1993 FORD MONDEO change

The cylinder head is provided with two oil
galleries, one on the inlet side and one on the
exhaust, to ensure constant oil supply to the
camshaft bearings and hydraulic tappets. A
retaining valve (inserted into the cylinder
head’s top surface, in the middle, on the inlet
side) prevents these galleries from being
drained when the engine is switched off. The
valve incorporates a ventilation hole in its
upper end, to allow air bubbles to escape
from the system when the engine is restarted.
While the crankshaft and camshaft
bearings and the hydraulic tappets receive a
pressurised supply, the camshaft lobes and
valves are lubricated by splash, as are all
other engine components.
Valve clearances - general
It is necessary for a clearance to exist
between the tip of each valve stem and the
valve operating mechanism, to allow for the
expansion of the various components as the
engine reaches normal operating
temperature.
On most older engine designs, this meant
that the valve clearances (also known as
“tappet” clearances) had to be checked and
adjusted regularly. If the clearances were
allowed to be too slack, the engine would be
very noisy, its power output would suffer, and
its fuel consumption would increase. If the
clearances were allowed to be too tight, the
engine’s power output would be reduced,
and the valves and their seats could be
severely damaged.
The engines covered in this manual,
however, employ hydraulic tappets which use
the lubricating system’s oil pressure
automatically to take up the clearance
between each camshaft lobe and its
respective valve stem. Therefore, there is no
need for regular checking and adjustment of
the valve clearances, but it is essential that
onlygood-quality oil of the recommended
viscosity and specification is used in the
engine, and that this oil is always changed at
the recommended intervals. If this advice is
not followed, the oilways and tappets may
become clogged with particles of dirt, or
deposits of burnt (inferior) engine oil, so that
the system cannot work properly; ultimately,
one or more of the tappets may fail, and
expensive repairs may be required.
On starting the engine from cold, there will
be a slight delay while full oil pressure builds
up in all parts of the engine, especially in the
tappets; the valve components, therefore,
may well “rattle” for about 10 seconds or so,
and then quieten. This is a normal state of
affairs, and is nothing to worry about,
provided that all tappets quieten quickly and
stay quiet.
After the vehicle has been standing for
several days, the valve components may
“rattle” for longer than usual, as nearly all the
oil will have drained away from the engine’s
top end components and bearing surfaces.
While this is only to be expected, care mustbe taken not to damage the engine under
these circumstances - avoid high speed
running until all the tappets are refilled with oil
and operating normally. With the vehicle
stationary, hold the engine at no more than a
fast idle speed (maximum 2000 to 2500 rpm)
for 10 to 15 seconds, or until the noise
ceases. Do not run the engine at more than
3000 rpm until the tappets are fully recharged
with oil and the noise has ceased.
If the valve components are thought to be
noisy, or if a light rattle persists from the top
end after the engine has warmed up to
normal operating temperature, take the
vehicle to a Ford dealer for expert advice.
Depending on the mileage covered and the
usage to which each vehicle has been put,
some vehicles may be noisier than others;
only a good mechanic experienced in these
engines can tell if the noise level is typical for
the vehicle’s mileage, or if a genuine fault
exists. If any tappet’s operation is faulty, it
must be renewed (Section 13).
The following major repair operations can
be accomplished without removing the
engine from the vehicle. However, owners
should note that any operation involving the
removal of the sump requires careful
forethought, depending on the level of skill
and the tools and facilities available; refer to
the relevant text for details.
(a) Compression pressure - testing.
(b) Cylinder head cover - removal and
refitting.
(c) Timing belt covers - removal and refitting.
(d) Timing belt - renewal.
(e) Timing belt tensioner and toothed pulleys
- removal and refitting.
(f) Camshaft oil seals - renewal.
(g) Camshafts and hydraulic tappets -
removal and refitting.
(h) Cylinder head - removal, overhaul and
refitting.
(i) Cylinder head and pistons -
decarbonising.
(j) Sump - removal and refitting.
(k) Crankshaft oil seals - renewal.
(l) Oil pump - removal and refitting.
(m) Piston/connecting rod assemblies -
removal and refitting (but see note below).
(n) Flywheel/driveplate - removal and
refitting.
(o) Engine/transmission mountings - removal
and refitting.
Clean the engine compartment and the
exterior of the engine with some type of
degreaser before any work is done. It will
make the job easier, and will help to keep dirt
out of the internal areas of the engine.
Depending on the components involved, it
may be helpful to remove the bonnet, to
improve access to the engine as repairs are
performed (refer to Chapter 11 if necessary).Cover the wings to prevent damage to the
paint; special covers are available, but an old
bedspread or blanket will also work.
If vacuum, exhaust, oil or coolant leaks
develop, indicating a need for component/
gasket or seal replacement, the repairs can
generally be made with the engine in the
vehicle. The intake and exhaust manifold
gaskets, sump gasket, crankshaft oil seals
and cylinder head gasket are all accessible
with the engine in place.
Exterior components such as the intake
and exhaust manifolds, the sump, the oil
pump, the water pump, the starter motor, the
alternator and the fuel system components
can be removed for repair with the engine in
place.
Since the cylinder head can be removed
without lifting out the engine, camshaft and
valve component servicing can also be
accomplished with the engine in the vehicle,
as can renewal of the timing belt and toothed
pulleys.
