1993 FORD MONDEO bonnet

are correctly secured, and that the radiator
drain plug is securely tightened. Refit the
radiator undershield, noting that it is located
by three clips at its front edge; tighten the
retaining screws securely (see illustration). If
it was raised, lower the vehicle to the ground.
12Prepare a sufficient quantity of the
specified coolant mixture (see below); allow
for a surplus, so as to have a reserve supply
for topping-up.
13Slowly fill the system through the
expansion tank; since the tank is the highest
point in the system, all the air in the system
should be displaced into the tank by the rising
liquid. Slow pouring reduces the possibility of
air being trapped and forming air-locks.
14Continue filling until the coolant level
reaches the expansion tank “MAX” level line,
then cover the filler opening to prevent
coolant splashing out.
15Start the engine and run it at idle speed,
until it has warmed-up to normal operating
temperature and the radiator electric cooling
fan has cut in; watch the temperature gauge
to check for signs of overheating. If the level in
the expansion tank drops significantly, top-up
to the “MAX” level line, to minimise the
amount of air circulating in the system.
16Stop the engine, allow it to cool down
completely(overnight, if possible), then
uncover the expansion tank filler opening and
top-up the tank to the “MAX” level line. Refit
the filler cap, tightening it securely, and washoff any spilt coolant from the engine
compartment and bodywork.
17After refilling, always check carefully all
components of the system (but especially any
unions disturbed during draining and flushing)
for signs of coolant leaks. Fresh antifreeze has
a searching action, which will rapidly expose
any weak points in the system.
18 Note:If, after draining and refilling the
system, symptoms of overheating are found
which did not occur previously, then the fault
is almost certainly due to trapped air at some
point in the system, causing an air-lock and
restricting the flow of coolant; usually, the air
is trapped because the system was refilled too
quickly. In some cases, air-locks can be
released by tapping or squeezing the various
hoses. If the problem persists, stop the engine
and allow it to cool down completely, before
unscrewing the expansion tank filler cap or
disconnecting hoses to bleed out the trapped
air.
Antifreeze mixture
19If the antifreeze used is not to Ford’s
specification, it should always be renewed at
the suggested intervals. This is necessary not
only to maintain the antifreeze properties, but
also to prevent the corrosion which would
otherwise occur as the corrosion inhibitors
become progressively less effective. Always
use an ethylene glycol-based antifreeze which
is suitable for use in mixed-metal cooling
systems.
20If the antifreeze used is to Ford’s
specification, the levels of protection it affords
are indicated in the Specifications Section of
this Chapter. To give the recommended
standardmixture ratio for this antifreeze, 40%
(by volume) of antifreeze must be mixed with
60% of clean, soft water; if you are using any
other type of antifreeze, follow its
manufacturer’s instructions to achieve the
correct ratio. It is best to make up slightly
more than the system’s specified capacity, so
that a supply is available for subsequent
topping-up.
21Before adding antifreeze, the cooling
system should be completely drained,
preferably flushed, and all hoses checked forcondition and security. As noted earlier, fresh
antifreeze will rapidly find any weaknesses in
the system.
22After filling with antifreeze, a label should
be attached to the expansion tank, stating the
type and concentration of antifreeze used,
and the date installed. Any subsequent
topping-up should be made with the same
type and concentration of antifreeze. If
topping-up using antifreeze to Ford’s
specification, note that a 50/50 mixture is
permissible, purely for convenience.
23Do not use engine antifreeze in the
windscreen/tailgate washer system, as it will
damage the vehicle’s paintwork. A screen
wash additive should be added to the washer
system in its maker’s recommended
quantities.
General cooling system checks
24The engine should be cold for the cooling
system checks, so perform the following
procedure before driving the vehicle, or after it
has been shut off for at least three hours.
