COMPRESSOR OIL COOLER
The compressor lubricating and cooling oil is cooled
by means of the fin and tube--type oil cooler, located
beside the radiator. The lubricating and cooling oil,
flowing internally through the core section, is cooled
by the air stream from the cooling fan flowing past
the core section.
When grease, oil and dirt
accumulate on the exterior surfaces of the oil cooler,
its efficiency is impaired.
Each month it is recommended that the oil cooler be
cleaned by directing compressed air which contains
a nonflammable safety solvent through the core of
the oil cooler. This should remove the accumulation
of grease, oil and dirt from the exterior surfaces of
the oil cooler core so that the entire cooling area can
transmit the heat of the lubricating and cooling oil to
the air stream.
In the event foreign deposits, such as sludge and
lacquer, accumulate in the oil cooler to the extent
that its cooling efficiency is impaired, a resulting high
discharge air temperature is likely to occur, causing
shut down of the unit.
To correct this situation it will be necessary to clean
it using a cleaning compound in accordance with the
manufacturer’s recommendations.
Use only a
dependable cleaning compound. This is of prime
importance because different cleaners vary in
concentration and chemical composition.
After
completing the cleaning procedure, the oil cooler
must be flushed before returning to service.
RADIATOR
WARNING
Do not remove the cap from a HOT engine
radiator. The sudden release of pressure from a
heated cooling system can result in serious
personal injury.
The engine cooling system is filled at the factory with
a 50/50 mixture of water and ethylene glycol. This
permanent type antifreeze contains rust inhibitors
and provides protection to --35
°
F (--37
°
C).
The use of such a mixture is recommended for both
summer and winter operation. When using water
alone, be sure to add a reputable brand of rust
inhibitor to prevent internal corrosion.
It is recommended to test the freezing protection of
the coolant every six months or prior to freezing
temperatures. Replenish with a fresh mixture every
twelve months. A drain for the system is located in
the bottom radiator tank. An alternate method would
be to disconnect a bottom radiator hose.
Each month, inspect the radiator exterior for
obstructions (dirt, bugs, etc.). If present, blow water
or compressed air containing a nonflammable
solvent between the fins in a direction opposite the
normal air flow. Should the radiator be clogged
internally, standard automotive practices should be
followed.
HOSES
Each month it is recommended that all of the intake
lines to and from the air cleaners, the engine cooling
system hoses and all of the flexible hoses used for
air, oil, and fuel be inspected.
To ensure freedom from air leaks, all rubber hose
joints and the screw--type hose clamps must be
absolutely tight.
Regular inspection of these
connections for wear or deterioration is a definite
“must” if regulator servicing of the air cleaners is not
to prove futile.
Premature wear of both the engine and compressor
is ensured whenever dust--laden air is permitted to
enter the engine’s combustion chamber or the
compressor intake practically unfiltered.
