ENGINE
Crankshaft - remove
Crankshaft - inspection
1.
Remove flywheel or drive plate and ring gear
assembly.
1. Clean crankshaft and blow out oil passages.
2.
3.
4.
Remove timing cover.
Remove timing gears.
Remove big-end bearings.
2.
3.
Support crankshaft front and rear bearings on
vee blocks, and using a DTI, measure run-out
on centre main bearing.
Maximum permitted run-out = 0.08 mm.
If run-out exceeds permitted maximum,
crankshaft is unsuitable for regrinding and
should be renewed.
Measure each journal for overall wear and
ovality.
Main bearing journal diameter = 58.409 to
5.
Starting at centre main bearing and working
outwards, progressively slacken then remove
10
main bearing cap bolts.
58.422
mm
6.
7.
Remove 5 main bearing caps and bearing
shells, retain bearings with their caps.
Lift out crankshaft and rear oil seal. Remove
and discard oil seal.
Remove 5 bearing shells from cylinder block
and retain in their fitted order.
Remove and discard side seals from rear main
bearing cap.
Remove Woodruff key from crankshaft.
Maximum out of round = 0.040 mm.
Big-end bearing journal diameter = 50.800 to
50.812
mm
Maximum out of round = 0.040 mm.
If measurements exceed permitted maximum,
regrind or fit new crankshaft.
8.
9.
NOTE: Ovality checks should be made at
10.
120° intervals around each journal.
Crankshaft main bearings are available in
mm and 0.508 mm undersizes. When fitting
mm undersize bearings, centre main
0.254
0.508
bearing, which controls crankshaft end-float, has
thrust faces increased in thickness by 0.254 mm.
Therefore if 0.508 mm undersize bearings are
fitted, 0.127 mm must be machined off each
thrust face of centre main bearing journal to
maintain correct radius.
30
OVERHAUL
| Categories | Land Rover, Land Rover Discovery |
|---|---|
| Tags | Land Rover |
| Model Year | 1996 |
| Download File |
|
| Document Type | Workshop Manual |
| Language | English |
| Product Name | 3.5, 3.9 and 4.2 Litre V8 engines |
| Product Brand | Land Rover |
| Engine Manufacturer | Rover Group |
| Engine Motor Size | 3.5L, 3.9L, 4.2 Litre |
| Document File Type | |
| Publisher | landrover.com |
| Wikipedia's Page | http://en.wikipedia.org/wiki/Land_Rover |
| Copyright | Attribution Non-commercial |
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