1982 FORD SIERRA ECU

leaving the wires, hoses, pipes and cables
connected. However, care must be taken not
to strain any of the wires, hoses or cables.
31Disconnect the exhaust gas oxygen
sensor wiring connector (see illustration)
then unscrew the three securing bolts and
disconnect the exhaust downpipe from the
manifold flange. Recover the gasket.
32If desired, remove the exhaust manifold.
33If the inlet manifold is to be removed with
the cylinder head, disconnect all relevant
wires, hoses, pipes and cables, otherwise
unbolt the manifold and move it to one side,
ensuring that it is adequately supported.
34Note the information given in paragraphs
18 to 21 inclusive of Section 20.
Refitting
35With the cylinder head refitted, proceed
as follows.
36Refit the manifolds and/or reconnect all
wires, hoses, pipes and cables as applicable.
37Reconnect the exhaust downpipe to the
manifold using a new gasket, and reconnect
the exhaust gas oxygen sensor wiring
connector.
38Reconnect the earth lead to the battery
tray.
39Refit the spark plugs and reconnect the
HT leads.
40Refit the air cleaner.
41Reconnect the coolant hoses to the
thermostat housing and cylinder head.
42Fill the cooling system.
43Reconnect the battery negative lead.Note: The cylinder head bolts must always be
renewed after slackening, and a new cylinder
head gasket and camshaft cover gasket must
be used on refitting. If the engine has recently
run, the cylinder head must be allowed to cool
to room temperature before it is removed.
1.8 litre (R2A type)
Removal
1With the manifolds removed, proceed as
follows.
2Remove the timing belt, camshaft sprocket,
and timing belt backplate.
3Disconnect the crankcase ventilation hose
from the camshaft cover.
4Unscrew the nine securing bolts and
remove the camshaft cover and gasket (see
illustration).
5Unscrew the ten cylinder head bolts half a
turn at a time in the reverse order to that
shown for tightening.
6With the bolts removed, lift the cylinder
head from the block (see illustration). If the
cylinder head is stuck, tap it free with a
wooden mallet. Do not insert a lever into the
joint between the cylinder head and block as
this may result in damage to the mating faces.
Place the cylinder head on blocks of wood to
prevent damage to the valves.7Recover the gasket, and the locating
dowels if they are loose (see illustration).
Refitting
8Commence refitting as follows.
9Turn the crankshaft so that No 1 piston is
approximately 20.0 mm (0.8 in) before TDC.
This precaution will prevent any damage to
open valves.
10Make sure that the mating faces of the
cylinder block and cylinder head are perfectly
clean, then refit the locating dowels to the
block where applicable, and locate a new
gasket over the dowels with the red sealing
bead and the “1.8” mark uppermost (see
illustrations). Do not use jointing compound.
11Turn the camshaft so that the TDC pointer
on the camshaft sprocket is aligned with the
dot on the cylinder head front face.
12Lower the cylinder head onto the gasket,
making sure that the locating dowels engage.
13Insert the new cylinder head bolts into
their locations in the cylinder head, then
tighten the bolts in the order shown to the five
stages given in the Specifications (see
illustrations).
14Fit a new camshaft cover gasket to the
cylinder head, ensuring that the gasket
locates correctly over the edges of the
cylinder head (see illustration).
15Refit the camshaft cover and tighten the
bolts evenly, ensuring that the studded bolts
which retain the HT lead clips are refitted to
their correct positions (see illustration).
20Cylinder head - removal and
refitting (engine removed)
2C•14CVH engines
19.31 Disconnecting the exhaust gas
oxygen sensor wiring connector -
1.6/1.8 litre (R6A)20.6 Withdraw the cylinder head bolts and
lift the cylinder head from the block -
1.8 litre (R2A)
20.10b . . . then locate a new gasket with
the red sealing bead and “1.8” mark
uppermost - 1.8 litre (R2A)20.10a Fit the locating dowels (arrowed) to
the block . . .20.7 Recover the cylinder head gasket -
1.8 litre (R2A)
20.4 Remove the camshaft cover and
gasket - 1.8 litre (R2A)

4Repeat the procedure given in paragraphs
2 and 3 for the remaining valves, keeping all
components identified for location so that
they can be refitted in their original positions.
Note that the inlet valve springs are fitted with
metal dampers. The damper is an integral part
of the spring and cannot be removed (see
illustration).