In extreme cases caused by a lack of
necessary equipment, repair or renewal of
piston rings, pistons, connecting rods and
big-end bearings is possible with the engine
in the vehicle. However, this practice is not
recommended, because of the cleaning and
preparation work that must be done to the
components involved, and because of the
amount of preliminary dismantling work
required - these operations are therefore
covered in Part B of this Chapter.
1When engine performance is down, or if
misfiring occurs which cannot be attributed to
the ignition or fuel systems, a compression
test can provide diagnostic clues as to the
engine’s condition. If the test is performed
regularly, it can give warning of trouble before
any other symptoms become apparent.
2The engine must be fully warmed-up to
normal operating temperature, the oil level
must be correct, the battery must be fully
charged, and the spark plugs must be
removed. The aid of an assistant will be
required also.
3Disable the ignition system by unplugging
the ignition coil’s electrical connector, and
remove fuse 14 to disconnect the fuel pump.
4Fit a compression tester to the No 1
cylinder spark plug hole - the type of tester
which screws into the plug thread is to be
preferred.
5Have the assistant hold the throttle wide
open and crank the engine on the starter
motor; after one or two revolutions, the
compression pressure should build up to a
maximum figure, and then stabilise. Record
the highest reading obtained.
6Repeat the test on the remaining cylinders,
recording the pressure developed in each.
7At the time of writing, no compression
3 Compression test -
description and interpretation
2 Repair operations possible with
the engine in the vehicle
In-car engine repair procedures 2A•5
2A
procarmanuals.com

contamination with oil or coolant. Renew the
belt if there is the slightest doubt about its
condition. As a safety measure, the belt must
be renewed as a matter of course at the
intervals given in Chapter 1; if its history is
unknown, the belt should be renewed
irrespective of its apparent condition
whenever the engine is overhauled. Similarly,
check the tensioner spring (where fitted),
renewing it if there is any doubt about its
condition. Check also the toothed pulleys for
signs of wear or damage, and ensure that the
tensioner and guide pulleys rotate smoothly
on their bearings; renew any worn or
damaged components. If signs of oil or
coolant contamination are found, trace the
source of the leak and rectify it, then wash
down the engine timing belt area and related
components, to remove all traces of oil or
coolant.
17On reassembly, temporarily refit the
crankshaft pulley, to check that the pulley
notches and sump rib are aligned as
described in paragraph 8 above, then ensure
that both camshafts are aligned at TDC by
the special tool (paragraph 10). If the engine
is being reassembled after major dismantling,
both camshaft toothed pulleys should be free
to rotate on their respective camshafts; if the
timing belt alone is being renewed, both
pulleys should still be securely fastened.
18A holding tool will be required to prevent
the camshaft toothed pulleys from rotating
while their bolts are slackened and
retightened; either obtain Ford service tool15-030A, or fabricate a substitute as follows.
Find two lengths of steel strip, one
approximately 600 mm long and the other
about 200 mm, and three bolts with nuts and
washers; one nut and bolt forming the pivot of
a forked tool, with the remaining nuts and
bolts at the tips of the “forks”, to engage with
the pulley spokes as shown in the
accompanying illustrations. Note:Do not use
the camshaft aligning tool (whether genuine
Ford or not) to prevent rotation while the
camshaft toothed pulley bolts are slackened
or tightened; the risk of damage to the
camshaft concerned and to the cylinder head
is far too great. Use only a forked holding tool
applied directly to the pulleys, as described.
19If it is being fitted for the first time, screw
the timing belt tensioner spring retaining pin
into the cylinder head, tightening it to the
specified torque wrench setting. Unbolt the
tensioner, hook the spring on to the pin and
the tensioner backplate, then refit the
tensioner, engaging its backplate on the
locating peg (see illustrations).
20In all cases, slacken the tensioner bolt (if
necessary), and use an Allen key inserted into
its centre to rotate the tensioner clockwise as
far as possible against spring tension, then
retighten the bolt to secure the tensioner (see
illustration).
21Fit the timing belt; if the original is being
refitted, ensure that the marks and notes
made on removal are followed, so that the
belt is refitted the same way round, and to run
in the same direction. Starting at thecrankshaft toothed pulley, work anti-
clockwise around the camshaft toothed
pulleys and tensioner, finishing off at the rear
guide pulley. The front run, between the
crankshaft and the exhaust camshaft toothed
pulleys, mustbe kept taut, without altering
the position either of the crankshaft or of the
camshaft(s) - if necessary, the position of the
camshaft toothed pulleys can be altered by
rotating each on its camshaft (which remains
fixed by the aligning tool). Where the pulley is
still fastened, use the holding tool described
in paragraph 18 above to prevent the pulley
from rotating while its retaining bolt is
slackened - the pulley can then be rotated on
the camshaft until the belt will slip into place;
retighten the pulley bolt.
22When the belt is in place, slacken the
tensioner bolt gently until the spring pulls the
tensioner against the belt; the tensioner
should be retained correctly against the
timing belt inner shield and cylinder head, but
must be just free to respond to changes in
belt tension (see illustration).