25Remove the expansion tank filler cap (see
Section 3), and clean it thoroughly inside and
out with a rag. Also clean the filler neck on the
expansion tank. The presence of rust or
corrosion in the filler neck indicates that the
coolant should be changed. The coolant
inside the expansion tank should be relatively
clean and transparent. If it is rust- coloured,
drain and flush the system, and refill with a
fresh coolant mixture.
26Carefully check the radiator hoses and
heater hoses along their entire length; renew
any hose which is cracked, swollen or
deteriorated (see Section 12).
27Inspect all other cooling system
components (joint faces, etc.) for leaks. A leak
in the cooling system will usually show up as
white- or rust-coloured deposits on the area
adjoining the leak. Where any problems of this
nature are found on system components,
renew the component or gasket with
reference to Chapter 3.
28Clean the front of the radiator with a soft
brush to remove all insects, leaves, etc,
embedded in the radiator fins. Be careful not
to damage the radiator fins, or cut your fingers
on them.
1•22
28.11 Ensure radiator undershield is
located securely in three clips at front
edge (arrowed) when refitting
Every 30 000 miles
Every 30 000 miles or 3 years
1The air filter element is located in the air
cleaner assembly on the left-hand side of the
engine compartment. Release the clips, and
lift the air cleaner cover (see illustrations). If
the additional working clearance is required,
unclip the cover from the air mass meter, and
withdraw it completely.
2Lift out the element, and wipe out thehousing (see illustration). Check that no
foreign matter is visible, either in the air intake
or in the air mass meter.
3If carrying out a routine service, the element
must be renewed regardless of its apparent
condition; note that the small foam filter in the
rear right-hand corner of the air cleaner
housing must be cleaned whenever the air
filter element is renewed (see Section 30).
4If you are checking the element for any
other reason, inspect its lower surface; if it is
oily or very dirty, renew the element. If it is
only moderately dusty, it can be re-used byblowing it clean from the upper to the lower
surface with compressed air. Because it is a
pleated-paper type filter, it cannot be washed
or re-oiled. If it cannot be cleaned
satisfactorily with compressed air, discard
and renew it.
Warning: Wear eye protection
when using compressed air!
Caution: Never drive the vehicle
with the air cleaner filter element
removed. Excessive engine wear could
result, and backfiring could even cause a
fire under the bonnet.
29 Air filter element renewal
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5Refitting is the reverse of the removal
procedure. Ensure that the element and cover
are securely seated, so that unfiltered air
cannot enter the engine.
1The Positive Crankcase Ventilation (PCV)
system components are located at the front of
the engine, underneath the exhaust manifold
and air intake resonator. Refer to Chapter 6
for further information.
2Check that all components of the system
are securely fastened, correctly routed (with
no kinks or sharp bends to restrict flow) and in
sound condition; renew any worn or damaged
components.
3If oil leakage is noted, disconnect the
various hoses and pipes, and check that all
are clear and unblocked. Remove the air
cleaner assembly cover, air mass meter and
resonator, then check that the hose from the
cylinder head cover to the air cleaner housing
is clear and undamaged. Disconnect the
rubber T-piece both from the union on the
inlet manifold left-hand end, and from the
metal crankcase breather pipe under the
ignition coil. Connect a spare, clean, length of
hose to the breather pipe. Suck on the end of
the hose, then blow through it - little or norestriction to airflow should be felt in either
direction. A similar test can be applied to
check that the inlet manifold passages are
clear - air should be heard hissing out of the
plenum chamber mouth as you blow.
4The PCV valve is designed to allow gases
to flow out of the crankcase only, so that a
depression is created in the crankcase under
most operating conditions, particularly at idle.
Therefore, if either the oil separator or the PCV
valve are thought to be blocked, they must be
renewed (see Chapter 6). In such a case,
however, there is nothing to be lost by
attempting to flush out the blockage using a
suitable solvent. The PCV valve should rattle
when shaken.
