303 JAGUAR X308 1998 2.G Workshop Manual

and chain, tighten the sprocket securing bolt to 115 -
125 Nm.

6. Tighten 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.
Remove the chain tensioning tool and the wedge(s).

7. Remove the camshaft locking tool 303 - 530 and transfer it to
the A-Bank camshafts, aligning the shafts slightly as necessary.

8. Fit the chain tensioning tool 303 - 532 to the exhaust camshaft
sprocket, A-Bank.
Reposition the sprocket (and the VVT unit) for the most
advantageous position for use of the tool.
Remove the tool.
9. Refit the primary timing chain, A-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.

10. 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.

11. Refit the primary chain tens ioner assembly. Refer to
Operation 12.65.54 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.

12. 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 and chain, tighten the sprock et securing bolt to 115 -
125 Nm.
13. Tighten 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.
Remove the chain tensioning tool and the wedge(s).

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

17. 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.
18. Lower the ramp.

19. Fit new seals to the VVT bush carrier, A-Bank.
1. Fit the new sealing ring ( scarf jointed) to the carrier
bush groove.
2. Fit a new O-ring to the carrier oil-way.

20. 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 three securing bolts. Tighten to 19 - 23 Nm.
21. Fit new seals to the VVT bush carrier, B-Bank.

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

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.
7. Install the damper securing bolt (old one) to the crankshaft,
hand-tight only.

8. 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.

9. 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.
10. Remove the damper securing bolt from the crankshaft.
11. Lower the vehicle on the ramp.

12. Install the camshaft locking tool 303-530 to Bank 1
camshafts, aligning the shafts slightly as necessary.
13. Loosen the bolt which secures the sprocket to the exhaust
camshaft.

18. Remove the chain from the cams haft sprocket and from the
crankshaft sprocket.

19. Remove the camshaft locking tool 303-530 and transfer it to
Bank 2 camshafts, aligning the shafts slightly as necessary.

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

21. Loosen the bolt which secures the sprocket to the intake
camshaft.
22. Remove the primary ch ain tensioner bolts.

Installation


23. Remove the tensioner assembly.
1. Remove the tensioner.
2. Remove the tensioner back-plate.

24. Remove the chain tensioner blade.
1. Remove the pivot bolt which secures the tensioner blade.
2. Remove the tensioner blade.
25. Reposition both camshaft sprockets forward along the
camshaft bosses and remove the chain from the intake
camshaft sprocket and from the crankshaft sprocket.

26. Note the orientation of the spro ckets relative to each other
(half a tooth out of line).
27. Clean and inspect all relevant components.
1. Install the chain tensioning tool 303-532 to the exhaust

camshaft sprocket, Bank 2.
Reposition the sprocket to the most advantageous position for use of the tool.
Remove the tool.

2. Install the primary timi ng chain, Bank 2.
1. Install the primary chain over the crankshaft sprocket and the intake camshaft sp rocket. There must be no
slack on the drive side of the primary chain and the
sprockets should not be rotated on the camshafts (or
the tensioning tool may not fit).
Slide the camshaft sprocket s fully rearwards onto the
respective camshafts.

3. Install the primary ch ain tensioner blade.
1. Position the tensioner blade to the cylinder block.
2. Install the retaining / pivo t bolt and tighten it to 12-
16 Nm.

4. Install the primary chain te nsioner assembly. Refer to
Operation 12.65.55.
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. Install the chain tensioner tool 303-532 to the sprocket holes.
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 and chain, tighten the sprock et securing bolt to 115-
125 Nm.

6. Tighten the intake camshaft sprocket 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, ti ghten the securing bolt to
115-125 Nm.
Remove the chain tensioning tool and the wedge(s).

7. Remove the camshaft locking t ool 303-530 and transfer it to
Bank 1 camshafts, aligning the shafts slightly as necessary.

8. Install the chain tensioning tool 303-532 to the exhaust
camshaft sprocket, Bank 1.
Reposition the sprockets to the most advantageous
position for use of the tool.
Remove the tool.
9. Install the primary timi ng chain, Bank 1.
1. Install the primary chain over the crankshaft sprocket and the intake camshaft sp rocket. There must be no
slack on the drive side of the primary chain and the
sprockets should not be rotated on the camshafts (or
the tensioning tool may not fit).

10. Install the primary ch ain tensioner blade.
1. Position the tensioner blade to the cylinder block.
2. Install the retaining / pivo t bolt and tighten it to 12-
16 Nm.

11. Install the primary chain te nsioner assembly. Refer to
Operation 12.65.54.
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.

12. Tighten the exhaust camshaft sprocket securing bolt.
1. Install the chain tensioner tool 303-532 to the sprocket holes.
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 and chain, tighten the sprock et securing bolt to 115-
125 Nm.
13. Tighten the intake camshaft sprocket 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, ti ghten the securing bolt to
115-125 Nm.
Remove the chain tensioning tool and the wedge(s).