1998 JAGUAR X308 ECU

18. L
oosen the bolt which secures
the VVT unit to the camshaft.

19 . Re
move the primary ch
ain tensioner bolts.

20 . R
emove the tensioner assembly.
1. Remove the tensioner.
2. Remove the tensioner back-plate.
21. Remove the chain tensioner blade.
1. Remove the pivot bolt which secures the tensioner blade.
2. Remove the tensioner blade.

22
.
Remove the chain from the VVT unit and from the crankshaft
pulley.

23
.
Remove the camshaft locking tool 303 - 530 and transfer it to
the B-Bank camshafts, aligning the shafts slightly as necessary.


24
.
Loosen the bolt which secures the sprocket to the camshaft.

25
.
Loosen the bolt which secures the VVT unit to the camshaft.
26. Remove the primary ch ain tensioner bolts.

27. R
emove the tensioner assembly.
1. Remove the tensioner.
2. Remove the tensioner back-plate.

28. R
emove the chain tensioner blade.
1. Remove the pivot bolt which secures the tensioner blade.
2. Remove the tensioner blade.
29. Reposition the VVT unit and exhaust camshaft sprocket
forward along the camshaft bosses and remove the chain from
the VVT unit and from th e crankshaft sprocket.

30 . R
emove the sprocket from the
crankshaft. To remove the B-
Bank sprocket, the A-Bank spro cket must be removed first.
31. Note the orientation of the spro cket relative to the sprocket
for the B-Bank drive (half a toot h out of line) and remove the
sprocket.

2. Fi
t the retaining / pivot bolt and tighten it to 12 - 16
Nm.

5. Refi
t the primary chain tensione
r assembly. Refer to Operation
12.65.55 in this Section.
U s
e a wedge 303 - 533 (or two if required) between the
primary chain tensioner and te nsioner blade, to take up
the slack in the chain.

6. Tigh te
n the exhaust camshaft
sprocket securing bolt.
1. Fit the chain tensioner tool 303 - 532 to the sprocket holes.
1. Apply force to the to
ol 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 sprock et securing bolt to 115 -
125 Nm.

7. Tigh te
n 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 115 - 125 Nm.
Re
move the chain tensioning
tool and the wedge(s).
8. Remove the camshaft locking tool 303 - 530 and transfer it to
the A-Bank camshafts, aligning the shafts slightly as necessary.

13. Tigh
ten the exhaust camshaft
sprocket securing bolt.
1. Fit the chain tensioner tool 303 - 532 to the sprocket holes.
1. Apply force to the to
ol 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 sprock et securing bolt to 115 -
125 Nm.

14 . Tigh
ten 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 115 - 125 Nm.
R e
move the chain tensioning
tool and the wedge(s).
15. Remove the camshaft locking tool 303 - 530.
16. Raise the vehicle on the ramp.
17. Remove the crankshaft setting tool 303 - 531.

18 . R
efit the crankshaft position sensor.
1. Fit the sensor to the fl ywheel housing and fit the
securing bolt. Tighten to 8 - 12 Nm.
2. Refit the access grommet to the housing.
19. Lower the ramp.
20. Fit new seals to the VVT bush carrier, A-Bank.
1. Fit the new sealing ring ( scarf jointed) to the carrier
bush groove.

2
. Fit a new O-ring to the carrier oil-way.

21
.
NOTE: Lubricate the seal (s carf jointed) and the bush.
Fit the VVT bush carrier to the cylinder block.
1. Fit the bush carrier assembly.
1. C
heck that the seals are in place and that the ring
dowels are engaged squa rely. Fully locate the
assembly as much as possible by hand pressure.
2
. Fit the three securing bolts. Tighten to 19 - 23 Nm.

22
.
Fit new seals to the VVT bush carrier, B-Bank.
1. Fit the new sealing ring (scarf jointed) to the carrier bush groove.
2. Fit a new O-ring to the carrier oil-way.

23
.
NOTE: Lubricate the seal (s carf jointed) and the bush.
Fit the VVT bush carrier to the cylinder block. 1. Fit the bush carrier assembly.
1. C
heck that the seals are in place and that the ring
dowels are engaged squa rely. Fully locate the
assembly as much as possible by hand pressure.
2
. Fit the two securing bolts and one nut. Tighten to 19
- 23 Nm.
24. Refit the Timing Cover. Refer to Operation 12.65.01 in this
Section.
25. Move the engine compartment cover from the service position
and connect the gas struts.
26. Remove the paint protection sheets and close the cover.
27. Connect the battery and fit the battery cover.


Re

fer to the Battery Reconnection Procedure 86.15.15.

Engine - Crankshaft Inner Sprocket3.2L NA V8 - AJ26
In-vehic
le Repair
Remov
a
l
S
p
ecial Tool(s)

Camshaft setting
3
03-
530

T
i
ming chain tensioning
303-532

Wedges, primary ch ain

303-533

Cranksha
ft setting
303-531
1. Open the engine compartment and fit paintwork protection
sheets.
2. Set the engine compartment cover to the service access
position.

3. Disc
onnect the batt
ery ground cable.
Re
move the battery cover.
4. Remove the Timing Cover. Re fer to Operation 12.65.01.
5. Raise the vehicle on a ramp.
6. Remove the crankshaft position sensor.
1. Remove the bolt which secures the crankshaft position sensor to the flywheel housing.

Remove the
sensor and allow
it to hang free under the
engine.
2. Remove the access grommet (for torque converter bolts) from the housing.
7. Install the damper securing bolt (old one) to the crankshaft,
hand-tight only.

8. R
otate the crankshaft until the triangular arrow indent on
the drive plate is visible thro ugh the access hole; confirm
that the timing flat on ea ch camshaft is uppermost.

9. Inst
all the crankshaft setting peg 303-531 to the crankshaft
position sensor location.
1. Install the crankshaft setting peg 303-531.
Position the crankshaft so that the settin
g peg engages
fully into the timing slot.
2. Install and tighten the bolt to secure the setting peg.
10. Remove the damper securing bolt from the crankshaft.
11. Lower the vehicle on the ramp.

12
.
Install the camshaft locking tool 303-530 to Bank 1
camshafts, aligning the shafts slightly as necessary.
13. Loosen the bolt which secures the sprocket to the exhaust
camshaft.