5While the air filter element is removed (see
Section 29), wipe out the housing, and
withdraw the small foam filter from its location
in the rear right-hand corner of the housing
(see illustration). If the foam is badly clogged
with dirt or oil, it must be cleaned by soaking it
in a suitable solvent, and allowed to dry
before being refitted.
Spark plug check and renewal
1It is vital for the correct running, full
performance and proper economy of the
engine that the spark plugs perform with
maximum efficiency. The most important
factor in ensuring this is that the plugs fitted
are appropriate for the engine. The suitable
type is given in the Specifications Section at
the beginning of this Chapter, on the Vehicle
Emissions Control Information (VECI) label
located on the underside of the bonnet (only
on models sold in some areas) or in the
vehicle’s Owner’s Handbook. If these sources
specify different plugs, purchase the spark
plug type specified on the VECI label (where
appropriate), as that information is provided
specifically for your engine. If this type is used
and the engine is in good condition, the spark
plugs should not need attention between
scheduled renewal intervals. Spark plug
cleaning is rarely necessary, and should notbe attempted unless specialised equipment is
available, as damage can easily be caused to
the firing ends.
2Spark plug removal and refitting requires a
spark plug socket, with an extension which
can be turned by a ratchet handle or similar.
This socket is lined with a rubber sleeve, to
protect the porcelain insulator of the spark
plug, and to hold the plug while you insert it
into the spark plug hole. You will also need a
wire-type feeler gauge, to check and adjust
the spark plug electrode gap, and a torque
wrench to tighten the new plugs to the
specified torque (see illustration).
3To remove the spark plugs, first open the
bonnet; the plugs are easily reached at the
top of the engine. Note how the spark plug
(HT) leads are routed and secured by clips
along the channel in the cylinder head cover.
31 Spark plug renewal
30 Positive Crankcase
Ventilation (PCV) system
check and filter cleaning
1•23
1
30.5 The Positive Crankcase Ventilation
(PCV) system filter in the air cleaner
assembly must be cleaned whenever the
air filter element is renewed
31.2 Tools required for changing spark
plugs
1Spark plug socket- This will have special
padding inside, to protect the spark plug
porcelain insulator
2Torque wrench- Although not essential,
use of this tool is the best way to ensure that
the plugs are tightened properly
3Ratchet- Standard hand tool to fit the
plug socket
4Extension- Depending on the other tools
available, you may need an extension to reach
the plugs
5Spark plug gap gauge- This gauge for
checking the gap comes in a variety of styles.
Make sure the gap for your engine is included
29.1A Release the wire clips to detach the
cover from the air cleaner assembly . . .29.1B . . . noting the long clip normally
hidden by the battery . . .29.2 . . . lift the element out of the housing,
and wipe out its interior before fitting the
new element
Every 30 000 miles
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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
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1With the vehicle parked on firm level
ground, open the bonnet and disconnect the
battery negative (earth) lead - see Chapter 5,
Section 1 (see illustration).
2Unbolt the power steering high-pressure
pipe from the cylinder head rear support
plate/engine lifting eye, and from the front
support plate/pump bracket.
3Unscrew the six nuts securing the
engine/transmission right-hand mounting
bracket, then withdraw the bracket.
4Slacken the water pump pulley bolts.5Remove the cylinder head cover (see
Section 5).
6Remove the spark plugs, covering their
holes with clean rag, to prevent dirt or other
foreign bodies from dropping in (see Chap-
ter 1).
7Remove the auxiliary drivebelt (see Chap-
ter 1).
8Rotate the crankshaft clockwise until the
second pair of notches in the pulley rim align
with the edge of the sump mark, so that Nos
1 and 4 cylinders are at TDC (see Section 4).9Unbolt and remove the water pump pulley
and the auxiliary drivebelt idler pulley.