23Tighten both camshaft toothed pulley
bolts (or check that they are tight, as
applicable) and remove the camshaft aligning
tool. Temporarily refit the crankshaft pulley,
and rotate the crankshaft through two full
turns clockwise to settle and tension the
timing belt, returning the crankshaft (pulley
notches) to the position described in
paragraph 8 above. Refit the camshaft
aligning tool; it should slip into place as
described in paragraph 10. If all is well,
proceed to paragraph 26 below.
24If one camshaft is only just out of line, fit
the forked holding tool to its toothed pulley,
adjust its position as required, and check that
any slack created has been taken up by the
tensioner; rotate the crankshaft through two
further turns clockwise, and refit the camshaft
aligning tool to check that it now fits as it
should. If all is well, proceed to paragraph 26
below.
25If either camshaft is significantly out of
line, use the holding tool described in
paragraph 18 above to prevent its pulley from
rotating while its retaining bolt is slackened -
the camshaft can then be rotated (gently and
carefully, using an open-ended spanner) until
2A•12 In-car engine repair procedures
10.19A Fitting tensioner spring retaining
pin10.19B Hook spring onto tensioner and
refit as shown - engage tensioner
backplate on locating peg (arrowed) . . .10.20 . . . then use Allen key to position
tensioner so that timing belt can be refitted
10.22 Slacken tensioner bolt to give initial
belt tension10.25 Using forked holding tool while
camshaft toothed pulley bolt is tightened
procarmanuals.com

related components, to remove all traces of
oil. Fit a new belt on reassembly.
2If the timing belt is still clean, slip it off the
toothed pulley, taking care not to twist it too
sharply; use the fingers only to handle the
belt. Do notrotate the crankshaft until the
timing belt is refitted. Cover the belt, and
secure it so that it is clear of the working area
and cannot slip off the remaining toothed
pulley.
3Unfasten the pulley bolt and withdraw the
pulley (see Section 11).
4Unbolt the camshaft right-hand bearing
cap, and withdraw the defective oil seal.
Clean the seal housing, and polish off any
burrs or raised edges, which may have
caused the seal to fail in the first place.
5To fit a new seal, Ford recommend the use
of their service tool 21-009B, with a bolt
(10 mm thread size, 70 mm long) and a
washer, to draw the seal into place when the
camshaft bearing cap is bolted down; a
substitute can be made using a suitable
socket (see illustration). Grease the seal lips
and periphery to ease installation, and draw
the seal into place until it is flush with the
housing/bearing cap outer edge. Refit the
bearing cap, using sealant and tightening the
cap bolts as described in Section 13.
6For most owners, the simplest answer will
be to grease the seal lips, and to slide it on to
the camshaft (until it is flush with thehousing’s outer edge). Refit the bearing cap,
using sealant and tightening the cap bolts as
described in Section 13 (see illustration).
Take care to ensure that the seal remains
absolutely square in its housing, and is not
distorted as the cap is tightened down.
7Refit the pulley to the camshaft, tightening
the retaining bolt loosely, then slip the timing
belt back onto the pulley (refer to para-
graphs 18 and 21 of Section 10) and tighten
the bolt securely.
8The remainder of the reassembly
procedure, including checking the camshaft
alignment (valve timing) and setting the timing
belt tension, is as described in paragraphs 22
to 27 of Section 10.
Removal
1Release the tension from the timing belt as
described in Section 10, paragraphs 1 to 14.
2Either remove the timing belt completely
(Section 10, paragraphs 15 and 16) or slip it
off the camshaft toothed pulleys, taking care
not to twist it too sharply; use the fingers only
to handle the belt. Cover the belt, and secure
it so that it is clear of the working area. Do not
rotate the crankshaft until the timing belt is
refitted.3Unfasten the pulley bolts as described in
Section 10, paragraphs 18 and 21, and
withdraw the pulleys; while both are the same
and could be interchanged, it is good working
practice to mark them so that each is refitted
only to its original location (see illustration).
4Working in the sequence shown, slacken
progressively, by half a turn at a time, the
camshaft bearing cap bolts (see illustration).
Work only as described, to release gradually
and evenly the pressure of the valve springs
on the caps.
5Withdraw the caps, noting their markings
and the presence of the locating dowels, then
remove the camshafts and withdraw their oil
seals. The inlet camshaft can be identified by
the reference lobe for the camshaft position
sensor; therefore, there is no need to mark
the camshafts (see illustrations).
6Obtain sixteen small, clean containers, and
number them 1 to 16. Using a rubber sucker,
withdraw each hydraulic tappet in turn, invert
it to prevent oil loss, and place it in its
respective container, which should then be
filled with clean engine oil (see illustrations).
Do not interchange the hydraulic tappets, or
the rate of wear will be much increased. Do
not allow them to lose oil, or they will take a
long time to refill on restarting the engine,
resulting in incorrect valve clearances.
Inspection
7With the camshafts and hydraulic tappets
removed, check each for signs of obvious
13 Camshafts and hydraulic
tappets - removal,
inspection and refitting
2A•14 In-car engine repair procedures
12.5 Using socket and toothed pulley bolt
to install camshaft oil seal12.6 Alternatively, seal can be inserted
when camshaft bearing cap is unbolted13.3 Using forked holding tool while
camshaft toothed pulley bolt is slackened
13.4 Camshaft bearing cap slackening
sequence
Note:View from front of vehicle, showing
bearing cap numbers
13.5A Note locating dowels when
removing camshaft bearing caps13.5B Inlet camshaft has lobe for
camshaft position sensor
procarmanuals.com

additional lifting eyes where required (see
illustration). Remove completely the
engine/transmission front mounting, unscrew
the rear mounting’s centre bolt, and unbolt
the left-hand mounting from the body.
