Range Rover Classic. Manual — part 120
68
AIR SUSPENSION
8
REPAIR
HEIGHT SENSOR
Service repair no - 60.36.01 - Front
Service repair no - 64.36.01 - Rear
Remove
1. Disconnect battery negative lead.
2. Remove wheel.
3. Disconnect height sensor multiplug.
4. Remove height sensor lower link fixing.
CAUTION: Back height sensors have
longer lower link than the front sensors.
5. Remove height sensor fixings.
6. Remove height sensor.
Refit
7. Reverse removal instructions.
8. Recalibrate system.
See Adjustment, System
Calibration - Height Sensor Datum
9. Attain standard ride height.
PRESSURE RELIEF VALVE
Service repair no - 60.50.31
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.
Remove
1. Remove valve block.
See Valve Block
2. Clean around pressure relief valve with a stiff
brush and soapy water.
3. Remove pressure relief valve.
Refit
4. Coat threads of pressure relief valve with Loctite
572.
5. Fit valve. Tighten to
12 Nm.
6. Reverse removal procedure.
AIR SUSPENSION
9
REPAIR
COMPRESSOR INLET FILTER
Service repair no - 60.50.12
Change the inlet filter every 40,000 Kms (24,000
miles) - USA 30,000 miles.
NOTE: Compressor inlet filter is situated
adjacent to the fuel filler flap. Access is
gained by removing the closure plate
situated in the right hand side of load space.
Remove
1. Remove sub woofer, (if fitted).
See
ELECTRICAL, Repair, Subwoofer Box
2. Remove eight screws. Remove closure panel.
3. Remove inlet filter from mounting bracket.
4. Remove filter from pipe.
Refit
5. Fit new filter.
6. Reverse removal procedure.
AIR SUPPLY UNIT
Service repair no - 60.50.23
Mounted on the chassis this unit contains the
compressor, air drier and valve block. The unit must
be removed before removing these components.
WARNING: System 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.
Remove
1. Depressurise system.
See Adjustment,
Depressurise System
2. Disconnect battery negative lead.
3. Remove air supply unit side cover plate.
4. Disconnect multiplug.
5. Disconnect compressor inlet pipe, seal all
exposed ends.
6. Support air supply unit. Remove four mounting
bolts.
CAUTION: DO NOT allow unit to hang on
pipes or electrical leads.
7. Remove air supply assembly top cover plate.
68
AIR SUSPENSION
10
REPAIR
8. Clean all components. Identify air pipe
connections.
9. Disconnect air pipe connections.
See
Disconnect/Connect Air Pipe
Seal all exposed ends Disconnect remaining
multiplug.
10. Remove air pipes and wiring harness from
assembly.
11. Remove air supply unit from vehicle.
Refit
12. Reverse removal procedure. Tighten mounting
bolts to
24Nm.
13. Leak test all disturbed connections.
See
Adjustment, Leak Test Procedure
AIR DRIER
Service repair no - 60.50.09
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. Remove air supply unit.
See Air Supply Unit
2. Disconnect two air pipes from air drier.
See
Disconnect/Connect Air Pipe
3. Seal drier connections to prevent moisture
intake.
4. Remove fixings.
5. Remove drier.
Refit
6. Inspect air pipes. If damaged fit new pipes. DO
NOT ATTEMPT TO TRIM DRIER PIPES.
7. Reverse removal procedure. Tighten nuts to
12Nm.
8. Leak test connections.
See Adjustment, Leak
Test Procedure
AIR SUSPENSION
11
REPAIR
AIR COMPRESSOR
Service repair no - 60.50.10
Remove
WARNING: The air compressor assembly
becomes hot when running. Avoid
personal contact or allow to cool.
1. Remove air supply unit.
See Air Supply Unit
2. Remove compressor outlet pipe, seal all
exposed ends.
3. Remove four fixing nuts.
4. Remove compressor assembly.
Refit
5. Inspect compressor mountings, replace if
necessary.
6. Reverse removal procedure. Tighten nuts to
7Nm.
7. Check operation of compressor.
8. Leak test connections.
See Adjustment, Leak
Test Procedure
VALVE BLOCK
Service repair no - 60.50.11
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. Remove air supply assembly.
See Air Supply
Unit
2. Disconnect air pipes from valve block, seal all
pipe ends
See Disconnect/Connect Air Pipe
CAUTION: Air pipes must be refitted
correctly to avoid component damage.
3. Remove four fixing bolts.
4. Remove valve block assembly.
Refit
5. Reverse removal procedure.
6. Leak test connections.
See Adjustment, Leak
Test Procedure
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