Removal and Replacement

Timing Chain and Gears

Sump - Remove
1. Remove dipstick.







2. Remove 14 bolts and 3 nuts securing sump to cylinder block and timing cover.
3. Taking care not to damage sealing faces, carefully release sump from timing cover and cylinder block.
4. Remove sump.

Timing Cover - Remove

NOTE: Timing cover, oil pump and oil pressure relief valve are only supplied as an assembly.

1. Using assistance, restrain flywheel/drive plate and remove crankshaft pulley bolt; collect spacer washer - if fitted.
2. Remove crankshaft pulley.
3. Remove sump.







4. Remove nut and washers securing oil pick-up pipe to stud.







5. Remove 2 bolts securing oil pick-up pipe to oil pump cover, withdraw pipe from cover; remove and discard 'O' ring.
6. Remove oil pick-up pipe, recover spacer from stud.







7. Remove bolt securing camshaft sensor to timing cover, withdraw sensor; remove and discard 'O' ring.
8. Release harness connector from mounting bracket.







NOTE: New Range Rover timing cover illustrated.

9. Noting their fitted position, remove 9 bolts securing timing cover to cylinder block; remove cover; collect camshaft sensor harness mounting bracket.

NOTE: Timing cover is dowel located.

CAUTION: Do not attempt to remove oil pump drive gear at this stage.

10. Remove and discard gasket.
11. Remove and discard oil seal from timing cover.

Timing Gears - Remove







1. Restrain camshaft gear and remove bolt securing gear.







2. Remove timing chain and gears as an assembly.
3. Collect Woodruff key from crankshaft.

Timing Chain And Gears - Inspection
1. Thoroughly clean all components.
2. Inspect timing chain links and pins for wear.
3. Inspect timing chain gears for wear. Replace components as necessary.

Timing Gears - Refit
1. Clean gear locations on camshaft and crankshaft, fit Woodruff key to crankshaft.







2. Temporarily fit crankshaft gear and if necessary, turn crankshaft to bring timing mark on gear to the twelve o'clock position, remove gear.
3. Temporarily fit camshaft gear.
4. Turn camshaft until mark on camshaft sprocket is at the six o'clock position, remove gear without moving camshaft.







5. Position timing gears on work surface with timing marks aligned.
6. Fit timing chain around gears, keeping timing marks aligned.
7. Fit gear and chain assembly.

NOTE: Timing marks must be facing forwards.







8. Fit camshaft gear bolt, restrain camshaft gear and tighten bolt to 50 Nm (37 ft. lbs.).

Timing Cover - Refit

NOTE: Timing cover, oil pump and oil pressure relief valve are only supplied as an assembly.

1. Clean sealant from threads of timing cover bolts.
2. Clean all traces of gasket material from mating faces of timing cover and cylinder block.

CAUTION: Use a plastic scraper.

3. Clean oil seal location in timing cover.
4. Lubricate oil pump gears and oil seal recesses in timing cover with engine oil.
5. Apply Hylosil jointing compound to new timing cover gasket, position gasket to cylinder block.







6. Locate tool LRT-12-090 on timing cover and oil pump drive gear.
7. Position timing cover to cylinder block and at the same time, rotate tool LRT-12-090 until drive gear keyway is aligned with Woodruff key.
8. Fit timing cover to cylinder block.







NOTE: New Range Rover timing cover illustrated.

9. Position camshaft sensor harness mounting bracket to timing cover ensuring that bracket is positioned parallel to crankshaft centre line. Fit bolts and tighten in sequence shown to 22 Nm (16 ft. lbs.).

CAUTION: Do not fit coolant pump bolts at this stage.

10. Remove tool LRT-12-090.







11. Lubricate new timing cover oil seal with Shell Retinax LX grease ensuring that space between seal lips is filled with grease.

CAUTION: Do not use any other type of grease.







12. Fit timing cover oil seal using tool LRT-12-089.
13. Smear a new 'O' ring with engine oil and fit to oil pick-up pipe.
14. Position oil pick-up pipe spacer on number 4 main bearing cap stud.
15. Fit oil pick-up pipe ensuring that end of pipe is correctly inserted in oil pump body.
16. Fit oil pick-up pipe to oil pump body bolts and tighten to 8 Nm (6 ft. lbs.).
17. Fit washers and nut securing oil pick-up pipe to stud, tighten nut to 24 Nm (18 ft. lbs.).
18. Smear a new 'O' ring with engine oil and fit to camshaft sensor.
19. Insert camshaft sensor into timing cover, fit bolt and tighten to 8 Nm (6 ft. lbs.).
20. Position camshaft sensor harness connector on mounting bracket.
21. Fit sump.
22. Fit crankshaft pulley, fit bolt and spacer washer - if fitted; tighten bolt to 270 Nm (200 ft. lbs.).

NOTE: Crankshaft pulleys which incorporate a mud flinger can be fitted to all engines.

Sump - Refit
1. Remove all traces of old sealant from mating faces of cylinder block and sump.







2. Clean mating faces with suitable solvent and apply a bead of Hylosil Type 101 or 106 sealant to sump joint face as shown:
Bead width - areas A, B, C and D = 12 mm (0.5 in)
Bead width - remaining areas = 5 mm (0.20 in)
Bead length - areas A and B = 32 mm (1.23 in)
Bead length - areas C and D = 19 mm (0.75 in)

CAUTION: Do not spread sealant bead. Sump must be fitted immediately after applying sealant.

3. Fit sump, taking care not to damage sealant bead.







4. Fit sump bolts and nuts and working in sequence shown, tighten to 23 Nm (17 ft. lbs.).
5. Fit sump drain plug and tighten to 45 Nm (33 ft. lbs.).
6. Fit dipstick.