1998 JAGUAR X308 camshaft

Engine - Primary Timing Chain Inner Guide RH
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 A-Bank.
Refer to Operation 12.65.51 in this Section.
6. Remove the Timing Chain Tens ioner - Primary, from the A-
Bank. Refer to Operation 12.65.54 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 guide.
9. Remove the chain guide.
1. Remove the bolt which secures the chain guide.
2. Note the orientation of the chain guide and remove it

Installation



from the upper retaining pin.
10. Clean and inspect all relevant components.

1. Fit the chain guide.
The chain guide must be fitted so that the slotted hole is
towards the top, and the raised shoulder to the cylinder
block.
1. Fit the chain guide to the block and locate it onto the upper retaining pin.
2. Fit the retaining bolt an d tighten it to 10-14 Nm.
2. Remove the Tie-Stra p from the chain.
3. Refit the Timing Chain Tensioner - Primary. The camshafts may
need to be turned slightly to pr ovide slack in the chain, on the
tensioner side. Refer to Operation 12.65.54 in this Section.
4. Refit the VVT Bush Carrier As sembly. Refer to Operation
12.65.51 in this Section.
5. Refit the Timing Cover. Refer to Operation 12.65.01 in this
Section.
6. Move the engine compartment co ver from the service position
and connect the gas struts.
7. Remove the paint protection sheets and close the cover.
8. Connect the battery and fit the battery cover.
Refer to the Battery Reconnection Procedure 86.15.15.

Engine - Primary Timing Chain Outer 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 guide.
9. Remove the chain guide.
1. Remove the bolt which secures the chain guide.
2. Note the orientation of the chain guide and remove it

Installation



from the upper retaining pin.
10. Clean and inspect all relevant components.

1. Fit the chain guide.
The chain guide must be fitted so that the slotted hole is
towards the top, and the raised shoulder to the cylinder
block.
1. Fit the chain guide to the block and locate it onto the upper retaining pin.
2. Fit the retaining bolt an d tighten it to 10-14 Nm.
2. Remove the Tie-Stra p from the chain.
3. Refit the Timing Chain Tensioner - Primary. The camshafts may
need to be turned slightly to pr ovide slack in the chain, on the
tensioner side. Refer to Operation 12.65.55 in this Section.
4. Refit the VVT Bush Carrier As sembly. Refer to Operation
12.65.52 in this Section.
5. Refit the Timing Cover. Refer to Operation 12.65.01 in this
Section.
6. Move the engine compartment co ver from the service position
and connect the gas struts.
7. Remove the paint protection sheets and close the cover.
8. Connect the battery and fit the battery cover.
Refer to the Battery Reconnection Procedure 86.15.15.

Engine - Primary Timing Chain Outer Guide RH
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 A-Bank.
Refer to Operation 12.65.51 in this Section.
6. Remove the Timing Chain Tens ioner - Primary, from the A-
Bank. Refer to Operation 12.65.54 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 guide.
9. Remove the chain tensioner blade.
1. Remove the pivot bolt which secures the tensioner blade.

Installation



2. Remove the tensioner blade.
10. Clean and inspect all relevant components.

1. Fit the 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.
2. Remove the Tie-Stra p from the chain.
3. Refit the Timing Chain Tensioner - Primary. The camshafts may
need to be turned slightly to pr ovide slack in the chain, on the
tensioner side. Refer to Operation 12.65.54 in this Section.
4. Refit the VVT Bush Carrier As sembly. Refer to Operation
12.65.51 in this Section.
5. Refit the Timing Cover. Refer to Operation 12.65.01 in this
Section.
6. Move the engine compartment co ver from the service position
and connect the gas struts.
7. Remove the paint protection sheets and close the cover.
8. Connect the battery and fit the battery cover.
Refer to the Battery Reconnection Procedure 86.15.15.

Engine - Secondary Timing Chain LH
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 Variable Valve Ti ming Bush Carrier Assembly.
Refer to Operation 12.65.52 in this Section
6. Raise the vehicle on a ramp.
7. 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.
8. Fit the damper securing bolt (old one) to the crankshaft, hand-
tight only.

9. 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.

10. 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.
11. Remove the damper securing bolt from the crankshaft.
12. Lower the vehicle on the ramp.

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