Land Rover Defender 90 Workshop 2nd Edition Nas Rover Manual

COOLING SYSTEM
1
SPECIFICATIONS, TORQUE TORQUE VALUES
Nm lbf ft
Oil cooler pipes 30................................................................ 22
Radiator filler plug (plastic) 6............................................... 4.5 

MANIFOLD AND EXHAUST SYSTEM
1
DESCRIPTION AND OPERATION CATALYTIC CONVERTERS - V8i
Description
Catalytic converters which form part of the engine
emission control system, are designed to clean the
exhaust gases, by chemically converting pollutant
elements in the exhaust to gases less harmfull to the
environment.
1.Catalysts
2.Oxygen sensors
The front section of the exhaust system from each
cylinder bank contain the ceramic elements of the
catalytic converters. The oxygen sensors, which
transmit...

MANIFOLD AND EXHAUST SYSTEM
1
REPAIR INTERMEDIATE PIPE
Service repair no - 30.10.11
Remove
1.Raise vehicle on ramp [hoist].
2.Release intermediate pipe from mounting
rubber.
3.Remove 2 nuts securing intermediate pipe to tail
pipe.
4.Remove 2 nuts securing intermediate pipe to
front pipe.
5.Release intermediate pipe from front and tail
pipes and remove.
Refit
6.Fit intermediate pipe to front and tail pipes.
7.Secure intermediate pipe to mounting rubber.
8.Fit and tighten nuts securing intermediate pipe...

MANIFOLD AND EXHAUST SYSTEM
1
SPECIFICATIONS, TORQUE TORQUE VALUES
MANIFOLDS AND EXHAUSTS - V8i
Nm lbf ft
Inlet manifold to cylinder head 38......................................... 28
Exhaust manifold to cylinder head 20................................... 15
Exhaust front pipe to manifold 45.......................................... 33
Exhaust front pipe to intermediate pipe 30............................ 22
Exhaust intermediate pipe to rear pipe 30............................ 22 

TRANSFER GEARBOX
1
DESCRIPTION AND OPERATION LT230Q TRANSFER GEARBOX
Description
The LT230Q transfer gearbox is a permanent 4 wheel
drive, two speed ratio reducing gearbox, incorporating
high and low range outputs with mechanically lockable
centre differential (diff-lock). High/low range and
diff-lock selection are made via a single lever located
forward of the main gear lever.
The transfer gearbox is mounted at the rear of the
main gearbox, the mainshaft of which extends into the
transfer casing. A...

41TRANSFER GEARBOX
2
DESCRIPTION AND OPERATION The diff-lock should only be engaged during severe
off-road conditions and should be disengaged as soon
as conditions permit.
A shiftlock device, used as a park facility, is fitted and
prevents accidental gear disengagement when the
ignition is switched off. An audible neutral alarm is
also fitted to alert the driver, when parking, to move
the gear lever to the high or low position. 

TRANSFER GEARBOX
1
FAULT DIAGNOSIS LT230Q TRANSFER GEARBOX - OIL SEAL
LOCATIONS
1.Input seal.
2.Cover plate joints.
3.Front output seal.
4.Front and rear housing joint faces.5.Rear output seal.
6.Power take off cover plate joint.
7.Bearing plate joint. 

41TRANSFER GEARBOX
2
FAULT DIAGNOSIS OIL LEAKS
Verify that oil leak is from transfer box and not main
gearbox before proceeding with checks.
Prior to road test
1.Check oil level in transfer box is correct.
2.Check tightness of level and drain plugs.
3.Check breather system for blockage. To validate
system pipe must be removed, inspected,
rectified as necessary and refitted.
4.Remove all traces of oil from exterior of transfer
box.
Take vehicle for short road test.
1.Identify source of leaks and rectify...

TRANSFER GEARBOX
1
REPAIR LT230Q TRANSFER GEARBOX
Service repair no - 41.20.25/99
Remove
The transfer gearbox should be removed from
underneath the vehicle, using a hydraulic hoist and
adaptor plateLRT-99-010.
WARNING: Where use of a transmission
hoist is necessary, it is absolutely
essential to follow the manufacturers
instructions to ensure safe and effective use of
the equipment.
1.Position vehicle on a ramp [hoist].
2.Select LOW range gear and leave vehicle in
neutral.
3.Disconnect battery negative...

41TRANSFER GEARBOX
2
REPAIR
9.Remove split [cotter] pin and clevis pin securing
handbrake cable to lever.
10.Remove 2 screws securing fan cowl to upper
retaining brackets.
11.Release 2 clips securing upper fan cowl.
12.Remove upper fan cowl.
13.Raise ramp [hoist].
14.Drain transfer gearbox oil.
See SECTION 10,
Maintenance, under vehicle maintenance
15.Remove exhaust front pipe.See EMISSION
CONTROL, Repair, front pipe/catalytic
converter
16.Remove 2 nuts securing intermediate pipe to tail
pipe.
17.Release...