Unscrew the six nuts securing the right-hand
mounting bracket, and withdraw the bracket.
13Being careful to watch the wiring, coolant
hoses, fluid cooler pipes or gearchange
linkage and transmission support rods (where
appropriate), and the radiator electric cooling
fan, to ensure that nothing is trapped,
stretched or damaged, lift the
engine/transmission unit by 2 to 3 inches and
support it securely.
14Progressively unscrew the sump retaining
bolts. Break the joint by striking the sump
with the palm of the hand, then lower the
sump and withdraw it with the
engine/transmission lower adaptor plate; note
the presence of any shims between the sump
and transmission.
15Remove and discard the sump gasket;
this must be renewed as a matter of course
whenever it is disturbed.
16While the sump is removed, take the
opportunity to remove the oil pump pick-up/
strainer pipe and to clean it (see Section 16).
Refitting
17On reassembly, thoroughly clean and
degrease the mating surfaces of the cylinder
block/crankcase and sump, then use a cleanrag to wipe out the sump and the engine’s
interior. If the oil pump pick-up/strainer pipe
was removed, fit a new gasket and refit the
pipe, tightening its screws to the specified
torque wrench setting. Fit the new gasket to
the sump mating surface so that the gasket
fits into the sump groove (see illustration).
18If the sump is being refitted with the
engine/transmission still connected and in the
vehicle, proceed as follows:
(a) Check that the mating surfaces of the
sump, the cylinder block/crankcase and
the transmission are absolutely clean and
flat. Any shims found on removal of the
sump must be refitted in their original
locations.
(b) Apply a thin film of suitable sealant (Ford
recommend Hylosil 102) to the junctions
of the cylinder block/crankcase with the
oil pump and the crankshaft left-hand oil
seal carrier. Without delay - the sump
bolts must be fully tightened within 10 to
20 minutes of applying the sealant - offer
up the sump and engine/transmission
lower adaptor plate, and refit the bolts,
tightening them lightly at first (see
illustration).
(c) Ensuring that the engine/transmission
lower adaptor plate is correctly located,
firmly press the sump against the
transmission, and tighten the
transmission-to-sump (ie, engine) bolts to
the specified torque wrench setting.(d) Without disturbing the position of the
sump, and working in a diagonal
sequence from the centre outwards,
tighten the sump bolts to the specified
torque wrench setting.
(e) Proceed to paragraph 20.
19If the sump is being refitted with the
engine and transmission separated (in or out
of the vehicle), proceed as follows:
(a) Apply a thin film of suitable sealant (Ford
recommend Hylosil 102) to the junctions
of the cylinder block/crankcase with the
oil pump and the crankshaft left-hand oil
seal carrier (see illustration). Without
delay - the sump bolts must be fully
tightened within 10 to 20 minutes of
applying the sealant - offer up the sump
to the cylinder block/crankcase, and
insert the sump bolts, tightening them
lightly at first.
(b) Using a suitable straight edge to check
alignment across the flat-machined faces
of each, move the sump as necessary so
that its left-hand face - including any
shims found on removal - is flush with
that of the cylinder block/crankcase (see
illustration). Without disturbing the
position of the sump, and working in a
diagonal sequence from the centre
outwards, tighten the sump bolts to the
specified torque wrench setting.
(c) Check again that both faces are flush
before proceeding; if necessary, unbolt
the sump again, clean the mating
surfaces, and repeat the full procedure to
ensure that the sump is correctly aligned.
(d) If it is not possible to achieve exact
alignment by moving the sump, shims are
available in thicknesses of 0.25 mm
(colour-coded yellow) or 0.50 mm (colour-
coded black) to eliminate the discrepancy
(see illustration).
20The remainder of reassembly is the
reverse of the removal procedure, noting the
following points.
(a) Tighten all fasteners to the torque wrench
settings specified.
(b) Always renew any self-locking nuts
disturbed on removal.
(c) Lower the engine/transmission unit into
place, and reassemble the rear, left-hand
2A•20 In-car engine repair procedures
15.17 Ensure gasket is located correctly in
sump groove15.18 Engine/transmission lower adaptor
plate (arrowed) must be refitted with sump15.19A Apply sealant (arrowed) as
directed when refitting sump
15.19B Checking alignment of sump with
cylinder block/crankcase15.19C Sump-to-cylinder block/crankcase
alignment shims
1 Fitting points on sump 2 Shim
procarmanuals.com

How to use this Chapter
This Part of Chapter 2 is devoted to
engine/transmission removal and refitting, to
those repair procedures requiring the removal
of the engine/transmission from the vehicle,
and to the overhaul of engine components. It
includes only the Specifications relevant to
those procedures. Refer to Part A for
additional Specifications, if required.
General information
The information ranges from advice
concerning preparation for an overhaul and
the purchase of replacement parts, to detailed
step-by-step procedures covering removal
and installation of internal engine components
and the inspection of parts.