Reassembly
5Commence reassembly by lubricating the
valve stems and guides with SAE 80/90
hypoid oil, then insert the valves into their
original guides.
6Refit the spring seats over the valve stems.
7Wrap a thin layer of adhesive tape over the
collet grooves of each valve, then smear the
new oil seals with a little hypoid oil and slide
them down the valve stems onto the spring
seats. Use a suitable metal tube to seat the
seals, then remove the adhesive tape from the
valves (see illustration).
8Working on each valve in turn, fit the valve
spring and cap, then compress the spring
using the valve spring compressor and fit the
split collets to the groove in the valve stem.
Release the compressor and tap the end of
the valve stem with a soft-faced mallet to
settle the components. If the original
components are being refitted, ensure that
they are refitted in their original locations.
9Refit the camshaft.
1.6 and 1.8 litre (R6A type)
10Proceed as described in paragraphs 1 to 9
inclusive, but note that no dampers are fitted
to the inlet valve springs on the 1.6 litre engine.Refer to Section 23, Chapter 2, Part A but
pay particular attention to the note at the
beginning of the Section as all CVH engines
are fitted with hardened valve seats.
Note: A new camshaft oil seal and new rocker
arm securing nuts should be used when
refitting.
1.8 litre (R2A type)
Removal
1Remove the cylinder head.
2Unscrew the securing bolts and remove the
rocker arm guides, rocker arms, and cam
follower guide retainers, then lift out the cam
follower guides and the cam followers. Keep
all components in the correct order so that
each component can be refitted in the original
position if it is to be re-used. It is advisable to
store the cam followers upright in an oil bath
until they are to be refitted. Ensure that the
depth of oil is sufficient to fully cover the cam
followers.
3Prise out the camshaft oil seal, taking care
not to damage the surface of the camshaft. If
necessary use self-tapping screws and a
suitable pair of grips to withdraw the seal.4Unscrew the two securing bolts and
withdraw the camshaft thrustplate from the
front of the cylinder head.
5Carefully withdraw the camshaft from the
front of the cylinder head, taking care not to
damage the bearings. If necessary, loosely
refit the camshaft sprocket and bolt to aid
removal.
Inspection
6Examine the surfaces of the camshaft
journals and lobes, and the cam follower rollers
for wear. If wear is excessive, considerable
noise would have been noticed from the top of
the engine when running, and a new camshaft
and followers must be fitted. It is unlikely that
this level of wear will occur unless a
considerable mileage has been covered. Note
that the cam followers cannot be dismantled
for renewal of individual components.
7Check the camshaft bearings in the cylinder
head for wear. If excessive wear is evident, it
may be possible to have the head machined by
a suitably equipped engineering workshop to
enable a camshaft with oversize bearing
journals to be fitted. The only other course of
action available is renewal of the cylinder head.
8Check the cam follower bores in the
cylinder head for wear. If excessive wear is
evident, the cylinder head must be renewed.
9Check the cam follower oil ports and the oil
holes in the cylinder head for obstructions
(see illustrations).
Refitting
10Commence refitting by lubricating the
camshaft, bearings and thrustplate with
23Camshaft and cam followers
- removal, inspection and
refitting
22Cylinder head - inspection and
renovation
2C•16CVH engines
21.3a Remove the spring seat . . .21.4 Inlet valve components. Spring
damper arrowed - 1.8 litre (R2A)
23.9b Cam follower supply hole (arrowed)
in cylinder head - 1.8 litre (R2A)23.9a Hydraulic cam follower oil port
(arrowed) - 1.8 litre (R2A)21.7 Seat each new valve seal using a
metal tube - 1.8 litre (R2A)
21.3b . . . and valve - 1.8 litre (R2A)

hypoid oil, then carefully insert the camshaft
from the front of the cylinder head, taking care
not to damage the bearings (see illustration).11Locate the thrustplate in the camshaft
groove, then refit the bolts and tighten them.
Note that the stamped number on the
thrustplate should face forwards (see
illustrations).
12Using a dial test indicator if available, or
feeler blades, check that the camshaft
endfloat is within the limits given in the
Specifications. If not, renew the thrustplate
and re-check. If this does not bring the
endfloat within limits, the camshaft must be
renewed.
13Remove the thrustplate bolts, coat the
threads with sealing compound, then refit and
tighten the bolts.
