TM 5-4310-386-14
5-5. Direct Support Troubleshooting Procedures . Table 5-1 lists the common malfunctions that may be found during
operation. Refer to symptom index to locate the troubleshooting procedures for the malfunction. This manual cannot list
all malfunctions that may occur, nor all test or inspections and corrective actions. If a malfunction is not corrected by
listed corrective actions, notify your supervisor.
SYMPTOM INDEX
Symptom
Page
1.
Compressor will not load ............................................................................................................................... 5-3
2.
Compressor output low.................................................................................................................................. 5-3
3.
Low compressor oil pressure......................................................................................................................... 5-3
4.
Compressor air has oily taste ........................................................................................................................ 5-3
5.
Sight glass exhibits air bubbles ..................................................................................................................... 5-4
6.
Compressor does not attain final pressure .................................................................................................... 5-4
7.
Excessive vibration of unit ............................................................................................................................ 5-4
8.
Condensate drain not draining (cold weather) ............................................................................................... 5-5
9.
No compressor oil pressure .......................................................................................................................... 5-5
10.
Compressor output insufficient ...................................................................................................................... 5-5
11.
Safety valves between stages releasing pressure ......................................................................................... 5-6
12.
Compressor overheats (shutdown activates)................................................................................................. 5-6
13.
Automatic interfilter drain does not unload .................................................................................................... 5-6
14.
Automatic interfilter drain leaks and blows off continuously ........................................................................... 5-6
15.
Compressor speed low ................................................................................................................................. 5-6
16.
Engine gives poor performance .................................................................................................................... 5-6
17.
Engine oil pressure zero or low ..................................................................................................................... 5-7
18.
Engine oil consumption excessive ................................................................................................................ 5-7
19.
Engine smokes white .................................................................................................................................... 5-8
20.
Engine smokes blue ..................................................................................................................................... 5-8
21.
Engine smokes black .................................................................................................................................... 5-8
22.
Engine does not run smoothly ....................................................................................................................... 5-8
23.
Engine overheats or backfires ....................................................................................................................... 5-9
5-2