The following Sections have been written
based on the assumption that the engine has
been removed from the vehicle. For
information concerning in-vehicle engine
repair, as well as removal and installation of
the external components necessary for the
overhaul, see Part A of this Chapter and
Section 5 of this Part.
When overhauling this engine, it is essential
to establish first exactly what replacement
parts are available. At the time of writing,
components such as the piston rings are not
available separately from the
piston/connecting rod assemblies; pistons,
gudgeon pins and valve guides are not
available separately, and very few under- or
oversized components are available for
engine reconditioning. In most cases, it would
appear that the easiest and most
economically-sensible course of action is to
replace a worn or damaged engine with an
exchange unit.
It’s not always easy to determine when, or
if, an engine should be completely
overhauled, as a number of factors must be
considered.
High mileage is not necessarily an
indication that an overhaul is needed, while
low mileage doesn’t preclude the need for an
overhaul. Frequency of servicing is probably
the most important consideration. An engine
that’s had regular and frequent oil and filter
changes, as well as other required
maintenance, will most likely give many
thousands of miles of reliable service.
Conversely, a neglected engine may require
an overhaul very early in its life.
Excessive oil consumption is an indication
that piston rings, valve seals and/or valve
guides are in need of attention. Make surethat oil leaks aren’t responsible before
deciding that the rings and/or guides are
worn. Perform a cylinder compression check
(Part A of this Chapter, Section 3) to
determine the extent of the work required.
Loss of power, rough running, knocking or
metallic engine noises, excessive valve train
noise and high fuel consumption rates may
also point to the need for an overhaul,
especially if they’re all present at the same
time. If a full service doesn’t remedy the
situation, major mechanical work is the only
solution.
An engine overhaul involves restoring all
internal parts to the specification of a new
engine. Note:Always check first what
replacement parts are available before
planning any overhaul operation; refer to
Section 1 of this Part. Ford dealers, or a good
engine reconditioning specialist/automotive
parts supplier may be able to suggest
alternatives which will enable you to overcome
the lack of replacement parts.
During an overhaul, it is usual to renew the
piston rings, and to rebore and/or hone the
cylinder bores; where the rebore is done by an
automotive machine shop, new oversize
pistons and rings will also be installed - all
these operations, of course, assume the
availability of suitable replacement parts. The
main and big-end bearings are generally
renewed and, if necessary, the crankshaft
may be reground to restore the journals.
Generally, the valves are serviced as well,
since they’re usually in less-than-perfect
condition at this point. While the engine is
being overhauled, other components, such as
the starter and alternator, can be renewed as
well, or rebuilt, if the necessary parts can be
found. The end result should be an as-new
engine that will give many trouble-free miles.
Note:Critical cooling system components
such as the hoses, drivebelt, thermostat and
water pump MUST be replaced with new
parts when an engine is overhauled. The
radiator should be checked carefully, to
ensure that it isn’t clogged or leaking (see
Chapter 3). Also, as a general rule, the oil
pump should be renewed when an engine is
rebuilt.
Before beginning the engine overhaul, read
through the entire procedure to familiarise
yourself with the scope and requirements of
the job. Overhauling an engine isn’t difficult,
but it is time-consuming. Plan on the vehicle
being off the road for a minimum of two
weeks, especially if parts must be taken to an
automotive machine shop for repair or
reconditioning. Check on availability of parts,
and make sure that any necessary special
tools and equipment are obtained in advance.
Most work can be done with typical hand
tools, although a number of precision
measuring tools are required, for inspecting
parts to determine if they must be replaced.
Often, an automotive machine shop will
handle the inspection of parts, and will offer
advice concerning reconditioning andreplacement. Note:Always wait until the
engine has been completely dismantled, and
all components, especially the cylinder
block/crankcase, have been inspected, before
deciding what service and repair operations
must be performed by an automotive machine
shop. Since the block’s condition will be the
major factor to consider when determining
whether to overhaul the original engine or buy
a rebuilt one, never purchase parts or have
machine work done on other components
until the cylinder block/crankcase has been
thoroughly inspected.As a general rule, time
is the primary cost of an overhaul, so it
doesn’t pay to install worn or sub-standard
parts.
As a final note, to ensure maximum life and
minimum trouble from a rebuilt engine,
everything must be assembled with care, in a
spotlessly-clean environment.
If you’ve decided that an engine must be
removed for overhaul or major repair work,
several preliminary steps should be taken.
Locating a suitable place to work is
extremely important. Adequate work space,
along with storage space for the vehicle, will
be needed. If a workshop or garage isn’t
available, at the very least, a flat, level, clean
work surface made of concrete or asphalt is
required.
Cleaning the engine compartment and
engine/transmission before beginning the
removal procedure will help keep tools clean
and organized.
The engine can only be withdrawn by
removing it complete with the transmission;
the vehicle’s body must be raised and
supported securely, sufficiently high that the
engine/transmission can be unbolted as a
single unit and lowered to the ground; the
engine/transmission unit can then be
withdrawn from under the vehicle and
separated. An engine hoist or A-frame will
therefore be necessary. Make sure the
equipment is rated in excess of the combined
weight of the engine and transmission. Safety
is of primary importance, considering the
potential hazards involved in removing the
engine/transmission from the vehicle.
