ENGINE
Camshaft and tappets - refit
Piston rings - inspection
1.
2.
Lubricate camshaft journals with clean engine
oil and carefully insert camshaft into cylinder
block.
Immerse tappets in clean engine oil. Before
fitting, pump the inner sleeve of tappet several
times using a pushrod, to prime tappet and
reduce tappet noise when engine is first
started.
1. Temporarily fit new compression rings to
piston.
NOTE: The ring marked ’TOP’ must be
fitted, with marking uppermost, into
second groove. The chrome ring fits into
top groove and can be fitted either way round.
3.
Lubricate tappet bores with clean engine oil
and fit tappets in removed order.
NOTE: Some tappet noise may be evident
on initial start-up. If necessary, run the
engine at 2500 rev/min for a few minutes
until noise ceases.
4.
5.
Fit timing chain and gears.
Fit rocker shaft assemblies.
2.
Check compression ring to groove clearance:
Top compression ring A = 0.05 to 0.10 mm.
2nd compression ring B = 0.05 to 0.10 mm.
PISTONS, CONNECTING RODS, PISTON RINGS
AND CYLINDER BORES
Pistons and connecting rods - remove
1.
2.
3.
Remove cylinder head(s).
Remove big-end bearings.
Remove carbon ridge from top of each cylinder
bore.
4.
5.
6.
7.
Suitably identify each piston to its respective
cylinder bore.
Push connecting rod and piston assembly to
top of cylinder bore and withdraw assembly.
Remove plastic tubing from connecting rod
bolts.
3.
4.
Insert new piston ring into relevant cylinder,
held square to bore with piston, and check ring
gaps.
Top compression ring = 0.44 to 0.57 mm.
2nd compression ring = 0.44 to 0.57 mm.
Oil control ring rails = 0.38 to 1.40 mm.
Use a fine-cut flat file to increase gap if
required. Select a new piston ring if gap
exceeds limit.
Repeat above procedure for remaining pistons.
Piston rings - remove
1.
2.
Using a suitable piston ring expander, remove
piston rings.
Remove carbon from piston ring grooves.
NOTE: Use an old broken piston ring with
a squared off end.
CAUTION: Do not use a wire brush.
OVERHAUL
21
| 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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