14Smear the lip of the new camshaft oil seal
with clean engine oil, then fit the seal using the
camshaft sprocket bolt and a suitable toolsimilar to that shown (see illustration).Draw the
seal into position so that it rests on the shoulder.
15Lubricate the cam followers with hypoid
oil, refit them to their original locations, with
the colour marking pointing to the oil feed
hole in the cylinder head. The oil feed port in
the cam follower should be opposite the oil
feed hole in the cylinder head (see
illustrations).
16Lubricate the tops of the cam followers,
then refit the four cam follower guides to their
CVH engines 2C•17
2C
23.11b . . . and tighten the securing bolts -
1.8 litre (R2A)
23.14 Using a special tool to fit the
camshaft oil seal - 1.8 litre (R2A)
23.11a Refit the camshaft thrustplate . . .23.10 Refitting the camshaft -
1.8 litre (R2A)
23.15a Hydraulic cam follower and rocker assembly orientation - 1.8 litre (R2A)
1 Cam follower colour markings
2 Oil port in cam follower
3 Oil supply hole in cylinder head
4 Securing bolt5 Rocker arm guide
6 Rocker arm
7 Cam follower guide retainer -
stepped end to inlet side8 Cam follower guide - stepped end to
exhaust side
9 Cam follower
10 Front of engine
The tool can be improvised
using a metal tube of
suitable diameter and a large
washer or metal disc.

original locations with their “stepped” ends
pointing towards the exhaust side of the
cylinder head (see illustration).
17Refit the four cam follower guide retainers
to their original locations with their “stepped”
ends pointing towards the inlet side of the
cylinder head (see illustration).
18Temporarily refit the camshaft sprocket,
and turn the camshaft so that the TDC pointer
on the sprocket is aligned with the dot on the
cylinder head front face (ie the pointer is at the
12 o’clock position).
19Refit rocker arms Nos 1, 2, 4 and 5
together with their rocker arm guides and
securing bolts, to their original locations (see
illustration). Lubricate the contact faces of
the rocker arms and guides and the valve
stems with hypoid oil, and ensure that the
guides seat correctly in their locations in the
cylinder head (see illustration). Tighten the
securing bolts to the specified torque.
20Turn the camshaft through 180º so that
the camshaft sprocket keyway is aligned with
the dot on the cylinder head front face (ie the
TDC pointer on the sprocket is at the 6
o’clock position) (see illustration).
21Repeat the procedure given in paragraph
19 for rocker arms Nos 3, 6, 7 and 8.
22Remove the camshaft sprocket and refit
the cylinder head.
1.6 and 1.8 litre (R6A type)
Removal
23Remove the cylinder head. 24Unscrew the securing nuts and remove
the rocker arm guides, rocker arms, and
spacer plates, then lift out the cam followers.
Keep all components in the correct order so
that they can be refitted in their original
locations on reassembly. It is advisable to
store the cam followers upright in an oil bath
until they are to be refitted. Ensure that the
depth of oil is sufficient to fully cover the cam
followers.
25Prise out the camshaft oil seal, taking care
not to damage the surface of the camshaft. If
necessary, use self-tapping screws and a
suitable pair of grips to withdraw the seal.
26Unscrew the two securing bolts, and
withdraw the camshaft thrustplate from the
front of the cylinder head.
27Carefully withdraw the camshaft from the
front of the cylinder head, taking care not to
damage the bearings. If necessary, loosely
refit the camshaft sprocket and bolt to aid
removal.
Inspection
28Proceed as described in paragraphs 6 to
9 inclusive.
Refitting
29Commence refitting by lubricating the
camshaft, bearings and thrustplate with
hypoid oil, then carefully insert the camshaft
from the front of the cylinder head, taking care
not to damage the bearings.
30Locate the thrustplate in position in the
cylinder head, then refit the bolts and tighten
them. Note that the oil groove in thethrustplate must face the front of the engine.
31Using a dial test indicator (if available) or
feeler blades, check that the camshaft
endfloat is within the limits given in the
Specifications. If not, renew the thrustplate
and re-check. If this does not bring the
endfloat within limits, the camshaft must be
renewed.
32Smear the lip of the new camshaft oil seal
with clean engine oil, then refit the seal using
the camshaft sprocket bolt and a suitable
tool. The tool can be improvised using a metal
tube of suitable diameter and a large washer
or metal disc. Draw the seal into position so
that it rests on the shoulder.