If this is the first time you have removed an
engine, a helper should ideally be available.
Advice and aid from someone more
experienced would also be helpful. There are
many instances when one person cannot
simultaneously perform all of the operations
required when removing the engine/
transmission from the vehicle.
Plan the operation ahead of time. Arrange for,
or obtain, all of the tools and equipment you’ll
need prior to beginning the job. Some of the
equipment necessary to perform
engine/transmission removal and installation
3 Engine/transmission removal -
methods and precautions
2 Engine overhaul -
general information
1 General information
Engine removal and general engine overhaul procedures 2B•3
2B
procarmanuals.com

inner wing panel, release the engine
wiring loom and refit the power steering
fluid reservoir.
(g) Secure the engine wiring loom neatly to
the engine/transmission so that it cannot
be damaged as the unit is removed from
the vehicle.
14Unbolt both parts of the exhaust manifold
heat shield; unclip the coolant hose to allow
the upper part to be withdrawn.
15Remove the auxiliary drivebelt (see
Chapter 1).
16Unbolt the power steering pump (see
Chapter 10); secure it as far as possible
(without disconnecting the system’s hoses)
clear of the engine/transmission.
17Raise the vehicle and support it securely
on axle stands, then remove the front
roadwheels. Drain the cooling system and (if
the engine is to be dismantled) drain the
engine oil and remove the oil filter (see
Chapter 1). Also drain the transmission as
described in the relevant Part of Chapter 7.
18Withdraw the lower part of the exhaust
manifold heat shield.
19Unscrew the nuts to disconnect the
exhaust system front downpipe from the
manifold, then unhook all the system’s rubber
mountings and withdraw the complete
exhaust system from under the vehicle (see
Chapter 4 for details).
20Where the vehicle is fitted with manual
transmission, mark their positions, then
disconnect the gearchange linkage and
transmission support rods from the rear of the
transmission. Unscrew the retaining nuts, and
withdraw the gear linkage heat shield from the
underbody. Unbolt the rear end of the linkage
from the underbody, swivel the linkage around
to the rear, and tie it to the underbody (see
Chapter 7, Part A, for details).
21Disconnect both anti-roll bar links from
their respective suspension strut - note the
flexible brake hose bracket attached to each
link stud - and both track rod ends from their
steering knuckles. Unfasten the clamp bolt
securing each front suspension lower arm
balljoint to its steering knuckle (see Chap-
ter 10 for details). Check that both balljoints
can be released from the knuckle assemblies
when required, but leave them in place for thetime being, secured by the clamp bolts if
necessary.
22Where the vehicle is fitted with air
conditioning, unbolt the accumulator/
dehydrator from the subframe; secure it as far
as possible (without disconnecting the
system’s hoses) clear of the engine/
transmission.
Warning: Do not disconnect the
refrigerant hoses.
23Unbolt the steering gear from the
subframe; if the bolts are not accessible from
above, a Ford service tool will be required to
reach them from underneath the vehicle (see
Chapter 10 for details).
24Unscrew the two bolts securing the power
steering system pipes to the right-hand side
of the subframe.
25Hold the radiator in its raised position, by
inserting split pins through the holes in the
rear of the engine compartment front
crossmember and into the radiator’s upper
mounting extensions. Unbolt the radiator
mounting brackets from the subframe; note
that they are handed, and are marked to
ensure correct refitting (see illustrations).
Collect and store the bottom mounting
rubbers for safekeeping, noting which way up
they are fitted.
26Unbolt the engine/transmission rear
mounting from the subframe - where the
vehicle is fitted with automatic transmission, a
separate damper may be fitted beneath the
subframe, which must be unbolted to reach
the mounting’s fasteners. Where the vehicle is
fitted with manual transmission, also unscrew
the mounting centre bolt, and unbolt the
mounting bracket from the transmission.
27Unscrew the engine/transmission front
mounting centre bolt, and unbolt the
mounting from the subframe, noting the
location of the wiring connector bracket.
28Use white paint or similar (do not use a
sharp-pointed scriber, which might break the
underbody protective coating and cause
rusting) to mark the exact relationship of the
subframe to the underbody. Unscrew the four
mounting bolts from the subframe (note their
different-sized washers - see also illus-tration 4.47A) and allow the subframe to hang
down on the suspension lower arm balljoints.
Disconnect the balljoints one at a time from
the steering knuckle assemblies (see Chap-
ter 10) and lower the subframe to the ground;
withdraw the subframe from under the
vehicle.
29Marking or labelling all components as
they are disconnected (see paragraph 5
above) and catching as much as possible of
the escaping coolant in the drain tray,
disconnect the cooling system hoses and
pipes as follows - refer to Chapter 3 for further
details, if required:
(a) Remove the radiator top hose.
(b) Remove the (heater) hose running from
the thermostat to the engine
compartment bulkhead union.
(c) Disconnect from the thermostat the hose
running to the expansion tank - secure the
hose clear of the working area.
(d) Disconnect from the thermostat the
coolant hose/pipe which runs to the
radiator bottom hose.
(e) Disconnect the radiator bottom hose from
the radiator union, from the (sump) heater
coolant pipe and from the water pump
union - secure the hose clear of the
working area.
