CAS40P 40 CFM / 100 PSIG
SECTION 7: TROUBLESHOOTING
PAGE - 61
®
An Oshkosh Corporation Company
Compressor runs hot
(continued)
Insufficient ventilation
Relocate unit for better ventilation/circula-
tion.
Low compressor oil level
Check and refill (
Section 6.4.3
).
Soiled compressor cylinder cool-
ing fins
Clean.
Soiled air intake filters
Replace filter elements (
Section 6.4.4
).
Faulty compressor valves
Inspect and replace (
Section 6.4.6
).
Low output air
Air filters soiled or plugged
Replace filter elements (
Section 6.4.4
).
Air line leak
Inspect and replace hose or tighten con-
nections.
Discharge valve stuck
Remove and clean, or replace.
Faulty compressor valves
Inspect and replace (
Section 6.4.6
).
Insufficient hydraulic oil flow
Refer to
Compressor runs slow
section of
this table.
Safety/relief valve leak
Replace valve.
Low air pressure
Air filters soiled/plugged
Replace filter elements (
Section 6.4.4
).
Pressure switch setting too low
May need to be replaced or reset; consult
Service Department for reset instructions.
Air line leak
Inspect and replace hose or tighten con-
nections.
Air consumption exceeds capacity
Check applied demand on supply air.
Faulty compressor valves
Inspect and replace.
Defective air pressure gauge
Replace (
Section 6.4.2
and
Section 8.6,
Part 2 of 4
).
Discharge valve soiled or stuck
Remove and clear, or replace.
Blown head gasket
Replace (
Section 6.4.6
).
Abnormal pressure fluctua-
tions
Air line leak
Inspect and replace hose or tighten con-
nections.
Continued on next page
7.2 TROUBLESHOOTING GUIDE
MALFUNCTION/FAULT
POSSIBLE CAUSE
CORRECTIVE ACTION
Manual #99905382 Rev 02
(JUNE 2018)
Summary of Contents for IMT CAS40P
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