1998 JAGUAR X308 camshaft

Engine - Crankshaft Outer
Sprocket
In-v
ehic
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 Co ver. Refer to Operation 12.65.01 in this
Section.
5. Remove the VVT bush carrier.
1. Remove the three bolts which secure the carrier to the cylinder block.

2
. Release the carrier from
the two ring dowels and
remove it.

6. R
emove the seals from the bush carrier.
1. Remove the sealing ring (scarf jointed) from the
carrier bush groove.
2. Remove the O-ring from the carrier oil-way recess.
7. Raise the vehicle on a ramp.

8. R
emove 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.
9. Fit the damper securing bolt (old one) to the crankshaft, hand-
tight only.

10
.
Rotate 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.
11. Fit the crankshaft setting peg 303 - 531 to the crankshaft
position sensor location.

1.
Fit the crankshaft setting peg 303 - 531.
Position the crankshaft so
that the setting
peg engages
fully into the timing slot.
2. Fit and tighten the bolt to secure the setting peg.
12. Remove the damper securing bolt from the crankshaft.
13. Lower the vehicle on the ramp.

14. F
it the camshaft locking tool 303 - 530 to the A-Bank
camshafts, aligning the shafts slightly as necessary.

15. L
oosen the bolt which secures
the sprocket to the camshaft.

16. Loosen
the bolt which secure
s VVT unit to the camshaft.
17. Remove the primary ch ain tensioner bolts.

The
teeth of the A-Bank and the B-Bank sprockets on the
crankshaft must be out of phas e with each other. If they
are in-phase after fitting, remo ve the sprocket, turn it on
its vertical axis and refit it.

2. Fi
t the chain tensioning tool 303 - 532 to the exhaust camshaft
sprocket.
Re po
sition the sprocket (and
the VVT unit) for the most
advantageous position for use of the tool.
R e
move the tool.

3. Re
fit the primary timing chain.
1. Fit the primary chain to position over the crankshaft sprocket and the VVT unit sprocket. There must be no
slack on the drive side of the primary chain and the
VVT unit must not be rotated on the camshaft.

4. Fit the primary chain tensioner
blade.
1. Position the tensioner blade to the cylinder block.
2. Fit the retaining / pivot bolt and tighten it to 12-16 Nm.
5. Refit the primary chain tensione r assembly. Refer to Operation
12.65.54 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
ten the exhaust camshaft
sprocket securing bolt.
1. Fit the chain tensioner tool 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 sprock et securing bolt to 115 -
125 Nm.

7. 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
emove the chain tensioning
tool and the wedge(s).
8. Remove the camshaft locking tool 303 - 530.
9. Raise the vehicle on the ramp.
10. Remove the crankshaft setting tool 303 - 531.

11
.
Refit 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.
12. Lower the ramp.
13. Fit new seals to the VVT bush carrier.
1. Fit the new sealing ring (scarf jointed) to the carrier bush groove.

E
ngine - Cylinder Head LH
In-ve
hicle Repair
Remova

l
CAU
TION: If a replacement cylinder head is to be installed to a
vehicle with variable camshaft timing (VCT) the cylinder head m ust have the
oil gallery blind rivet removed before installation.
Spe
cial Tool(s)

Cams

haft setting
303-530

Ti
ming chain tensioning
303-532

Wedges, prim
ary chain
303-533

Cr
ankshaft setting
303-531
1.
Open the engine compartment and install paintwork protection sheets.
2. Set the engine compartment cover to the service access position.

3.
Disconnect the battery ground cable.
Re

move the battery cover.
4. Remove the engine fron cover.For additional information, refer to: Engine
Front Cover (303-01 Engi
ne, In-vehicle Repair).
5. Remove the Inlet Manifold. Refer to Operation 30.15.01 in this Section. This operation includes depressurising the fuel system and removing the throttle
housing.
6. Disconnect the hoses and multi-plug from the coolant outlet pipe.
1. Release and reposition the hose clip, and disconnect the heater hose.
2. Disconnect the multi-plug from the temperature sensor.
3. Release and reposition the hose clip along the bypass hose.

1
. Remove the bolt which secures the crankshaft position sensor to
the flywheel housing.
R
emove the sensor and allow it to hang free under the engine.
2. Remove the access grommet (for torque converter bolts) from the housing.
14. Install the damper securing bolt (old one) to the crankshaft, hand-tight
only.

15
.
Rotate the crankshaft until the triangular arrow indent on the drive plate is
visible through the access hole; confirm that the timing flat on each
camshaft is uppermost.

16
.
Install the crankshaft setting peg 3 03 - 531 to the crankshaft position
sensor location.
1. Install the crankshaft setting peg 303 - 531.
Position
the crankshaft so that the setting peg engages fully into the
timing slot.
2. Install and tighten the bolt to secure the setting peg.
17. Remove the damper securing bolt from the crankshaft.
18. Lower the vehicle on the ramp.

19
.
Install the camshaft locking tool 303 - 530 to the B-Bank camshafts,
aligning the shafts slightly as necessary.

20
.
Loosen the bolt which secures the sprocket to the camshaft.

21. L
oosen the bolt which secures the VVT unit to the camshaft.
22. Remove the camshaft locking tool 303 - 530 (installed for previous
operation).

23 . R
emove the primary chain tensioner bolts.

24 . R
emove the tensioner assembly.
1. Remove the tensioner.
2. Remove the tens ioner back-plate.

25 . R
emove the primary chain tensioner blade.
1. Remove the pivot bolt which secures the tensioner blade.
2. Remove the tensioner blade.
26. Reposition the VVT unit along the cam journal to allow the chain to clear
the head casting.
Di s
connect the primary chain from the VVT unit and secure it to the
bypass hose retaining clip, using a Ty-strap.
27. Remove the VVT unit and exhaust camshaft sprocket.
1. Remove the securing bolt from both the VVT unit and the exhaust cam sprocket.
2. Remove the VVT unit, exhaust sprocket and secondary chain as an assembly (release the chain from the tensioner which is still
secured to the cylinder head).
Re
move the secondary chain from
the VVT unit and the sprocket.