(f) Unbolt the (heater) coolant pipe from the
sump, trace the pipe/hose round to the
engine compartment bulkhead union,
disconnecting (where fitted) the oil cooler
hoses from the cooler unions, then
remove it.
(g) Unless the vehicle has air conditioning
fitted, secure the radiator as far forwards
as possible while it is in its raised position;
if air conditioning is fitted, remove the
radiator completely (see Chapter 3).
30Where the vehicle is fitted with air
conditioning, unplug the compressor’s
electrical connector, and unbolt the
compressor from the engine (see
illustration). Secure it as far as possible
(without disconnecting the system’s hoses)
clear of the engine/transmission.
Warning: Do not disconnect the
refrigerant hoses.
2B•6 Engine removal and general engine overhaul procedures
4.25A Use split pins as shown to secure
radiator in its raised position . . .
4.25B . . . while you unbolt the bottom
mountings (arrowed) - note that the
mountings are handed, and do not lose the
mounting rubbers
4.30 Unscrew bolts (arrowed) to release
air conditioning compressor from engine
procarmanuals.com

gear linkage heat shield. Reconnect the
gearchange linkage and transmission support
rods to the transmission, adjusting the linkage
using the marks made on removal (see
Chapter 7, Part A, for details).
56Re-install the remaining components and
fasteners in the reverse order of removal.
57Add coolant, engine oil and transmission
fluids as needed (see Chapter 1).
58Run the engine, and check for proper
operation and the absence of leaks. Shut off
the engine, and recheck the fluid levels.
59Remember that, since the front suspension
subframe and steering gear have been
disturbed, the wheel alignment and steering
angles must be checked fully and carefully as
soon as possible, with any necessary
adjustments being made. This operation is best
carried out by an experienced mechanic, using
proper checking equipment; the vehicle should
therefore be taken to a Ford dealer or similarly-
qualified person for attention.
1It is much easier to dismantle and work on
the engine if it is mounted on a portable engine
stand. These stands can often be hired from a
tool hire shop. Before the engine is mounted
on a stand, the flywheel/driveplate should be
removed (Part A of this Chapter, Section 21)
so that the stand bolts can be tightened into
the end of the cylinder block/crankcase.
2If a stand is not available, it is possible to
dismantle the engine with it mounted on
blocks, on a sturdy workbench or on the floor.
Be extra-careful not to tip or drop the engine
when working without a stand.
3If you are going to obtain a reconditioned
engine, all external components must be
removed first, to be transferred to the
replacement engine (just as they will if you are
doing a complete engine overhaul yourself).
Note:When removing the external
components from the engine, pay close
attention to details that may be helpful or
important during refitting. Note the fitted
position of gaskets, seals, spacers, pins,
washers, bolts and other small items.These
external components include the following:
(a) Alternator and brackets (Chapter 5).
(b) HT leads and spark plugs (Chapter 1).
(c) Thermostat and housing (Chapter 3).
(d) Dipstick tube.
(e) Fuel injection system components
(Chapter 4).
(f) All electrical switches and sensors - refer
to the appropriate Chapter.
(g) Inlet and exhaust manifolds (Part A of this
Chapter).
(h) Oil filter (Chapter 1).
(i) Engine/transmission mounting brackets
(Part A of this Chapter, Section 22).
(j) Flywheel/driveplate (Part A of this
Chapter, Section 21).
4If you are obtaining a “short” engine (whichconsists of the engine cylinder
block/crankcase, crankshaft, pistons and
connecting rods all assembled), then the
cylinder head, sump, oil pump, and timing belt
will have to be removed also.
5If you are planning a complete overhaul, the
engine can be dismantled and the internal
components removed in the following order.
(a) Inlet and exhaust manifolds (Part A of this
Chapter).
(b) Timing belt, toothed pulleys and
tensioner, and timing belt inner cover
(Part A of this Chapter).
(c) Cylinder head (Part A of this Chapter,
Section 14).
(d) Flywheel/driveplate (Part A of this
Chapter, Section 21).
(e) Sump (Part A of this Chapter, Section 15).
(f) Oil pump (Part A of this Chapter, Sec-
tion 16).
(g) Piston/connecting rod assemblies
(Section 9).
(h) Crankshaft (Section 10).
6Before beginning the dismantling andoverhaul procedures, make sure that you have
all of the correct tools necessary. Refer to the
introductory pages at the beginning of this
manual for further information.
Note:New and reconditioned cylinder heads
are available from the manufacturers, and
from engine overhaul specialists. Due to the
fact that some specialist tools are required for
the dismantling and inspection procedures,
and new components may not be readily
available (refer to Section 1 of this Part), it may
be more practical and economical for the
home mechanic to purchase a reconditioned
head, rather than to dismantle, inspect and
recondition the original head.
1Remove the camshafts and hydraulic
tappets (Part A of this Chapter, Section 13),
being careful to store the hydraulic tappets as
described (see illustration).
