DEFENDER
ENGINE
finishing of the joumals should be achieved by
using a static lapping stone with the crankshaft
rotating in a clockwise direction viewed from the
flywheel end of the crankshaft.
It is important to ensure that, when grinding, the
stone travels beyond the e dge of the joumal ' A to
avoid formation of a st ep 'B' as illustrated. Also care
must be taken not t o machine or damage the fillet
radii
It is vital to thoroughly wash the crankshaft after
machining to remove all traces of abrasive material,
ensuring that all oil galleries are clean.
Genuine Land Rover service standard size pistons
are supplied 0,025
for production
(0.001 in) oversize to allow
o n new engines. When
fitting new pistons to a standard size cylinder, the
bores must be honed to accomodate t he pistons
with the correct clearances. In addition Land Rover
pistons are available (0.020 and
and
0.040
in) oversize for fitting t o rebored cylinders.
Clearance limits for new standard size pistons in a
standard cylinder bore measured at right angles to
the gudgeon pin are in the data section. When
taking the following measurements the cylinder
block and pistons must be the same temperature to
ensure accuracy.
Pistons and connecting rods
4.
Using a suitable micrometer or vernier measure
the pistons at the b ottom of the skirt at right
angles t o the g udgeon pin.
The following checks relating to pistons and rings
must also b e carried out prior t o fitting new pistons
to rebored and sleeved cylinder blocks. Until it is
decided if new components are required all parts
must be kept in their related sets and the position
of each piston to its connecting rod should be
noted.
1.
Remove the piston rings and gudgeon pin
from each piston and detach the connecting
rod.
2.
Original pistons - Decarbonise and degrease all
components and carry out a visual examination
of the piston and rings and discard any which
are unserviceable. Pistons which appear
serviceable should b e subjected t o a more
detailed examination described under 'New
Pistons'.
New pistons - Original pistons fitted to new
engines at the
to
facilitate assembly. The grade letter o n the
piston crown should be ignored when
ordering new pistons.
53
| 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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