Range Rover. Manual — part 37
BMW DIESEL
39
REPAIR
5. Remove lower chain guide.
6. Remove Woodruff key from crankshaft.
7. Remove 8 bolts securing oil pump to cylinder
block.
8. Remove pump. Collect gasket.
Refit
9. Ensure mating faces are clean.
10. Position new oil pump/front cover gasket to
cylinder block.
11. Refit oil pump. Fit bolts, finger tight.
12. Fit tool LRT-12-116 over crankshaft. Tighten
centre screw by hand to centralise oil pump.
13. Tighten oil pump bolts to
22 Nm (16 lbf.ft)
14. Remove tool from crankshaft.
15. Fit woodruff key to crankshaft.
16. Fit lower chain guide.
17. Using a new gasket, position oil pick-up strainer.
Secure with bolts. Tighten to
10 Nm (7 lbf.ft)
18. Fit timing chains and sprockets.
See this
section.
19. Reconnect battery negative lead.
12
ENGINE
NEW RANGE ROVER
40
REPAIR
OIL PUMP AND OIL PRESSURE RELIEF VALVE -
OVERHAUL
Service repair no - 12.60.32
1. Remove oil pump.
See this section.
Oil pump
NOTE: Oil pump is only supplied as an
assembly but the following dimensional
checks checks may be carried out to
determine serviceability.
2.
If fitted : Remove 2 bolts securing oil pick-up
pipe, remove pipe.
3. Remove and discard seal.
4. Press flanged bush out from front of oil pump.
5. Make suitable alignment marks between cover
plate and pump housing.
6. Noting fitted position of special screw, remove 4
screws securing cover plate, remove plate.
BMW DIESEL
41
REPAIR
7. Make suitable alignment marks between inner
and outer rotors and pump housing.
8. Clean rotors and recess in pump housing, fit
rotors ensuring square identification marks face
towards cover plate and reference marks are
aligned.
9. Insert flanged bush into inner rotor with flange on
rotor side of pump.
10. Using feeler gauges, check clearance between
outer rotor to pump body and inner rotor to
flanged bush and compare with figures given:
Outer rotor to pump housing = 0.4 mm (0.02 in) -
maximum
Inner rotor to flanged bush = 0.065 mm (0.003
in) - maximum
11. Remove flanged bush, position a straight edge
across both rotors and the pump body.
12. Using feeler gauges inserted between straight
edge and on each side of inner and outer rotors,
measure axial clearance between rotors and
pump body and compare with figures given:
Outer rotor to pump body axial clearance =
0.070 mm (0.004 in) - maximum
Inner rotor to pump body axial clearance = 0.065
mm (0.003 in) - maximum
13. If any of the clearances obtained exceed figures
given, pump assembly must be replaced.
12
ENGINE
NEW RANGE ROVER
42
REPAIR
Oil pressure relief valve
14. Using a suitable mandrel, depress sleeve and
remove circlip.
WARNING: Sleeve is under strong spring
pressure, suitable eye protection must be
worn.
15. Gradually release spring pressure, remove
sleeve, spring and piston.
16. Remove and discard ’O’ ring.
17. Clean all components, check piston, sleeve and
relief valve bore for damage, scoring and signs
of wear.
18. Check relief valve spring free length:
Free length = 84.1 mm (3.3 in)
19. Renew relief valve as an assembly.
Oil pump and oil pressure relief valve -
assembling
20. Lubricate all components with engine oil.
21. Fit a new ’O’ ring to sleeve.
22. Insert piston, spring and sleeve into relief valve
bore, depress sleeve and fit circlip.
WARNING: Suitable eye protection must
be worn.
23. Check that circlip is correctly seated in groove.
24. Insert rotors into pump ensuring that square
identification marks are toward cover.
25. Fit cover plate ensuring reference marks are
aligned.
26. Fit 4 screws ensuring special screw is in its
original location, tighten screws to
20 Nm (15
lbf.ft).
27. Fit flanged bush ensuring that flange is on cover
plate side of pump.
28. Position new seal to oil pick-up pipe, fit pipe.
29. Fit 2 bolts and tighten to
10 Nm (7 lbf.ft).
30. Fit oil pump.
See this section.
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