6 Cylinder head - dismantling
5 Engine overhaul-
dismantling sequence
Engine removal and general engine overhaul procedures 2B•9
2B
6.1 Cylinder head components
1 Hydraulic tappet
2 Valve collets
3 Valve spring upper seat
4 Valve spring5 Valve spring lower
seat/stem oil seal
6 Oil-retaining valve
7 Engine lifting eye
8 Cylinder head gasket9 Inlet valve
10 Locating dowels
11 Exhaust valve
12 Cylinder head bolt
procarmanuals.com

Note:Always check first what replacement
parts are available before planning any
overhaul operation; refer to Section 1 of this
Part. A Ford dealer, or a good engine
reconditioning specialist/automotive parts
supplier, may be able to suggest alternatives
which will enable you to overcome the lack of
replacement parts.
1Clean the crankshaft, and dry it with
compressed air if available.
Warning: Wear eye protection
when using compressed air! Be
sure to clean the oil holes with a
pipe cleaner or similar probe.
2Check the main and crankpin (big-end)
bearing journals for uneven wear, scoring,
pitting and cracking.
3Rub a penny across each journal several
times (see illustration). If a journal picks up
copper from the penny, it is too rough.
4Remove all burrs from the crankshaft oil
holes with a stone, file or scraper.
5Using a micrometer, measure the diameter
of the main bearing and crankpin (big-end)
journals, and compare the results with the
Specifications at the beginning of this Chapter
(see illustration).
6By measuring the diameter at a number of
points around each journal’s circumference,
you will be able to determine whether or not
the journal is out-of-round. Take the
measurement at each end of the journal, near
the webs, to determine if the journal is
tapered.
7If the crankshaft journals are damaged,
tapered, out-of-round, or worn beyond the
limits specified in this Chapter, the crankshaft
must be taken to an engine overhaul
specialist, who will regrind it, and who can
supply the necessary undersize bearing
shells.
8Check the oil seal journals at each end of
the crankshaft for wear and damage. If either
seal has worn an excessive groove in itsjournal, consult an engine overhaul specialist,
who will be able to advise whether a repair is
possible, or whether a new crankshaft is
necessary.
Note:Always check first what replacement
parts are available before planning any
overhaul operation; refer to Section 1 of this
Part. A Ford dealer, or a good engine
reconditioning specialist/automotive parts
supplier, may be able to suggest alternatives
which will enable you to overcome the lack of
replacement parts.
1Even though the main and big-end bearing
shells should be renewed during the engine
overhaul, the old shells should be retained for
close examination, as they may reveal
valuable information about the condition of
the engine (see illustration).
2Bearing failure occurs because of lack of
lubrication, the presence of dirt or other
foreign particles, overloading the engine, and
corrosion. Regardless of the cause of bearing
failure, it must be corrected before the engine
is reassembled, to prevent it from happening
again.
3When examining the bearing shells, remove
them from the cylinder block/crankcase and
main bearing caps, and from the connecting
rods and the big-end bearing caps, then lay
them out on a clean surface in the same
general position as their location in the
engine. This will enable you to match any
bearing problems with the corresponding
crankshaft journal. Do nottouch any shell’s
bearing surface with your fingers while
checking it, or the delicate surface may be
scratched.
4Dirt or other foreign matter gets into the
engine in a variety of ways. It may be left in
the engine during assembly, or it may pass
through filters or the crankcase ventilation
system. It may get into the oil, and from there
into the bearings. Metal chips from machining
operations and normal engine wear are often
present. Abrasives are sometimes left in
engine components after reconditioning,especially when parts are not thoroughly
cleaned using the proper cleaning methods.
Whatever the source, these foreign objects
often end up embedded in the soft bearing
material, and are easily recognized. Large
particles will not embed in the material, and
will score or gouge the shell and journal. The
best prevention for this cause of bearing
failure is to clean all parts thoroughly, and to
keep everything spotlessly-clean during
engine assembly. Frequent and regular engine
oil and filter changes are also recommended.
5Lack of lubrication (or lubrication
breakdown) has a number of inter-related
causes. Excessive heat (which thins the oil),
overloading (which squeezes the oil from the
bearing face) and oil leakage (from excessive
bearing clearances, worn oil pump or high
engine speeds) all contribute to lubrication
breakdown. Blocked oil passages, which
usually are the result of misaligned oil holes in
a bearing shell, will also starve a bearing of oil,
and destroy it. When lack of lubrication is the
cause of bearing failure, the bearing material
is wiped or extruded from the shell’s steel
backing. Temperatures may increase to the
point where the steel backing turns blue from
overheating.
6Driving habits can have a definite effect on
bearing life. Full-throttle, low-speed operation
(labouring the engine) puts very high loads on
bearings, which tends to squeeze out the oil
film. These loads cause the shells to flex,
which produces fine cracks in the bearing
face (fatigue failure). Eventually, the bearing
material will loosen in pieces, and tear away
from the steel backing. Short-distance driving
leads to corrosion of bearings, because
insufficient engine heat is produced to drive
off condensed water and corrosive gases.
These products collect in the engine oil,
forming acid and sludge. As the oil is carried
14 Main and big-end bearings-
inspection
13 Crankshaft - inspection
2B•18 Engine removal and general engine overhaul procedures
13.3 Rubbing a penny lengthwise along
each journal will reveal its condition - if
copper rubs off and is embedded in the
crankshaft, the journals should be
reground13.5 Measure the diameter of each
crankshaft journal at several points, to
detect taper and out-of-round conditions
14.1 When inspecting the main and big-
end bearings, look for these problems
procarmanuals.com