33Lubricate the cam followers with hypoid
oil, then refit them to their original locations in
the cylinder head.
34Before each rocker arm is fitted and its
(new) nut tightened, it is essential to ensure
that the relevant cam follower is positioned at
its lowest point (in contact with the cam base
circle, not the tip of the cam lobe). Turn the
camshaft (by means of the camshaft sprocket
bolt if necessary) as necessary to achieve this.
35Lubricate the tops of the cam followers,
then refit the spacer plates, rocker arms and
rocker arm guides to their original locations.
36Secure the rocker arms using new nuts
tightened to the specified torque, bearing in
mind the point made in paragraph 34.
37Refit the cylinder head.
2C•18CVH engines
23.17 . . . and retainers - 1.8 litre (R2A)
23.20 Camshaft sprocket keyway aligned
with dot on cylinder head - 1.8 litre (R2A)23.19b Lubricate the valve stem contact
faces and refit the rocker arms and guides
- 1.8 litre (R2A)23.19a Rocker arm numbering sequence -
1.8 litre (R2A)
23.16 . . . guides . . .23.15b Refit the cam followers . . .

Note: New flywheel securing bolts must be
used on refitting.
1.8 litre (R2A type)
1Refer to Section 26, Chapter 2, PartA but
also note the following points.
2The flywheel/driveplate securing bolts must
be renewed when refitting, and the new bolts
are supplied ready-coated with threadlocking
compound (see illustration).
3The ring gear cannot be renewed
independently of the flywheel/driveplate. If the
ring gear is badly worn or has missing teeth, a
new flywheel/driveplate must be fitted.
1.6 and 1.8 litre (R6A type)
4Refer to Section 26, Chapter 2, PartA,
noting the following points.
5If the engine is in the vehicle, refer to
Chapter 6 when removing the clutch.
6The flywheel securing bolts must be
renewed when refitting, and the new bolts are
supplied ready-coated with thread-locking
compound.
7The ring gear cannot be renewed
independently of the flywheel. If the ring gear
is badly worn or has missing teeth, a new
flywheel must be fitted. Similarly, the flywheel
must be renewed if the crankshaft
speed/position sensor toothed disc is
damaged.
1.8 litre (R2A type)
1Remove the timing belt and the crankshaft
sprocket and thrustwasher.
2Withdraw the oil seal using an oil seal
removal tool or by drilling the oil seal outer
face and using self-tapping screws and a pair
of grips.
3Clean the oil seal housing, then smear the
lip of a new oil seal with clean engine oil.
4Fit the oil seal using the crankshaft pulley
bolt and a suitable tool similar to that shown
(see illustration).5As the seal is drawn into position, the inner
edge of the seal may be damaged as it passes
over the end of the shaft. To prevent this, as
soon as the seal begins to locate in the
housing remove the tools being used to fit the
seal, and carefully work the inner edge of the
seal over the end of the crankshaft, using a
small screwdriver or similar blunt tool. The
seal can then be pushed home using the tools
described previously (see illustration).
6Refit the thrustwasher, crankshaft sprocket
and timing belt.
1.6 and 1.8 litre (R6A type)
7Remove the timing belt, and the crankshaft
sprocket and thrustwasher.
8Proceed as described in paragraphs 2 to 4
inclusive.
9Refit the thrustwasher, crankshaft sprocket
and timing belt.
1Remove the flywheel/driveplate.
2Prise out the oil seal. If necessary, drill the
outer face of the oil seal and use self-tappingscrews and a pair of grips to withdraw the
seal (see illustration).
3Clean the oil seal housing, then fit the new
oil seal using two flywheel/driveplate securing
bolts and a tool similar to that shown (see
illustration). A suitable tool can be
improvised using a narrow strip of metal sheet
bent to form a circle of the correct diameter,
and a large metal disc with appropriate holes
drilled to allow the flywheel/driveplate
securing bolts to pass through. Make sure
that the seal lip faces into the engine and
lightly smear the lip with clean engine oil.
4Refit the flywheel/driveplate.
Note: A new gasket and new sump bolts must
be used when refitting, and suitable sealant will
be required (available from a Ford dealer). Note
that it is preferable to keep the engine upright
until the sump has been removed to prevent
sludge from entering the engine internals.
1.8 litre (R2A type)
Removal
1With the engine removed, proceed as
follows.
2Remove the flywheel/driveplate and the
engine adapter plate.