10Obtain Ford service tool 21-162, or
fabricate a substitute from a strip of metal
5 mm thick (while the strip’s thickness is
critical, its length and width are not, but
should be approximately 180 to 230 mm by
20 to 30 mm). Check that Nos 1 and 4
cylinders are at Top Dead Centre (TDC) - No 1
on the compression stroke - by resting this
tool on the cylinder head mating surface, and
sliding it into the slot in the left-hand end of
both camshafts (see illustration). The tool
should slip snugly into both slots while resting
on the cylinder head mating surface; if one
camshaft is only slightly out of alignment, it is
permissible to use an open-ended spanner to
rotate the camshaft gently and carefully until
the tool will fit.
11If both camshaft slots (they are machined
significantly off-centre) are below the level of
the cylinder head mating surface, rotate the
crankshaft through one full turn clockwise
and fit the tool again; it should now fit as
described in the previous paragraph.
12With the camshaft aligning tool remaining
in place, remove the crankshaft pulley. Do not
use the locked camshafts to prevent the
crankshaft from rotating - use only the locking
methods described in Section 8.
13Remove the timing belt lower and middle
covers (see Section 9).
14With the camshaft aligning tool still in
place, slacken the tensioner bolt, and use an
Allen key inserted into its centre to rotate the
tensioner clockwise as far as possible away
from the belt; retighten the bolt to secure the
tensioner clear of the timing belt (see
illustration).
15If the timing belt is to be re-used, use
white paint or similar to mark its direction of
rotation, and note from the manufacturer’s
markings which way round it is fitted.
Withdraw the belt (see illustration). Do not
rotate the crankshaft until the timing belt is
refitted.
16If the belt is being removed for reasons
other than routine renewal, check it carefully
for any signs of uneven wear, splitting, cracks
(especially at the roots of the belt teeth) or
In-car engine repair procedures 2A•11
2A
10.10 Fit camshaft aligning tool to ensure
engine is locked with Nos 1 and 4 cylinders
at TDC10.14 Slacken tensioner bolt, and use
Allen key to rotate tensioner away from
timing belt . . .10.15 . . . then withdraw timing belt
10.1 Timing belt and cover details
1 Timing belt upper cover
2 Inlet camshaft toothed pulley
3 Exhaust camshaft toothed pulley
4 Timing belt
5 Timing belt tensioner
6 Crankshaft toothed pulley
7 Timing belt middle cover
8 Timing belt lower cover
9 Crankshaft pulley
10 Water pump pulley
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23If using Ford’s recommended procedure,
fit new oil seals to the camshafts as
described in paragraph 5 of Section 12.
24Using the marks and notes made on
dismantling to ensure that each is refitted to
its original camshaft, refit the toothed pulleys
to the camshafts, tightening the retaining
bolts loosely (see illustration). Slip the timing
belt back onto the pulleys (refer to para-
graph 21 of Section 10) and tighten the bolts
securely - use the forked holding tool
described in paragraph 18 of Section 10.
25The remainder of the reassembly
procedure, including checking the camshaft
alignment (valve timing) and setting the timing
belt tension, is as described in paragraphs 17
to 27 of Section 10.
Removal
Note:The following text assumes that the
cylinder head will be removed with both inlet
and exhaust manifolds attached; this
simplifies the procedure, but makes it a bulky
and heavy assembly to handle - an engine
hoist will be required, to prevent the risk of
injury, and to prevent damage to any delicate
components as the assembly is removed and
refitted. If it is wished first to remove the
manifolds, proceed as described in Sections
6 and 7 of this Chapter; amend the following
procedure accordingly.1Relieve the fuel system pressure (see
Chapter 4).
2With the vehicle parked on firm level
ground, open the bonnet and disconnect the
battery negative (earth) lead - see Chapter 5,
Section 1.
3Whenever you disconnect any vacuum
lines, coolant and emissions hoses, wiring
loom connectors, earth straps and fuel lines
as part of the following procedure, always
label them clearly, so that they can be
correctly reassembled.
