timing JAGUAR X308 1998 2.G Repair Manual

Engine - Exhaust Camshaft Sprocket RH4.0L SC V8 - AJ26/3.2L NA V8 -
AJ26
In-vehicle Repair
Removal
Special Tool(s)

Camshaft setting
303-530

Crankshaft setting
303-531

Timing chain tensioning
303-532
1. Open the engine compartment and fit paintwork protection
sheets.

2. Disconnect the batt ery ground cable.
Remove the battery cover.
3. Remove the Cam Cover from Ba nk 1. Refer to Operation
12.29.44.
4. Raise the vehicle on a ramp.
5. 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.

6. 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.

7. Install 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 setting peg engages
fully into the timing slot.
2. Install and tighten the bolt to secure the setting peg.
8. Lower the vehicle on the ramp.

9. Install the camshaft locking tool 303-530 to Bank 1 camshafts,
aligning the shafts sl ightly as necessary.
10. CAUTION: Use a length of steel strip that will not fall
into the timing cover.
Protect the upper face of the ti ming cover from scratches, when

Installation

removing the bolt which secures the sprocket. 1. Place a flat piece of stee l strip along the timing cover
horizontal jointing face, adjacent to the exhaust
camshaft sprocket.
2. Secure the steel strip in place with adhesive tape.

11. A ball-ended hexagon drive bit is required to remove the
sprocket securing bolt. A suitable tool is available from Snap On as (FABLM10E) Long Series 10mm AF.

12. Remove the bolt which secures the sprocket to the exhaust
camshaft.
Move the sprocket forward from the camshaft boss.

13. Remove the secondary chain tensioner. The tensioner piston
cannot be pushed into the body with the assembly in position.
1. Remove the two bolts which secure the tensioner.
Lift the tensioner, sprocket (release it fully from the
camshaft) and ch ain assembly.
2. Remove the tensioner rearward from between the chain.
14. Remove the sprocket and leav e the chain resting on the
cylinder head.
15. Clean and inspect all relevant components.
1. Install the sprocket to the secondary chain.
1. With the sprocket installe d to the chain, temporarily
position (do not install the securing bolt) the sprocket
onto the camshaft.
2. Adjust the position of the sprocket within the chain to

Whilst applying the opposing force to the sprocket and
chain, tighten the sprocket securing bolt to 115-125 Nm.
Remove the chain tensioning tool.
6. Remove the tape and steel stri p from the timing cover upper
face. Wipe any residue of tape from the joint face.
7. Remove the camshaft locking tool.
8. Install the Cam Cover to Bank 1. Refer to Operation 12.29.44.
9. Raise the vehicle on the ramp.
10. Remove the crankshaft setting tool 303-531.

11. Install the crankshaft position sensor.
1. Install the sensor to the flywheel housing and fit the
securing bolt. Tighten to 8-12 Nm.
2. Install the access grommet to the housing.
12. Lower the ramp.
13. Remove the paint protection sheets and close the engine
compartment cover.
14. Connect the battery and in stall the battery cover.
Refer to the Battery Reconnection Procedure 86.15.15.

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.