3Unscrew the fourteen securing bolts and
withdraw the two reinforcing strips and the
sump. If the sump is stuck, carefully tap it
sideways to free it. Do not prise between the
mating faces.
27Sump - removal and refitting
26Crankshaft rear oil seal -
renewal
25Crankshaft front oil seal -
renewal
24Flywheel/driveplate - removal,
inspection and refitting
CVH engines 2C•19
2C
25.5 Crankshaft front oil seal (arrowed)
located in oil pump housing - 1.8 litre (R2A)26.3 Using a special tool to fit the
crankshaft rear oil seal - 1.8 litre (R2A)26.2 Crankshaft rear oil seal location
(arrowed)
25.4 Using a special tool to fit the
crankshaft front oil seal - 1.8 litre (R2A)24.2 Using an improvised tool to hold the
flywheel stationary while tightening the
securing bolts - 1.8 litre (R2A)
A tool can be improvised to fit
the crankshaft front oil seal
by using a metal tube of
suitable diameter and a large
washer or metal disc. Do not attempt to
drive the seal home using a tube drift.

4Recover the gasket.
5Thoroughly clean the mating faces of the
cylinder block and sump.
Refitting
6Commence refitting by applying sealing
compound (available from a Ford dealer) to
the cylinder block, oil pump housing and
crankshaft rear oil seal housing mating faces
at the points shown (see illustration). Note
that the sump must be fitted within ten
minutes of applying the sealing compound.
7Fit a new gasket, ensuring that it engages
correctly in the grooves in the crankshaft rear
oil seal carrier and the oil pump housing (see
illustration).
8Locate the sump on the gasket and loosely
fit the securing bolts.
9Tighten all the bolts slightly to obtain a light
and even gasket preload.
10Tighten the bolts to the specified torque in
the sequence shown (see illustration). Note
that the ten M8 bolts and the four M6 bolts
are tightened to different torques.
11Refit the engine adapter plate and the
flywheel/driveplate.
1.6 and 1.8 litre (R6A type)
Note: The following procedure applies to the
1.6 litre CVH engine. For the 1.8 litre (R6Atype) engine, proceed as described above for
the 1.8 litre (R2A type).
Removal
12Sump removal and refitting is easier if the
engine is removed from the vehicle. However,
if the engine is in the vehicle, proceed as
follows. If the engine has been removed from
the vehicle, proceed to paragraph 15.
13Remove the clutch.
14Drain the engine oil into a suitable
container.
15Remove the flywheel and the engine
adapter plate.
16Unscrew the eighteen securing bolts and
withdraw the sump. If the sump is stuck,
carefully tap it sideways to free it. Do not prise
between the mating faces. Recover the
gasket.
17Thoroughly clean the mating faces of the
cylinder block and sump.
Refitting
18Apply sealing compound to the joints
between the oil pump and the cylinder block,
and the crankshaft rear oil seal housing and
the cylinder block, as shown (see
illustration).
19Without applying any further sealer, locate
the gasket into the grooves of the oil pump
and the rear oil seal housing. To hold the
gasket in position, studs can be inserted
temporarily in the bolt hole positions circled in
the illustration indicating the bolt tightening
sequence. Make sure that the gasket spacing
pips are seated correctly.20Locate the sump on the gasket, taking
care not to displace the gasket, then loosely
fit the securing bolts. With the sump in
position, where applicable remove the studs
from the bolt holes, and loosely fit the
remaining securing bolts.
21Tighten the bolts to the torque given in the
Specifications at the beginning of this
Chapter, in two stages, and in the sequence
shown (see illustration).
22Refit the engine adapter plate and the
flywheel.
23If the engine is in the vehicle, refit the
clutch. Refill the engine with oil.
Note: New oil pump and oil pick-up tube
gaskets should be used when refitting.
Removal
1With the engine removed, proceed as
follows.
2Remove the timing belt, crankshaft
sprocket and thrustwasher.
3Remove the sump.
4Unscrew and remove the nut securing the
oil strainer/pick-up tube to No 4 main bearing
cap (see illustration).
5Using a suitable Allen key, unscrew the two
bolts securing the oil pick-up tube to the oil
pump, and withdraw the oil strainer/pick-up
tube. Recover the washers and gasket (see
illustration).
