1998 JAGUAR X308 Timing chain

Engine - Intake Camshaft LH
In-vehicle Repair
Removal
Installation
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. Remove the VVT Unit from the B-Bank. Refer to Operation
12.65.71. This also includes the VVT Bush Carrier Assembly,
Primary Chain and Tensioner.
6. Remove the camshaft locking tool 303 - 530 (fitted for
previous operation).

7. Remove the camshaft.
1. Remove the bolts which secure the camshaft caps; loosen them evenly, in stages.
2. Remove the camshaft caps. Note their orientation and
markings - each is marked with its position (a
number) and orientation (an arrow).
3. Remove the camshaft from the engine.
8. Clean and inspect all relevant components.

1. Apply oil (EP-90) to the camsha ft and bearing surfaces, as
follows:
To the upper face of each be aring surface (two places) in
the cylinder head.
To the upper face of each be aring surface (two places) in
each bearing cap.
On the cam lobes ONLY, not on the base circle area.
2. Refit the camshaft.

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 12.65.71.
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.
Refer to the Battery Reconnection Procedure 86.15.15.

Engine - Intake Camshaft RH
In-vehicle Repair
Removal
Installation
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. Remove the VVT Unit from the A-Bank. Refer to Operation
12.65.70. This also includes the VVT Bush Carrier Assembly,
Primary Chain and Tensioner.
6. Remove the camshaft locking tool 303 - 530 (fitted for
previous operation).

7. Remove the camshaft.
1. Remove the bolts which secure the camshaft caps; loosen them evenly, in stages.
2. Remove the camshaft caps. Note their orientation and
markings - each is marked with its position (a
number) and orientation (an arrow).
3. Remove the camshaft from the engine.
8. Clean and inspect all relevant components.

1. Apply oil (EP-90) to the camsha ft and bearing surfaces, as
follows:
To the upper face of each be aring surface (two places) in
the cylinder head.
To the upper face of each be aring surface (two places) in
each bearing cap.
On the cam lobes ONLY, not on the base circle area.
2. Refit the camshaft.

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.

inside of the pump gear engage correctly with the
mating flats on the crankshaft.
3. Fit the securing bolts and tighten to 11 - 13 Nm.
2. Refit both sprockets to the crankshaft, both primary timing
chains, the timing cover and al l associated components. Refer
to Operation 12.65.76.
3. Refit the engine compartment cover (bonnet). Refer to
Operation 76.16.01.
4. Refer to the Battery Reconnection Procedure 86.15.15.

the block face; ensure that the drive flats on the inside
of the pump gear engage correctly with the mating
flats on the crankshaft.
3. Fit the securing bolts and tighten to 11 - 13 Nm.
2. Refit both sprockets to the crankshaft, both primary timing
chains, the timing cover and al l associated components. Refer
to Operation 12.65.76 (SC).
3. Refit the engine compartment cover (bonnet). Refer to
Operation 76.16.01 (SC).
4. Refer 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.

sprocket, B-Bank.
Reposition the sprocket (and the VVT unit) for the most
advantageous position for use of the tool.
Remove the tool.

2. Refit the primary timing chain, B-Bank.
1. Fit the primary chain 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 rotate d on the camshaft.
Slide the VVT and exhaust sprocket fully rearwards onto
the respective camshafts.

3. 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.

4. Refit the primary chain tensione r assembly. Refer to Operation
12.65.55 in this Section.
Use 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.
5. Tighten the exhaust camshaft sprocket securing bolt.
1. Fit the chain tensioner tool 303 - 532 to the sprocket holes.
1. Apply 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