ENGINE
DEFENDER
2.
Discard the valve springs and valve guide oil
seal. Remove carbon deposits from the valves
and combustion chambers and degrease all
parts ready for examination.
Examine the cylinder head for damage and
distortio. Inspect the valve seat inserts for
damage. Seat inserts that are beyond repair
and require renewal should be replaced by a
skilled specialist in this type of work.
4.
Examine each valve guide and valve stem for
wear and damage. Suspect guides should b e
checked by inserting a new valve into the
guide and
the valve lifted approximatly 8
clear of the seat the valve head should not
rock more than
head movement exceeds
(0.006 in). If the valve
(0.006 in)
the guide should be renewed.
Reface valve seat inserts
5.
inspect the valves for wear and damage. Valve
heads that are burnt and cracked should be
renewed. So should valves which are bent and
distorted. Insert the valve into a new guide and
check the side movement as described above
to determine the wear o n the valve stem.
8.
The special s et of hand tools recommended
for refacing include expandable pilots that fit
tightly into new or
guides to ensure that
the valve seat is concentric with the valve
guide. The refacing tool has tungsten carbide
cutters and can be used t o cut a new seat in
the insert. The valve seat cutter is numbered
Renew valve guides
the handle set
and the pilot
6.
Support the cylinder head, combustion
chamber uppermost on pieces of timber of
sufficient thickness to allow clearance for the
inlet or exhaust f or the valve guides t o be
driven out using special tool
9.
Loosely assemble t he pilot in the sequence
illustrated. Ensure that the chamfered e nd of
the expander is towards t he collet.
.
.
\
7.
Turn the cylinder head ove r so that the
combustion face is downwards. Lubricate the
new valve guides and using special service tool
LST 130 and depth gauge RO
press
the guide into position to the depth
determined
in).
the
74
| Categories | Land Rover, Land Rover Defender 110, Land Rover Defender 130, Land Rover Defender 90 |
|---|---|
| Tags | Land Rover |
| Model Year | 1990 |
| Download File |
|
| Document Type | Workshop Manual |
| Language | English |
| Product Name | Defender 90, 110, 130 Td5, Tdi, V8 |
| Product Brand | Land Rover |
| Document File Type | |
| Publisher | landrover.com |
| Wikipedia's Page | http://en.wikipedia.org/wiki/Land_Rover |
| Copyright | Attribution Non-commercial |
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