LR3/Disco 3
The air supply unit is located on the outside of the left hand chassis rail, forward of the upper control arm. The unit is
attached to the chassis rail with three bolts and is protected by an acoustic box.
Acoustic Box
The acoustic box, which comprises of two parts; upper and lower, surrounds the air supply unit. The acoustic box is a
plastic moulding which is lined with an insulating foam which controls the operating noise of the air supply unit. The
reservoir valve block is also located in the acoustic box, forward of the air supply unit.
The air supply unit comprises the following major components:
l
A piston compressor
l
A 12V electric motor
l
A solenoid operated pilot valve
l
An exhaust valve
l
An air dryer unit
The air supply unit can be serviced in the event of component failure, but is limited to the following components; air dryer,
pilot exhaust pipe and the rubber mounts.
The air supply unit is attached to a bracket which is bolted to the chassis. The unit is mounted to the bracket with flexible
isolation mounting rubbers which assist with preventing operating noise being transmitted to the chassis.
11
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Pilot air pipe
12
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Pressure outlet to pilot exhaust valve
13
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Compressor cylinder head temperature sensor
14
-
Compressor
Item Part Number
Description
1
-
Upper cover
2
-
Lower cover
3
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Air supply unit
4
-
Reservoir valve block
