Land Rover V8 engine 4.0, 4.6 litre. Manual — part 13
ENGINE
34
OVERHAUL
Flywheel and starter ring gear - inspection
1. Inspect flywheel face for cracks, scores and
overheating. The flywheel can be refaced on
the clutch face providing thickness does not go
below minimum.
Flywheel minimum thickness A = 40.45 mm
(1.6 in)
2. Inspect starter ring gear for worn, chipped and
broken teeth.
CAUTION: Do not attempt to remove
reluctor ring.
3. Renew starter ring gear if necessary.
Starter ring gear - renew
1. Drill a 6 mm (0.250 in) diameter hole at root of
2 teeth.
CAUTION: Do not allow drill to enter
flywheel.
2. Secure flywheel in soft jawed vice.
3. Split ring gear using a cold chisel.
WARNING: Wear safety goggles and take
precautions against flying fragments when
splitting ring gear.
4. Remove flywheel from vice, remove old ring
gear, and place flywheel, clutch side down, on
a flat surface.
ENGINE
OVERHAUL
35
5. Heat new ring gear uniformly to between 170
°
and 175
°
C (340
°
and 350
°
F).
CAUTION: Do not exceed this
temperature.
WARNING: Take care when handling hot
ring gear.
6. Locate ring gear on flywheel with chamfered
inner diameter towards flywheel flange.
NOTE: If ring gear is chamfered on both
sides, it can be fitted either way round.
7. Press ring gear on to flywheel until it butts
against flywheel flange.
8. Allow flywheel to air cool.
Flywheel - refit
1. Fit flywheel and locate on 2 dowels.
2. Fit flywheel bolts.
3. Using assistance, restrain crankshaft and
tighten flywheel bolts to 80 Nm (59 lbf.ft).
ENGINE
36
OVERHAUL
DRIVE PLATE AND RING GEAR ASSEMBLY
Drive plate and ring gear assembly - remove - Up
to engine nos. 42D00593A and 46D00450A
1. Suitably identify each component to its fitted
position.
NOTE: 4.0 litre drive plate illustrated.
2. Remove 4 bolts securing drive plate assembly.
3. Remove buttress ring and drive plate
assembly.
NOTE: Drive plate assembly is dowel
located.
4. Remove 6 socket head cap screws securing
hub aligner to crankshaft, remove hub aligner
and selective shim; retain shim.
NOTE: Dowel located.
Drive plate and ring gear assembly - remove -
From engine nos. 42D00594A, 46D00451A and all
engines having serial no. prefixes 47D to 51D
1. Suitably identify each component to its fitted
position.
NOTE: 4.0 litre drive plate illustrated.
2. Remove 4 bolts securing buttress ring, drive
plate, spacer and ring gear assembly to hub
aligner.
3. Remove buttress ring, drive plate, spacer and
ring gear assembly.
NOTE: Ring gear assembly is dowel
located.
4. Remove 6 socket head cap screws securing
hub aligner to crankshaft, remove hub aligner.
NOTE: Dowel located.
ENGINE
OVERHAUL
37
Drive plate and ring gear - inspection
1. Inspect drive plate for cracks and distortion.
2. Renew drive plate if necessary.
3. Inspect ring gear for worn, chipped and broken
teeth.
4. Renew ring gear assembly if necessary.
Drive plate and ring gear assembly - refit - Up to
engine nos. 42D00593A and 46D00450A
CAUTION: To prevent distortion to drive
plate when bolted to torque converter,
drive plate setting height must be checked
as follows:
1. Fit original selective shim and hub aligner, fit
socket head cap screws and tighten to 85 Nm
(63 lbf.ft).
2. Fit drive plate assembly and buttress ring
ensuring that reference marks are aligned; fit
bolts and tighten to 45 Nm (33 lbf.ft).
CAUTION: If a new drive plate assembly is
being fitted, paint mark on plate must face
towards torque converter.
3. Check the setting height A.
Up to engine no. 42D00593A = 21.25 to
21.37 mm (0.83 to 0.84 in)
Up to engine no. 46D00450A = 7.69 to 7.81
mm (0.30 to 0.31 in)
4. If setting height is not as specified, remove
buttress ring, drive plate assembly, hub aligner
and selective shim.
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