GENERAL MAINTENANCE INSTRUCTIONS
SectIon I. SPECIAL TOOLS AND EQUIPMENT
tenance repair parts are listed and illustrated
in TM 5-4310-247-35P.
No special tools or equipment are required
by direct and general support and depot main-
tenance personnel for performing maintenance
on the air compressor.
No specially designed tools or equipment are
required by direct and general support and
depot maintenance for performing mainte-
Maintenance Repair Parts
nance on the air compressor.
Direct and general support and depot main-
Section II. TROUBLESHOOTING
Possible remedy
Probable cause
98. General
Fuel pump governor surge--Check for broken or weak
This section provides information useful in
governor springs, re-
place if necessary.
diagnosing and correcting unsatisfactory op-
Missing cylinder or cylin-
Check and clean fuel noz-
eration or failure of the air compressor or any
zles (para 118).
ders.
of its components. Each trouble symptom stated
is followed by a list of probable causes of trou-
ble. The possible remedy recommended is de-
scribed opposite the probable cause.
Possible
remedy
Probable cause
Air in fuel lines---------------Check connections and
bleed fuel system.
Low compression----------------Refer to paragraph 105.
Injection nozzles faulty------Clean, repair or replace
Probable cause
Possible remedy
Starting motor defective-------Check brushes, commuta-
tor, drive springs and
Energy cell faulty------------Clean or replace (para
mounting bolts.
132).
Internal engine seizure--------Check for foreign object
Fuel pump faulty--------------Repair or replace (para
in gears, on top of pis-
119).
ton or for piston seizure.
Fuel injection timing wrong- Retime pump to engine
(para 72).
Possible remedy
Probable cause
Wrong injection pump tim- Retime pump to engine
Possible remedy
Probable cause
ing.
(para 72).
Thermostats sticking or in- Clean or replace.
Low compression-below
Refer to paragraph 105.
operative.
325 psi.
Fuel injection timing wrong- retime pump (para 72).
Fuel injection pump faulty -- Replace or repair fuel in-
Water pump inoperative----Repair or replace pump
jection pump (para 119).
Fuel injectors dirty------------------Replace or repair injectors
Starter faulty-----------------------Replace or repair starter
Possible remedy
Probable cause
Low engine temperature------Check thermostat replace
if necessary.
Probable cause
Possible
remedy
Too low operating tempera- Check thermostat, replace
Faulty nozzle-----------------------Clean and test (para 118).
ture-below 166 F.
if necessary.
Low compression------------------Refer to paragraph 105.
AGO 8166A