4Unplugging the two electrical connectors,
disconnecting the vacuum hose (where fitted)
and disconnecting the crankcase breather
hose from the cylinder head cover, remove
the complete air cleaner assembly with the air
mass meter, the resonator and the plenum
chamber (see Chapter 4).
5Equalise the pressure in the fuel tank by
removing the filler cap, then undo the fuel
feed and return lines connecting the engine to
the chassis (see Chapter 4). Plug or cap all
open fittings.
6Disconnect the accelerator cable from the
throttle linkage as described in Chapter 4 -where fitted, disconnect also the cruise control
actuator cable (see Chapter 12). Secure the
cable(s) clear of the engine/transmission.
7Unbolt the power steering high-pressure
pipe from the cylinder head rear support
plate/engine lifting eye, and from the front
support plate/pump bracket. Releasing its
wire clip, unplug the power steering pressure
switch electrical connector, then unbolt the
earth lead from the cylinder head rear support
plate/engine lifting eye.
8Remove the three screws securing the
wiring “rail” to the rear of the manifold.
Releasing its wire clip, unplug the large
electrical connector (next to the fuel pressure
regulator) to disconnect the engine wiring from
the main loom (see illustration). Unplug the
electrical connectors on each side of the
ignition coil, and the single connector from
beneath the front of the thermostat housing, to
disconnect the coil and coolant temperature
gauge sender wiring (see illustration).
9Marking or labelling them as they are
unplugged, disconnect the vacuum hoses as
follows:
(a) One from the rear of the throttle housing
(only the one hose - there is no need to
disconnect the second hose running to
the fuel pressure regulator).
(b) One from the union on the inlet manifold’s
left-hand end (see illustration).
(c) The braking system vacuum servo unit
hose (see Chapter 9 for details).
(d) Disconnect all vacuum hoses from the
Exhaust Gas Recirculation system
components - one from the EGR valve
and two from the EGR pipe. (Note that
these last two are of different sizes, as are
their pipe stubs, so that they can only be
connected the correct way round.)
10Unbolt both parts of the exhaust manifold
heat shield; unclip the coolant hose to allow the
upper part to be withdrawn. Either remove the
dipstick and tube, or swing them out of the way.
11Unscrew the single bolt securing the
pulse-air filter housing to the engine/
transmission front mounting bracket, then
disconnect its vacuum hose.
12Drain the cooling system (see Chapter 1).
13Disconnect all coolant hoses from the
thermostat housing (see illustration).
14 Cylinder head -
removal and refitting
In-car engine repair procedures 2A•17
2A
14.9 Disconnect vacuum hoses (arrowed)
as described in text14.13 Disconnect all coolant hoses
(arrowed) from thermostat housing
13.24 . . . while camshaft toothed pulleys
are refitted14.8A Release wire clip to unplug engine
wiring loom connector from inlet manifold14.8B Unplug connectors (arrowed) to
disconnect ignition coil wiring
Masking tape and/or a touch-
up paint applicator work
well for marking items.
Take instant photos, or
sketch the locations of components
and brackets.
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then an ordinary socket extension bar and an
angle gauge, to tighten the cylinder head
bolts in the stages given in the Specifications
Section of this Chapter (see illustrations).
Note:Once tightened correctly, following this
procedure, the cylinder head bolts do not
require check-tightening, and must notbe re-
torqued.
33Refit the hydraulic tappets (if removed),
the camshafts, their oil seals and pulleys (see
Sections 10, 11, 12 and 13, as appropriate).
Temporarily refit the crankshaft pulley, and
rotate the crankshaft clockwise to return the
pulley notches to the position described in
paragraph 8 of Section 10.
34Refit the timing belt and covers, checking
the camshaft alignment (valve timing) and
setting the timing belt tension, as described in
Section 10.
35The 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) When reassembling the
engine/transmission right-hand mounting,
renew the self-locking nuts, and do not
allow the mounting to twist as the middle
two of the bracket’s six nuts are
tightened.
