Defender (1999-2002). Manual — part 41
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ENGINE
21
OVERHAUL
7. Using sequence shown, tighten sump bolts to 25
Nm (18 lbf.ft) .
8. Fit new centrifuge oil drain pipe gasket.
CAUTION: Gasket must be fitted dry.
9. Fit centrifuge oil drain pipe, fit bolts and tighten
to 10 Nm (7 lbf.ft) .
SEAL - CRANKSHAFT - REAR
Service repair no - 12.21.20.01
Remove
1. Remove flywheel. See Repair.
2. Remove sump gasket. See this Section.
3. Remove 5 bolts securing crankshaft rear oil seal
housing to cylinder block.
4. Remove and discard crankshaft rear oil seal and
housing.
NOTE: Dowel located.
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12
ENGINE
22
OVERHAUL
Refit
1. Clean crankshaft rear oil seal housing mating
face on cylinder block, ensure bolt and dowel
holes are clean and dry. Remove all traces of oil
from oil seal running surface on crankshaft.
2. Position seal protector LRT-12-061 over
crankshaft boss. Fit new seal and housing,
remove LRT-12-061.
CAUTION: Oil seal must be fitted dry.
3. Fit oil seal housing bolts and using sequence
shown, tighten to 9 Nm (7 lbf.ft) .
4. Fit sump gasket. See this Section.
5. Fit flywheel. See Repair.
STARTER RING GEAR
Service repair no - 12.53.19
Remove.
1. Remove flywheel. See Repair.
2. Drill a 3 mm (0.12 in) diameter hole at root of 2
teeth.
3. Apply a cold chisel to root of teeth, break ring
gear and remove from flywheel.
WARNING: SUITABLE EYE PROTECTION
MUST BE WORN.
Refit
1. Heat ring gear evenly to 350
°
C, indicated by
light blue colour.
2. Locate ring gear on flywheel and press on to
flange.
WARNING: Handle hot ring gear with care.
3. Allow ring gear to air cool.
4. Fit flywheel. See Repair.
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ENGINE
23
OVERHAUL
PUMP - OIL
Service repair no - 12.60.26.02
Remove
1. Remove sump gasket. See this Section.
2. Remove bolt securing oil pump drive sprocket.
3. Release drive sprocket from chain, remove
sprocket.
4. Remove 3 Torx screws securing oil pick-up
strainer, remove strainer.
5. Remove and discard ’O’ ring.
6. Using sequence shown, remove and discard 22
bolts securing oil pump and stiffener plate
assembly to cylinder block.
7. Remove oil pump and stiffener plate assembly.
NOTE: Dowel located.
8. Remove and discard ’O’ ring from oil pump
housing outlet.
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12
ENGINE
24
OVERHAUL
Inspection
CAUTION: Inspection/overhaul procedures
for the oil pump are limited to carrying out
dimensional checks. In the event of wear
or damage being found, a replacement pump and
stiffener plate assembly must be fitted.
Oil pump
1. Remove and discard 5 screws securing cover to
oil pump, remove cover.
2. Using a felt tipped pen, make suitable alignment
marks between inner and outer rotors and pump
body.
3. Remove inner and outer rotors.
4. Check rotors, cover and pump body for signs of
scoring and wear.
5. Fit rotors ensuring that reference marks are
aligned and identification mark on inner rotor is
facing outwards.
6. Using feeler gauges, check pump body to outer
rotor clearance:
Pump body to outer rotor clearance = 0.295
to 0.375 mm (0.012 to 0.015 in)
7. Using feeler gauges, check clearance of inner to
outer rotor in 2 positions, both clearances must
be within limit given:
Inner to outer rotor clearance = 0.13 mm (0.05
in)
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