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Book 22442552 (7/03)
BATTERY
Keep the battery posts--to--cable connections clean,
tight and lightly coated with a grease. Also the
electrolyte level in each cell should cover the top of the
plates. If necessary, top--up with clean distilled water.
TIRES
A weekly inspection is recommended. Tires that have
cuts or cracks or little tread should be repaired or
replaced. Monthly check the wheel lug nuts for
tightness.
COMPRESSOR OIL COOLER
The compressor lubricating and cooling oil is cooled
by means of the fin and tube--type oil cooler, located
below 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.
Every 3 months, it is recommended that the oil cooler
be cleaned by directing compressed air which
contains a nonflammable, non--caustic 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 lac-
quer, accumulate in the oil cooler to the extent that its
cooling efficiency is impaired, a resulting high dis-
charge air temperature is likely to occur, causing shut
down of the unit. To correct this situation it will be nec-
essary to clean it using a cleaning compound in accor-
dance with the manufacturer’s recommendations.
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 abso-
lutely tight. Regular inspection of these connections
for wear or deterioration is necessary.
Premature wear of both the engine and compressor is
ASSURED whenever dust--laden air is permitted to
enter the engine’s combustion chamber or the com-
pressor intake.
The flexible hoses used in the fuel, oil and air lines on
these units are primarily used for their ability to accom-
modate relative movement between components. It is
important they be periodically inspected for wear and
deterioration. It is also important the operator does
not use the hoses as convenient hand hold or steps.
Such use can cause early cover wear and hose failure.
Piping systems operating at less than 150 psi (1050
kPa) may use a special nylon tubing. The associated
fittings are also of a special “push--in” design. If so,
features are as follows:
Pulling on the tubing will cause the inner sleeve to with-
draw and compress, thus tightening the connection.
The tubing can be withdrawn only while holding the
sleeve against the fitting. The tubing can be removed
and replaced numerous times without losing its seal-
ing ability.
To install the nylon tubing, make a mark (with tape or
grease pencil) approximately 7/8 inch from the end of
the tubing. Insert the tubing into the sleeve and
“push--in” past the first resistance to the bottom. The
mark should be approximately 1/16 inch from the
sleeve, for the 3/8 inch O.D. tubing; 1/8 inch for the
0.25 inch O.D. tubing. This will ensure that the tubing
is fully engaged in the sealing mechanism.
COMPRESSOR OIL FILTER
The oil filter must be replaced every 500 hours of
operation or six (6) months, whichever comes first.
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