(c) Refill the cooling system, and top-up the
engine oil.
(d) Check all disturbed joints for signs of oil
or coolant leakage, once the engine has
been restarted and warmed-up to normal
operating temperature.
Removal
Note:To carry out this task with the
engine/transmission installed in the vehicle
requires the assistance of at least one person,
plus the equipment necessary to raise and
support the front of the vehicle (high enough
that the sump can be withdrawn from
underneath), and to lift and support the
complete engine/transmission unit 2 to 3 inches from its mountings while the vehicle
is raised. Precise details of the procedure will
depend on the equipment available - the
following is typical.
The full procedure outlined below must be
followed, so that the mating surfaces can be
cleaned and prepared to achieve an oil-tight
joint on reassembly, and so that the sump
can be aligned correctly; depending on your
skill and experience, and the tools and
facilities available, it may be that this task can
be carried out only with the engine removed
from the vehicle.
Note that the sump gasket must be
renewed whenever it is disturbed.
1With the vehicle parked on firm level
ground, open the bonnet and disconnect the
battery negative (earth) lead - see Chapter 5,
Section 1.
2Drain the engine oil, then clean and refit the
engine oil drain plug, tightening it to the
specified torque wrench setting. Although not
strictly necessary as part of the dismantling
procedure, owners are advised to remove
and discard the oil filter, so that it can be
renewed with the oil (see Chapter 1).
3Drain the cooling system (see Chapter 1).
4Disconnect the radiator bottom hose from
the radiator union and from the (heater)
coolant pipe. Unbolt the coolant pipe from
the sump; if they will prevent sump removal,
disconnect or release the coolant hoses from
the oil cooler unions (where fitted).
5Unscrew the two bolts securing the powersteering system pipes to the right-hand side
of the subframe.
6Unplug the electrical connector(s) to
disconnect the oxygen sensor and, where
fitted, the oil level sensor wiring - unclip the
connectors to release the wiring where
necessary.
7Where the vehicle is fitted with automatic
transmission, trace the fluid cooler lines from
the transmission to the radiator, and release
them from any clips etc, so that they have as
much movement as possible.
8Remove the auxiliary drivebelt cover (see
Chapter 1).
9Unscrew the nuts to disconnect the
exhaust system front downpipe from the
manifold, then either unhook all the system’s
rubber mountings and withdraw the complete
exhaust system from under the vehicle, or
remove only the downpipe/catalytic converter
(see Chapter 4 for details).
10Unscrew the sump-to-transmission bolts,
also any securing the engine/transmission
lower adaptor plate.
11Unplugging the two electrical connectors,
disconnecting the vacuum hose (where fitted)
and disconnecting the crankcase breather
hose from the cylinder head cover, remove
the complete air cleaner assembly with the air
mass meter, the resonator and the plenum
chamber (see Chapter 4).
12Take the weight of the engine/
transmission unit using the lifting eyes
provided on the cylinder head; bolt on
15 Sump - removal and refitting
In-car engine repair procedures 2A•19
2A
14.32B . . . and to third stage using angle
gauge14.32C Cylinder head bolt tightening
sequence
Note:View from rear of vehicle15.12 Equipment must be available to raise
and support engine/transmission unit while
vehicle is raised, to allow sump removal
14.30 Refitting cylinder head - note
fabricated guide studs (arrowed)14.32A Tightening cylinder head bolts (to
first and second stages) using torque
wrench . . .
procarmanuals.com

the gasket, move the pump into the correct
position, and tighten its bolts to the specified
torque wrench setting.
14Check that the pump is correctly located;
if necessary, unbolt it again, and repeat the
full procedure to ensure that the pump is
correctly aligned.
15Fit a new crankshaft right-hand oil seal
(see Section 20).
