Discovery 2. Manual — part 204

REAR SUSPENSION

REPAIRS

64-35

Sensor - height - SLS

$% 64.36.01

WARNING: Ensure the air suspension system is
made safe before commencing work. Otherwise
the chassis may lower onto the bump stops
during repair.

Remove

1. Raise rear of vehicle.

WARNING: Do not work on or under a
vehicle supported only by a jack. Always
support the vehicle on safety stands.

2. Disconnect height sensor multiplug.
3. Remove bolt securing height sensor link to

radius arm.

4. Remove 2 bolts securing height sensor to

chassis and remove height sensor.

Refit

1. Position height sensor to chassis and tighten

bolts to 6 Nm (4.4 lbf.ft).

2. Position height sensor link to radius arm and

tighten bolt to 25 Nm (18 lbf.ft).

3. Connect height sensor multiplug.
4. Remove stand(s) and lower vehicle.
5. Use TestBook to calibrate height sensor.

Compressor unit - air - SLS

$% 64.50.10

WARNING: Ensure the air suspension system is
made safe before commencing work. Otherwise
the chassis may lower onto the bump stops
during repair.

Remove

1. Using TestBook, depressurise SLS air system.

After depressurisation, approximately 1 bar
(15 lbf.in

2

) air pressure remains in the

system.

2. Release 2 fasteners and remove air

compressor unit cover.

3. Remove 2 bolts securing air compressor unit to

chassis. Release unit and lower onto blocks to
support the weight.

4. Noting their fitted position, disconnect pipes

from air valves.

CAUTION: Always fit plugs to open
connections to prevent contamination.

REAR SUSPENSION

64-36

REPAIRS

5. Disconnect inlet and exhaust pipes.

CAUTION: Always fit plugs to open
connections to prevent contamination.

6. Disconnect multiplugs from air valves, exhaust

valve and compressor.

7. Release and disconnect compressor multiplug

from casing.

8. Remove air compressor unit from vehicle.

9. Release supply/exhaust pipe.

CAUTION: Always fit plugs to open
connections to prevent contamination.

10. Remove 3 bolts securing compressor to

casing. Remove compressor and collect
mounting washers.

Refit

1. Locate mounting washers and position

compressor in casing.

2. Apply sealant, Part No. STC 50552 to

compressor securing bolts. Fit bolts and tighten
to 7 Nm (5.2 lbf.ft).

3. Connect compressor multiplug to casing.
4. Connect supply/exhaust pipe.
5. Position air compressor unit on support block,

connect inlet and exhaust pipes.

6. Connect multiplugs to air valves, exhaust valve

and compressor.

7. Connect pipes to air valves.
8. Position air compressor unit to chassis and

engage casing in retaining lugs. Fit air
compressor unit securing bolts and tighten to
25 Nm (18 lbf.ft).

9. Ensure pipes are located in cut outs in casing.

10. Position air compressor unit cover and lock

fasteners.

11. Repressurise SLS air system using TestBook.

WARNING: Eye protection must be worn
during the repressurisation procedure.

REAR SUSPENSION

REPAIRS

64-37

Filter - intake - SLS

$% 64.50.12

Remove

1. Remove LH tail lamp.

+

LIGHTING, REPAIRS, Lamp - tail.

2. Disconnect filter from retaining peg.
3. Disconnect quick release connection and

remove filter assembly.

Refit

1. Position filter assembly and connect quick

release connection.

2. Secure filter retaining peg.
3. Fit LH tail lamp.

+

LIGHTING, REPAIRS, Lamp - tail.

Switch - ride height

$% 64.50.45

Remove

1. Carefully remove switch.
2. Disconnect multiplug from switch.
3. Remove switch.

Refit

1. Connect multiplug switch.
2. Position switch and push to secure.

REAR SUSPENSION

64-38

REPAIRS

Air valve - SLS

$% 64.50.47

WARNING: Ensure the air suspension system is
made safe before commencing work. Otherwise
the chassis may lower onto the bump stops
during repair.

Remove

1. Using TestBook, depressurise SLS air system.

After depressurisation, approximately 1 bar
(15 lbf.in

2

) air pressure remains in the

system.

2. Release 2 fasteners and remove air

compressor unit cover.

3. Noting their fitted position, disconnect pipes

from air valves and discard 'O' rings.

4. Disconnect air valve multiplugs.
5. Remove 2 bolts securing air valves and

remove air valves.

Refit

1. Position air valves and fit and tighten bolts.
2. Connect air valve multiplugs.
3. Connect air valve pipes.
4. Ensure pipes are located in cut outs in casing.
5. Position air compressor unit cover and lock

fasteners.

6. Repressurise SLS air system using TestBook.

WARNING: Eye protection must be worn
during the repressurisation procedure.