Clutch Maintenance
68
Figure 63: Pulley Arbor P/N 204-804
System Compressor and Oil
Installation of the Compressor
The compressor is mounted in the engine
compartment. The side to side mounting angle of
the compressor must remain ± 45° from the
horizontal. The forward to backward angle must
be within ± 10° of horizontal.
Each compressor comes with a standard charge of
Polyol Ester (POE) oil inside. This quantity of oil
is enough to supply the compressor lubrication
when it is installed into an already “oil wet”
system. New systems require an extra quantity of
oil be added to “wet” all the interior surfaces of
the system.
During normal operation there is always a
quantity of oil that travels around inside the
system. This oil lubricates all the components,
returns to the compressor for a while, and again
travels around the system.
Adding Extra Oil to the System
The initial oil charge into a new system is based
on the size of the system and the amount of oil,
which remains in the compressor during
operation.
The correct oil to use in a unit using R-134a or
R-404A is Polyol Ester (POE) oil (P/N 203-413).
Any extra or replacement oil should be placed into
the system at the receiver tank port.
Major Loss of Refrigerant
In case of a major loss of refrigerant, it must be
assumed that some system oil is lost also. The oil
level should be verified. Refer to the following,
“Checking the Oil Level” for details.
Checking the Oil Level
Drain the Oil
Figure 64: Draining the Oil
8932f
CAUTION: keep all oil containers tightly
sealed from the air. oil tends to absorb
moisture fro the air and can become
contaminated if left open. If contaminated
oil is put into a system, it may damage the
components of the system.
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