28Oil pump - removal and
refitting
2C•20CVH engines
27.6 Apply sealing compound to the areas
shown before fitting the sump gasket -
1.8 litre (R2A)27.10 Sump bolt tightening sequence -
1.8 litre (R2A)
27.21 Sump bolt tightening sequence -
1.6 litre
Arrow indicates front of engine
27.18 Apply sealing compound at the
points arrowed before refitting the sump -
1.6 litre
A Oil pump/cylinder block joint
B Crankshaft rear oil seal
housing/cylinder block joint
27.7 Ensure that the gasket locates
correctly on the oil pump housing -
1.8 litre (R2A)
28.4 Oil strainer/pick-up tube securing nut
(arrowed) on No 4 main bearing cap

6Unscrew and remove the six securing bolts,
and withdraw the oil pump over the front of
the crankshaft. Recover the gasket.
Refitting
7Commence refitting by prising the
crankshaft front oil seal from the pump
housing.
8Prime the pump by injecting clean engine
oil into it and turning it by hand.
9Using a new gasket, fit the oil pump over
the front of the crankshaft, ensuring that the
central rotor engages with the flats on the
crankshaft (see illustration). Fit the securing
bolts, and using a straight-edge, ensure that
the bottom face of the oil pump is aligned with
the bottom face of the cylinder block before
finally tightening the bolts.
10Using a new gasket, fit the oil pick-up
tube to the oil pump and secure with the two
bolts.11Refit the oil strainer/pick-up tube securing
nut to No 4 main bearing cap.
12Refit the sump.
13Fit the crankshaft front oil seal using a
suitable tool.
14Refit the thrustwasher, crankshaft
sprocket and timing belt.
1.8 litre (R2A type)
1If oil pump wear is suspected, check the
cost and availability of new parts and the cost
of a new pump. Examine the pump as
described in this Section and then decide
whether renewal or repair is the best course of
action.
2Using a suitable Torx socket, unscrew the
seven securing bolts and remove the oil pump
cover (see illustration).
3Mark the rotor faces so that the rotors can
be refitted in their original positions, then lift
the rotors from the pump housing (see
illustration).
4Unscrew the pressure relief valve plug and
withdraw the spring and plunger (see
illustration).
5Thoroughly clean all parts in petrol or
paraffin and wipe dry using a non-fluffy rag.
6Commence reassembly by lubricating the
relief valve plunger. Fit the plunger and spring,
and screw the plug into place.
7Lubricate the rotors and fit them, observingthe marks made when dismantling, if
applicable.
8The necessary clearances may now be
checked using a machined straight-edge
(such as a good steel rule) and a set of feeler
blades. The critical clearances are between
the lobes of the centre rotor and convex faces
of the outer rotor; between the outer rotor and
pump body; and between both rotors and the
cover plate (endfloat). The serviceable
clearances are given in the Specifications.
9Endfloat can be measured by placing a
straight-edge across the pump body and
measuring the clearance between the two
rotors and the straight-edge using feeler
blades.
10Refit the pump cover and tighten the
securing bolts.
11Prime the pump before refitting.
1.6 and 1.8 litre (R6A type)
12The procedure is as described above but
refer to the Specifications at the beginning of
this Chapter for the rotor clearances.
1.8 litre (R2A type)
Removal
1With the engine removed from the vehicle,
remove the sump and the cylinder head.
2Check the big-end caps for identification
marks and if necessary use a centre-punch to
identify the caps and connecting rods (see
illustration).
3Turn the crankshaft so that No 1 crankpin is
at its lowest point, then unscrew the nuts or
bolts and tap off the cap. Keep the bearing
shells in the cap and connecting rod.
4Using the handle of a hammer, push the
piston and connecting rod up the bore and
withdraw from the top of the cylinder block.
Loosely refit the cap to the connecting rod.
5Repeat the procedure in paragraphs 3 and
4 on No 4 piston and connecting rod, then
turn the crankshaft through half a turn and
repeat the procedure on Nos 2 and 3 pistons
and connecting rods.
30Pistons and connecting rods
- removal and refitting
29Oil pump - dismantling,
inspection and reassembly
CVH engines 2C•21
2C
29.2 Remove the oil pump cover
30.2 Big-end cap and connecting rod
identification marks (arrowed) -
1.8 litre (R2A)29.4 Unscrew the pressure relief valve plug
and withdraw the spring and plunger29.3 Lifting out the oil pump inner rotor
28.9 Refitting the oil pump28.5 Removing the oil pick-up tube from
the oil pump

the tapered lower compression ring with the
“TOP” mark towards the top of the piston and
the gap 150º from the spreader gap, then fit
the upper compression ring with the gap 150º
on the other side of the spreader gap. Note
that the compression rings are coated with a
molybdenum skin which must not be
damaged.
