3
Compressor Replacement
7
WABCO
Maintenance Manual 31 (Revised 08-18)
3 Compressor Replacement
Hazard Alert Messages
Read and observe all Warning and Caution hazard alert messages in
this publication. They provide information that can help prevent
serious personal injury, damage to components, or both.
WARNING
To prevent serious eye injury, always wear safe eye protection
when you perform vehicle maintenance or service.
Remove all pressure from the air system before you
disconnect any component. Pressurized air can cause serious
personal injury.
Park the vehicle on a level surface. Block the wheels to
prevent the vehicle from moving. Support the vehicle with
safety stands. Do not work under a vehicle supported only by
jacks. Jacks can slip and fall over. Serious personal injury and
damage to components can result.
Compressor
Replacement Information
The cylinder head portion of the compressor is replaceable.
The crankcase is not replaceable. If the crankcase is damaged
or malfunctioning, replace the complete compressor.
The front of the WABCO System Saver 318 air compressor is
mounted to the engine.
Before you remove the compressor, make sure you have a
replacement gasket to install with the new compressor, Mack
part number 590GB2159.
Figure 3.1.
Figure 3.1
Removal
1.
Park the vehicle on a level surface and set the parking brakes.
Block the wheels to prevent the vehicle from moving.
2.
Drain the air pressure from the air system.
3.
Drain the engine cooling system and the cylinder head of the
compressor.
4.
Disconnect all air and water lines leading to the compressor.
5.
Through-drive version air compressor only:
If there is a
power steering pump installed at the
back
of the compressor,
remove the power steering pump. Figure 3.2. Disconnect the
power steering pump. Refer to the manufacturer’s manual for
specific information. It is not necessary to remove pumps
installed at the front of the compressor.
Figure 3.2
6.
Remove the discharge and coolant fittings. Note fitting
locations to aid in assembly.
The removal instructions given in this manual are general.
Depending on the type of vehicle involved, additional steps may
be required. Refer to the vehicle manufacturer’s manual for
additional information.
Figure 3.1
Figure 3.2
1003382a
1003377a
Summary of Contents for System Saver 318
Page 4: ...Notes...
