1998 JAGUAR X308 ECU

28
.
Install the tensioner to the cylinder block.
1. Position and align the tensioner to the cylinder block and to the mating slot on the rear face of the tensioner blade.
2. Install and tighten the two bolts to 12 Nm.

29
.
Use a wedge 303 - 533 (or two if required) between the primary chain
tensioner and tensioner blade, to ta ke up the slack in the chain, for
tightening the VVT unit and exhaust camshaft sprocket.

30
.
CAUTION: Make sure that a new bolt is installed.
Tighten the exhaust camshaft sprocket securing bolt. 1. Instal the chain tensioner t ool 303 - 532 to the sprocket holes.
Appl
y force to the tool in an anti
-clockwise direction to tension the
chain on its drive side.
2. Whilst applying the opposing force to the sprocket and chain, tighten the sprocket securing bolt to 20 Nm + 90°.

31
.
CAUTION: Make sure that a new bolt is installed.
Tighten the VVT unit securing bolt. 1. Whilst still applying the opposing force to the sprocket and chain (using 303 - 532), check that the wedges are still in place, tighten
the VVT unit securing bolt to 20 Nm + 90°.
R
emove the chain tensioning tool and the wedge(s).
32

.
Remove the camshaft locking tool 303 - 530.
33. Raise the vehicle on the ramp.
34. Remove the crankshaft setting tool 303 - 531.
35. Install the crankshaft position sensor.
1. Install the sensor to the flywheel housing and Install the securing bolt. Tighten to 10 Nm.

2. In
stall the access grommet to the housing.
36. Lower the ramp.

37. Ins
tall and tighten the nuts which secure the exhaust manifold to the
downpipe catalyst.

38 . In
stall new seals to the A-Bank VVT bush carrier.
1. Install the new sealing ring (scarf jointed) to the carrier bush groove.
2. Install a new O-ring to the carrier oil-way.

39 . Install the bush c
arrier to the cylinder block.
Lu
br
icate the seal (scarf
jointed) and the bush.
1. Install the bush carrier assembly.
Chec k that
the seals are
in place and that the ri ng dowels are engaged
squarely. Fully locate the assembly as much as possible by hand
pressure.
2. Install the three securing bolts. Tighten to 21 Nm.
40. Install new sealing rings to the coolant outlet pipe grooves.

41. Install the coolant
outlet pipe.
1. Install the outlet pipe to the bypass hose and to the cylinder heads.
2. Install the four bolts which secure the outlet pipe.
42. Connect the hoses and multi-plug to the coolant outlet pipe.
1. Connect the heater hose and reposition the hose clip.

Engine - Engine Front Cover
In-vehic
le Repair
Remov
a
l
1.
Op
en the engine compartment and fit paintwork protection
sheets.
2. Set the bonnet to the service access position.

3. Disc
onnect the batt
ery ground cable.
Re
move the battery cover.
4. Drain the coolant from the radiator. Refer to Operation
26.10.01.

5. Disc onne
ct the radiator top hose.
1. Slacken the hose retaining clip and reposition the clip
along the hose.
2. Disconnect the hose from the radiator.

6. Disc
onnect the top hose from the coolant outlet pipe.
1. Release and reposition th e hose clip, and disconnect
the top hose.
7. Slacken the three screws which secure the water pump pulley.

8. Remove the
drive belt from
the generator and accessory
drive.
1. Use a spanner e.g. Churchill JD - 230 or Snap On XDHM 1415, on the centre bo lt of the belt tensioner
idler pulley, to turn the adju ster assembly to the left
against spring tension.
2. Whilst holding the tensioner against spring tension, remove the drive belt from the generator pulley.
Release the tensioner sl owly and remove the
spanner.
D
isconnect the belt from the
other pulleys and remove it.


9. Re
move the pulley from the water pump.
1. Remove the pulley securing screws.
2. Remove the pulley from the water pump.
10. Remove the belt tensione r assembly, from the Front
Accessory Drive. Refer to Operation 12.10.41.
11. Remove the idler pulley, from the Front Accessory Drive.
Refer to Operation 12.10.43.
12. Remove the crankshaft damper. Refer to Operation 12.21.09.
13. Carefully remove the engine covers, taking care not to
damage the plasti c fixings or the rubber inserts.
14. Disconnect the intake tube from the throttle body.
1. Remove the two bolts which secure the intake tube to the throttle body.
2. Disconnect the intake tube from the throttle body.

23
.
Remove the timing cover securing bolts.
1. Remove the twenty-fou r bolts which secure the
timing cover.

24
.
Remove the timing cover, step 1.
Ease the cover towards the front of
the vehicle to separate

it from the engine.

25
.
Remove the timing cover, step 2.
Stan
ding at the right hand side
of the vehicle, rotate and
manoeuvre the cover upwards to clear the water pump
and hoses.
26. Remove the timing cover, step 3.
Li
ft the cover clear of th
e engine compartment.

In
stallation

27
. Clean all parts and mating faces.


1. Fit ne
w seals to the timing cover.
1. Fit and fully locate, a new seal to the inner groove on the face of the timing cover.
2. Fit and fully locate, a new seal to the outer groove on the face of the timing cover.
Re
move the transit ring and check that the oil seal is not
damaged.

2. Appl y s
ealant to the eight joints on the engine face.
Sealant
beads to be 3mm di ameter an
d 12mm long. Cut
the nozzle of the sealant tube to produce a 3mm bead.
(Fit and tighten the securing bolts within twenty minutes
of sealant application)

3. Re
fit the timing cover, step 1.
Lo
wer th
e cover into the engine compartment, to its
approximate position.
4. Refit the timing cover, step 2.
Stan din
g at the right hand side
of the vehicle, rotate and
manoeuvre the cover downwards to clear the water pump

and hoses.

5. R
efit the timing cover, step 3.
Ease

the cover towards the engi
ne and locate it directly
onto the dowels so that th e gaskets or sealant are not
smeared.

6. F
it and tighten the securing bolt
s in the correct order. Tighten
to 11-13 Nm.
7. Reposition and secure the engine harness clips to the timing
cover.

8. Re
fit the variable valve timing
solenoids. Refer to Operation
18.30.63.
9. Refit the camshaft covers. Refer to Operations 12.29.43.and
12.29.44.
10. Refit the on-plug ignition coils and coil covers. Refer to
Operation 18.20.41 and 18.20.42.
11. Refit the purge valve. Refer to Operation 17.45.01.

12 . F
it the intake tube / air flow meter / air cleaner cover
assembly.
1. Fit a new rubber seal; air in take tube to throttle body.

2.
Fit the intake tube / air
flow meter / air cleaner cover
assembly.

13 . R
econnect the air cleaner cover.
F
it
the five clips which secu
re the air cleaner cover.

14. Co
nnect the intake tube to the throttle body.
1. Connect the intake tube to the throttle body.
2. Fit the two bolts which secure the intake tube to the throttle body.