1.6 and 1.8 litre (R6A type)
6Proceed as described in paragraphs 1 to 5
inclusive, but note the following differences
for the 1.6 litre engine.
7Before fitting the new rings to the pistons,
insert them into the relevant cylinder bore and
use a feeler blade to check that the end gaps
are within the limits given in the Specifications
at the beginning of this Chapter. Check the
end gaps with the ring at the top and the
bottom of the cylinder bore.8Fit the oil control ring sections with the
spreader ends abutted opposite the front of
the piston, making sure that the ends do not
overlap. The side ring gaps should be offset
120º either side of the spreader gap. Fit the
tapered lower compression ring with the
“TOP” mark uppermost and the gap 120º
from the spreader gap, then fit the upper
compression ring with the gap 120º on the
other side of the spreader gap. Note that the
compression rings are coated with a
molybdenum disulphide skin, which must not
be damaged.
1.8 litre (R2A type)
Removal
1With the engine removed from the vehicle,
remove the timing belt, crankshaft sprocket
and thrustwasher.
2Remove the pistons and connecting rods. If
no work is to be done on the pistons and
connecting rods, there is no need to push the
pistons out of the cylinder bores.
3Remove the oil pump and pick-up tube.
4Unscrew the four securing bolts and
remove the crankshaft rear oil seal housing.
5Check the main bearing caps for
identification marks and if necessary use a
centre-punch to identify them.
6Before removing the crankshaft, check that
the endfloat is within the specified limits byinserting a feeler blade between the centre
crankshaft web and the thrust bearing shell
(see illustration). This will indicate whether a
new thrust bearing shell is required.
7Unscrew the bolts and tap off the main
bearing caps complete with bearing shells.
8Lift the crankshaft from the crankcase.
9Extract the bearing shells, keeping them
identified for location.
Refitting
10Commence refitting as follows.
11Wipe the bearing shell locations in the
crankcase with a soft, non-fluffy rag.
12Wipe the crankshaft journals with a soft,
non-fluffy rag.
13If the old main bearing shells are to be
renewed (not to do so is a false economy,
unless they are virtually new) fit the five upper
halves of the main bearing shells to their
location in the crankcase. Note the flanged
thrust bearing shell should be fitted to the
centre bearing location (see illustrations).
14Identify each main bearing cap and place
in order. The number is cast on to the cap and
an arrow is also marked which should point
towards the front of the engine.
15Wipe the cap bearing shell location with a
soft non-fluffy rag.
16Fit the bearing half shell onto each main
bearing cap.
17Lubricate the crankshaft journals and the
upper and lower main bearing shells with
clean engine oil.
18Carefully lower the crankshaft into the
crankcase (see illustration).
19Lubricate the crankshaft main bearing
journals again, then fit No 1 bearing cap. Fit
the two securing bolts but do not tighten yet.
20Fit the rear bearing cap, then the centre
bearing cap, but as before do not tighten the
bolts yet.
21Fit the intermediate bearing caps and
securing bolts, noting that the studded bolt
which retains the oil strainer/pick-up tube fits
on the inlet manifold side of No 4 bearing cap.
Again, do not tighten the bolts yet.
22Check that the arrows on the bearing
caps all point towards the front of the engine,
and lightly tighten all the bearing cap bolts,
then finally tighten the bolts in a progressive
manner to the specified torque (see
illustrations).
32Crankshaft and main bearings
- removal and refitting
CVH engines 2C•23
2C
32.13b Centre main thrust bearing shell in
cylinder block - 1.8 litre (R2A)
32.22b Tightening a main bearing cap bolt.
Note studded bolt location (arrowed) on
No 4 bearing cap - 1.8 litre (R2A)32.22a The arrows on the bearing caps
must point towards the front of the engine
- 1.8 litre (R2A)32.18 Lowering the crankshaft into the
crankcase - 1.8 litre (R2A)
32.13a Rear main bearing shell in cylinder
block - 1.8 litre (R2A)
32.6 Checking crankshaft endfloat -
1.8 litre (R2A)