Specifications

12
main local global operation trouble-
menu search search shooting
A. Check engine or compressor air cleaner and
replace if necessary. Check compressor air
inlet for kinks, excessive bends and be certain
inlet lines have the minimum specified inside
diameter. Recommended minimum inlet line
inside diameter is 5/8“. Recommended
maximum air inlet restriction is 25” of water.
B. Oil return to the engine should not be in any
way restricted. Check for excessive bends,
kinks and restrictions in the oil return line.
Minimum recommended oil return line size is
5/8" O.D. tubing or equivalent l.D. (1/2"
minimum). Return line must constantly
descend from the compressor to the engine
crankcase. Make certain oil drain passages in
the compressor and mating engine surfaces
are unobstructed and aligned. Special care
must be taken when sealants are used with, or
instead of, gaskets.
C. Check for damaged, defective or dirty air filter
on engine or compressor. Check for leaking,
damaged or defective compressor air intake
components (e.g. induction line, fittings,
gaskets, filter bodies, etc.). The compressor
intake should not be connected to any part of
the exhaust gas recirculation (E.G.R.) system
on the engine.
D. For air-cooled portions of the compressor:
1. Remove accumulated grease, grime or dirt
from the cooling fins. Replace components
found damaged.
2. Check for damaged cooling fins. Replace
components found damaged.
For water-cooled compressor or water-cooled
portions of the compressor:
1. Check for proper coolant line sizes. Minimum
recommended size is 1/2” O.D. tubing.
2. Check the coolant flow through the
compressor. Minimum allowable flow is 2.5
gallons per minute at engine governed speed.
If low coolant flow is detected, inspect the
coolant lines and fittings for accumulated rust
scale, kinks and restrictions.
3. Water temperature should not exceed 200
degrees Fahrenheit.
4. Optimum cooling is achieved when engine
coolant flows into the cylinder block at one end
and out the compressor cylinder head at the
opposite end.
COMPRESSOR TROUBLESHOOTING CHART
SYMPTOMS
1. Compressor passes
excessive oil as
evidenced by
presence of oil at
exhaust ports of
valving or seeping
from air strainer.
A. Restricted air intake.
B. Restricted oil return (to
engine).
CAUSE
REMEDY
C. Poorly filtered inlet air.
D. Insufficient compressor
cooling (compressor
runs hot).