DEFENDER
ENGINE
5
6
. Lift-out the crankshaft either by hand or hoist.
If a hoist is used be sure to insert adequate
protection between the sling and joumals to
avoid damage.
. Remove the mainbearing upper shells from the
cylinder block.
Remove the two thrust washers from each side
of the centre bearing location.
Remove the four cylinder lubrication, jet tubes.
Cylinder bores
Measure the cylinder bores for ovality, taper
and general wear, using any suitable
equipment. However, an inside micrometer is
best for checking ovality and a cylinder gauge
for taper. Check the ovality of each b ore by
taking measurement at the t op of the cylinder
just below the ridge at two points diametrically
opposite.
7.
8.
5. The difference between the
two figures is the
CYLINDER BLOCK INSPECTION AND OVERHAUL
ovality at the t op of the bore. Similar
Inspection
measurements should be made approximately
50
bore so that t he overall ovality may be
determined. The taper of each cylinder is
determined by taking measurements at the t op
and bottom of each bore at right angles to the
gudgeon pin line, the difference between the
n
two measurements is the taper.
(2.0 ins) up from the bottom of the
Degrease the cylinder block and carry out a
thorough visual examination checking for
cracks and damage. To check each main
bearing cap and its location on the cylinder
block, fit the bearing caps without the bearing
shells.
Fit the bolts and tighten to the correct torque,
then remove o ne bolt from each bearing cap
and check with a feeler gauge that no
clearance exists at the joint face as illustrated.
A clearance indicates either a bent bolt,
damaged dowl, distortion of the caps o r block,
or that the c ap has been filed or machined in
an attempt t o reduce any clearance d ue to
wear in the bearings. Main bearing caps are
not available separately from the cylinder block
therefore any clearance should be investigated
and rectified or the block renewed.
To establish maximum overall bore wear, take
measurements at as many points as possible
down the bores at right angles t o the gudgeon
pin line. The largest recorded figure is the
maximum wear and should be compared with
the original diameter of the cylinder bore.
Maximum permissible ovality
0,127
(0.005 in).
Maximum permissible taper
0,254
(0.010 in).
Maximum permissible overall wear
0,177 (0.007 in).
51
| 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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