16Using grease to stick the gasket in place
on the pump, refit the pick-up/strainer pipe,
tightening its screws and nut to their specified
torque wrench settings (see illustration).
17The remainder of reassembly is the
reverse of the removal procedure, referring to
the relevant text for details where required.
1Drain the cooling system (see Chapter 1).
Disconnect the coolant hoses from the oil
cooler.
2Unscrew the oil filter (see Chapter 1) -
catch any escaping oil in a drip tray.
3Unscrew the filter adaptor from the oil
pump, and withdraw the oil cooler; note how
its unions are aligned, and be prepared for oil
loss from the cooler.
4Refitting is the reverse of the removal
procedure, noting the following points:(a) Renew all O-rings and seals disturbed on
removal.
(b) Align the cooler’s unions as noted on
removal, and tighten the adaptor to the
specified torque wrench setting.
(c) Refill the cooling system (see Chapter 1).
(d) Refit the oil filter, then check the engine
oil level, and top-up as necessary (see
Chapter 1).
(e) Check for signs of oil or coolant leaks once
the engine has been restarted and warmed-
up to normal operating temperature.
1With the vehicle parked on firm level
ground, open the bonnet and disconnect the
battery negative (earth) lead - see Chapter 5,
Section 1.
2Raise the front of the vehicle, and support it
securely on axle stands.
3Undo the two screws, and remove the
sensor’s cover from the front of the sump
(see illustration).
4Unplug the wiring from the sensor (see
illustration). Where necessary, unplug the
electrical connector to disconnect the sensor
wiring, and unclip the connector to release
the wiring from the vehicle.
5Unscrew the sensor, and quickly plug the
sump aperture to minimise oil loss; note the
sensor’s seal.6Refitting is the reverse of the removal
procedure; renew the sensor’s seal if it is
worn or damaged, and tighten the sensor to
the specified torque wrench setting. Check
the engine oil level, and top-up as necessary
(see Chapter 1) - check for signs of oil leaks
once the engine has been restarted and
warmed-up to normal operating temperature.
1The switch is screwed into the rear of the
cylinder block, above the right-hand
driveshaft’s support bearing (see
illustration).
2With the vehicle parked on firm level
ground, open the bonnet and disconnect the
battery negative (earth) lead - see Chapter 5,
Section 1.
3Raise the front of the vehicle, and support it
securely on axle stands.
4Unplug the wiring from the switch, and
unscrew it; be prepared for some oil loss.
5Refitting is the reverse of the removal
procedure; apply a thin smear of suitable
sealant to the switch threads, and tighten it to
the specified torque wrench setting. Check
the engine oil level, and top-up as necessary
(see Chapter 1). Check for signs of oil leaks
once the engine has been restarted and
warmed-up to normal operating temperature.
Note:Don’t try to prise these seals out
without removing the oil pump or seal carrier -
the seals are too soft, and the amount of
space available is too small, for this to be
possible without considerable risk of damage
to the seal housing and/or the crankshaft
journal. Follow exactly the procedure given
below.
Right-hand seal
1Remove the oil pump (see Section 16).
2Drive the oil seal out of the pump from
behind (see illustration).
20 Crankshaft oil seals -
renewal
19 Oil pressure warning light
switch - removal and refitting
18 Oil level sensor-
removal and refitting
17 Oil cooler -
removal and refitting
2A•22 In-car engine repair procedures
16.16 Use new gasket when refitting oil
pick-up pipe to pump18.3 Remove screws (arrowed) to remove
oil level sensor cover . . .18.4 . . . disconnecting wiring from sensor
19.1 Oil pressure warning light switch
(arrowed) is screwed into rear of cylinder
block, above right-hand driveshaft support
bearing
20.2 Driving out crankshaft right-hand oil
seal
procarmanuals.com

safely and with relative ease, and which may
have to be hired or borrowed, includes (in
addition to the engine hoist) a heavy-duty trolley
jack, a strong pair of axle stands, some wooden
blocks, and an engine dolly (a low, wheeled
platform capable of taking the weight of the
engine/transmission, so that it can be moved
easily when on the ground). A complete set of
spanners and sockets (as described in the front
of this manual) will obviously be needed,
together with plenty of rags and cleaning
solvent for mopping-up spilled oil, coolant and
fuel. If the hoist is to be hired, make sure that
you arrange for it in advance, and perform all of
the operations possible without it beforehand.
