TM 5-4310-376-14
DIRECT SUPPORT MAINTENANCE INSTRUCTIONS
Section I. DIRECT SUPPORT TROUBLESHOOTING
5-1. GENERAL
Measurements performed by direct support maintenance personnel are prescribed in the trouble-
shooting procedures and should be performed in conjunction with those procedures. Where appli-
cable, the procedures reference paragraphs and charts which contain the necessary measure-
ment requirements.
To make inspection of parts simple and accurate, only the sizes at which they should be rejected
are shown. This eliminates the necsssity for figuring allowances for wear, etc. If a part is worn
larger (inside dimension such as connecting rod bearing) or smaller (such as crankshaft journal
surfaces) than the given sizes, they should be rejected and replaced with new parts.
Always use gages whenever possible to eliminate doubt and possible mistakes.
Refer to table 5-2 for component specifications.
5-2. TROUBLESHOOTING TABLE
This table provides information useful in diagnosing and correcting unsatisfactory operation or
failure of the compressor pump or gasoline engine. Each MALFUNCTION is followed by a list
of TEST OR INSPECTIONS for which CORRECTIVE ACTION are given.
The terms "Inspect", "Check", "Test", and "Replace" are used as follows:
INSPECT - Visual inspection, look for signs of wear, scoring, cracks, stripped threads, etc.
CHECK and TEST - Measure by means of gages, micrometer, scale, etc.
REPLACE - If part does not meet inspection requirements take off old part and replace
with a new one; otherwise, if part is O.K., re-install it.
INSTALL - Putting a serviceable component or assembly back in place after it has been
removed to allow access to some other component or assembly.
