TM 5-4310-387-14
Section IV. UNIT TROUBLESHOOTING PROCEDURES
Paragraph
Page
4-10
General ................................ ................................ ................................ ........
4-5
4-11
Unit Troubleshooting Procedures................................ ................................ ...
4-5
4-10. General. This section contains troubleshooting and corrective action procedures authorized at the unit
maintenance level.
4-11. Unit Troubleshooting Procedures . Refer to symptom index to locate the troubleshooting procedure for the
observed malfunction. Table 4-2 lists malfunctions that may occur during operation or maintenance of the air
compressor. Tests, checks, inspections, and corrective actions should be performed in the order listed. If a malfunction
beyond the scope of unit maintenance is discovered, refer the malfunction to direct support maintenance.
NOTE
This table is not intended to cover every possible symptom, but is rather a list of
the more frequent problems and some of their causes.
SYMPTOM INDEX
Symptom
Page
1.
Engine does not start ................................ ................................ ....................
4-6
2.
Engine starts, then stops ................................ ................................ ..............
4-6
3.
Engine runs unevenly; low output ................................ ................................ .
4-6
4.
Engine exhaust emits excessive black smoke ................................ ..............
4-6
5.
Engine runs hot ................................ ................................ ............................
4-7
6.
Excessive engine oil consumption ................................ ................................
4-7
7.
Compressor noisy ................................ ................................ .........................
4-7
8.
Compressor runs hot ................................ ................................ ....................
4-7
9.
Compressor output volume too low ................................ ...............................
4-8
10.
Compressor vibrates ................................ ................................ ....................
4-8
11.
Abnormal drivebelt wear ................................ ................................ ...............
4-8
l
4-5