This will save you money and time.
Plan for the vehicle to be out of use for
quite a while. A machine shop will be required
to perform some of the work which the do-it-
yourselfer can’t accomplish without special
equipment. These establishments often have
a busy schedule, so it would be a good idea
to consult them before removing the engine,
to accurately estimate the amount of time
required to rebuild or repair components that
may need work.
Always be extremely careful when removing
and installing the engine/transmission.
Serious injury can result from careless
actions. By planning ahead and taking your
time, the job (although a major task) can be
accomplished successfully.
Warning: Petrol is extremely
flammable, so take extra
precautions when disconnecting
any part of the fuel system. Don’t
smoke, or allow naked flames or bare light
bulbs in or near the work area, and don’t
work in a garage where a natural gas
appliance (such as a clothes dryer or water
heater) is installed. If you spill petrol on
your skin, rinse it off immediately. Have a
fire extinguisher rated for petrol fires
handy, and know how to use it.Note: Read through the entire Section, as well
as reading the advice in the preceding Section,
before beginning this procedure. The engine
and transmission are removed as a unit,
lowered to the ground and removed from
underneath, then separated outside the vehicle.
Removal
1Park the vehicle on firm, level ground, apply
the handbrake firmly, and slacken the nuts
securing both front roadwheels.
2Relieve the fuel system pressure (see
Chapter 4).
3Disconnect the battery negative (earth) lead
- see Chapter 5, Section 1. For better access
the battery may be removed completely (see
Chapter 5).
4Place protective covers on the wings and
engine compartment front crossmember, then
remove the bonnet (see Chapter 11).
5Whenever you disconnect any vacuum
lines, coolant and emissions hoses, wiring
loom connectors, earth straps and fuel lines
as part of the following procedure, always
label them clearly, so that they can be
correctly reassembled.
6Unplug the two electrical connectors,disconnect the vacuum hose (where fitted)
and disconnect the crankcase breather hose
from the cylinder head cover, then remove the
complete air cleaner assembly, with the air
mass meter, the resonator and the plenum
chamber (see Chapter 4).
7Equalise the pressure in the fuel tank by
removing the filler cap, then undo the fuel
feed and return lines connecting the engine to
the chassis (see Chapter 4). Plug or cap all
open fittings (see illustration).
8Disconnect the accelerator cable from the
throttle linkage as described in Chapter 4 -
where fitted, also disconnect the cruise
control actuator cable (see Chapter 12).
Secure the cable(s) clear of the
engine/transmission.
9Releasing its wire clip, unplug the power
steering pressure switch electrical connector,
then unbolt the power steering high-pressure
pipe and the earth lead from the cylinder head
rear support plate/engine lifting eye (see
illustrations).
10Marking or labelling all components as
they are disconnected (see paragraph 5
above), disconnect the vacuum hoses as
follows:
4 Engine/transmission -
removal and refitting
2B•4 Engine removal and general engine overhaul procedures
4.7 Note colour-coding of unions when
disconnecting fuel feed and return lines4.9A Unplug the power steering pressure
switch electrical connector . . .4.9B . . . unbolt the power steering high-
pressure pipe . . .
Whenever any wiring is disconnected, . . . vacuum hoses and pipes should
mark or label it as shown, to ensure be similarly marked
correct reconnection . . .
Masking tape and/or a touch-up paint applicator work well for marking items. Take
instant photos, or sketch the locations of components and brackets.
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