1998 JAGUAR X308 service

1.
Fit the camshaft to position in the cylinder head, with
the timing flats uppermost.
2. Fit the camshaft caps to their respective locations (0 to 4 from the front) and in the correct orientation
(arrow to front of engine).
3. Fit and tighten the cap securing bolts. Tighten evenly,
in stages, to 9 - 11 Nm.
3. Fit the camshaft locking tool 303 - 530 (fitted for following
operation) align the camshaft as necessary.
4. Refit the VVT Unit to the A-Bank. Refer to Operation 12.65.70.
This also includes the VVT Bu sh Carrier Assembly, Primary
Chain and Tensioner.
5. With the camshaft (303 - 530) and crankshaft (303 - 531)
setting tools removed, after the previous operation, adjust the
valve clearances on the inlet camshaft. refer to Operation
12.29.48.
6. Refit the Timing Cover. Re fer to Operation 12.65.01.
7. Move the engine compartment co ver from the service position
and connect the gas struts.
8. Remove the paint protection sheets and close the cover.
9. Connect the battery and fit the battery cover.
Re
fer to the Battery Reconnection Procedure 86.15.15.

Engine - Primary Timing Chain LH4.0L NA V8 - AJ27
In-vehicle Repair
Removal
Special Tool(s)

Camshaft setting
303 - 530

Timing chain tensioning
303 - 532

Wedges, primary chain
303 - 533

Crankshaft 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. Disconnect the batt ery ground cable.
Remove the battery cover.
4. Remove the Timing Co ver. Refer to Operation 12.65.01 in this
Section.
5. Remove the VVT bush carrier from the A-Bank.
1. Remove the three bolts which secure the carrier to the cylinder block.

1. Fit the new sealing ring (scarf jointed) to the carrier bush groove.
2. Fit a new O-ring to the carrier oil-way.

22. 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. Check 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.
23. Refit the Timing Cover. Refer to Operation 12.65.01 in this
Section.
24. Move the engine compartment cover from the service position
and connect the gas struts.
25. Remove the paint protection sheets and close the cover.
26. Connect the battery and fit the battery cover.
Refer to the Battery Reconnection Procedure 86.15.15.

Engine - Primary Timing Chain LH4.0L SC V8 - AJ26/3.2L NA V8 - AJ26,
3.2L/4.0L
In-vehicle Repair
Removal
Special Tool(s)

Camshaft setting
303-530

Timing chain tensioning
303-532

Wedges, primary chain
303-533

Crankshaft 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. Disconnect the batt ery ground cable.
Remove 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

14. Remove the camshaft locking tool 303-530.
15. Raise the vehicle on the ramp.
16. Remove the crankshaft setting tool 303-531.

17. Install the crankshaft position sensor.
1. Install the sensor to the flywheel housing and install
the securing bolt. Tighten to 6-8 Nm.
2. Install the access grommet to the housing.
18. Lower the ramp.
19. Install the Timing Cover. Refer to Operation 12.65.01.
20. Move the engine compartment cover from the service position
and connect the gas struts.
21. Remove the paint protection sheets and close the cover.
22. Connect the battery and in stall the battery cover.
Refer to the Battery Reconnection Procedure 86.15.15.

Engine - Primary Timing Chain RH
In-vehicle Repair
Removal
Special Tool(s)

Camshaft setting
303-530

Timing chain tensioning
303-532

Wedges, primary chain
303-533

Crankshaft 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. Disconnect the batt ery ground cable.
Remove 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.

Lubricate the seal (scarf jointed) and the bush.
1. Fit the bush carrier assembly.
Check that the seals are in pl ace and that the ring dowels
are engaged squarely. Fully locate the assembly as much
as possible by hand pressure.
2. Fit the three securing bolts. Tighten to 19-23 Nm.
15. Refit the Timing Cover. Refer to Operation 12.65.01 in this
Section.
16. Move the engine compartment cover from the service position
and connect the gas struts.
17. Remove the paint protection sheets and close the cover.
18. Connect the battery and fit the battery cover.
Refer to the Battery Reconnection Procedure in Section
414-01.

Engine - Primary Timing Chain Inner Guide LH
In-vehicle Repair
Removal
1. Open the engine compartment and fit paintwork protection
sheets.
2. Set the engine compartment cover to the service access
position.

3. Disconnect the batt ery ground cable.
Remove the battery cover.
4. Remove the Timing Co ver. Refer to Operation 12.65.01 in this
Section.
5. Remove the VVT Bush Carrier Assembly from the B-Bank.
Refer to Operation 12.65.52 in this Section.
6. Remove the Timing Chain Tens ioner - Primary, from the B-
Bank. Refer to Operation 12.65.55 in this Section.

7. Fit a Tie-Strap through the link s of the primary chain, just
above the crankshaft sprocket, to retain the chain to the
sprocket.

8. Rotate the inlet camshaft (and the exhaust camshaft), using a
spanner on the flats, to provide sufficient slack in the chain to
remove the chain tensioner blade.
9. Remove the chain tensioner blade.
1. Remove the pivot bolt which secures the tensioner blade.