Range Rover Classic. Manual — part 118
68
AIR SUSPENSION
2
ADJUSTMENT
AIR RESERVOIR - DRAIN
Service repair no - 60.50.24
Drain the reservoir every 40,000 Kms (24,000 miles) -
USA 30,000 miles.
1. Depressurise system.
See Depressurise
System
2. Clean area around reservoir drain plug.
3. Partially open drain plug, allow residual air to
escape.
4. Remove drain plug, NO water should be present.
If water is present, air drier unit must be
changed.
See Repair, Air Drier
5. Fit drain plug, checking sealing washer. Tighten
to
70 Nm.
6. Repressurise system.
AIR SPRINGS/HEIGHT SENSORS - INSPECT
Visually check air springs for cuts, abrasions and
stone damage to alloy end plates. Check security of
retention clips. Check height sensors for damage to
housing, operating links and cable assembly.
AIR HARNESS INSPECT
Check air harness (pipes) for damage and security
over its full length around vehicle.
LEAK TEST PROCEDURE
Service repair no - 60.50.35
If an air leak is suspected the use of a proprietary leak
detection spray is recommended. This procedure
should also be used where pneumatic components
have been disturbed.
The spray used must have a corrosion inhibitor, and
must not cause damage to paintwork, plastics, metals
and plastic pipes.
Recommended leak detection spray is GOTEC LDS.
This is available under part number STC1090.
1. Ensure system is fully pressurised.
2. Clean around area of suspected leak.
3. Using manufacturer’s instructions, spray around
all component joints and air springs, working
systematically until source of leak is found.
4. If a component eg: air spring, air drier is leaking,
rectify by fitting a new component.
5. If an air pipe connection is leaking cut 5 mm off
end of pipe. Fit new collet.
See Repair, Air
Pipe Connection Collet and ’O’ Rings
6. Reinflate system, carry out leak test.
AIR SUSPENSION
1
REPAIR
SUSPENSION COMPONENTS
CAUTION: It is essential to note that
repairs to other suspension and
transmission components are affected by
air suspension.
The air suspension must be DEPRESSURISED
before attempting to remove the following
components:
Front panhard rod Radius arms Front axle
Rear top and bottom links Rear axle
WARNING: Before inflation, the air spring
must be restricted by suspension and the
dampers fitted. Unrestricted movement of
a pressurised air spring will result in failure of the
assembly, causing component and possible
personal injury.
OPERATING SWITCHES AND BULBS
Service repair no - 60.50.17/18/19
NOTE: Each switch contains a warning
light bulb and an illumination bulb.
Remove
1. Release switch panel from its fitted position.
2. Disconnect multiplug from switch.
3. Depress locating tags of switch to remove switch
from panel.
4. Remove bulb by turning counter-clockwise:
A Warning
B Illumination
Refit
5. Fit new bulb and turn clockwise until fully
located.
6. Reverse removal procedure.
68
AIR SUSPENSION
2
REPAIR
DISCONNECT/CONNECT AIR PIPE
Remove
WARNING: Air suspension is pressurised
up to 10 bar. Dirt or grease must not enter
the system. Wear hand, ear and eye safety
standard protection when servicing system.
1. Depressurise complete system.
See
Adjustment, Depressurise System
CAUTION: Air pipes may be damaged if
not disconnected correctly, resulting in
possible leaks.
2. Clean air pipe connection with stiff brush and
soapy water. Peel back rubber boot.
3. Apply equal downward pressure on collet flange
at ’A’ as shown.
4. Pull air pipe firmly out through centre of collet.
5. Inspect disconnected end of air pipe for damage
and scores. Rectify as necessary.
NOTE: Air pipe may be trimmed if
sufficient straight pipe remains. Ensure
pipe end is cut square, without distortion
or frays to obtain air tight seal. Use service tool
LRT-60-002. Lightly chamfer pipe using a pencil
sharpener after cutting. DO NOT CUT PIPES
MORE THAN TWICE.
Refit
6. Push pipe firmly through two ’O’ rings until it
contacts base of housing as shown. Gently pull
pipe to ensure connection. The collet will retain
some movement while depressurised. Refit
rubber boot.
7. Pressurise system.
See Adjustment,
Depressurise System
8. Leak test connection.
See Adjustment, Leak
Test Procedure
AIR SUSPENSION
3
REPAIR
AIR PIPE CONNECTION COLLET AND ’O’ RINGS
Remove
WARNING: Air suspension is pressurised
up to 10 bar. Dirt or grease must not enter
the system. Wear hand, ear and eye safety
standard protection when servicing system.
1. Clean area with stiff brush and soapy water.
2. Depressurise system.
See Adjustment,
Depressurise System
3. Disconnect air pipe.
See Disconnect/Connect
Air Pipe
4. Remove collet.
5. Carefully pry out two ’O’ rings, using a smooth
plastic hook, eg: a crochet hook.
CAUTION: Avoid scratching inside wall of
housing, creating possible leak path.
Refit
6. Lightly grease new ’O’ rings.
7. Fit ’O’ rings into recess. Use a crochet hook to
avoid damage to ’O’ rings and housing.
8. Locate collet legs into housing, push fully home.
9. Inspect end of air pipe for damage and scores
rectify by trimming.
NOTE: Air pipe may be trimmed if
sufficient straight pipe remains. Ensure
pipe end is cut square, without distortion
or frays to obtain air tight seal. Use service tool
LRT-60-002. Lightly chamfer pipe using a pencil
sharpener after cutting. DO NOT CUT PIPES
MORE THAN TWICE.
10. Connect air pipe.
See Disconnect/Connect
Air Pipe
11. Pressurise system.
See Adjustment,
Depressurise System
12. Leak test connection.
See Adjustment, Leak
Test Procedure
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