TM 3-1040-263-34
Table 4-4. Troubleshooting-Continued
Item
No.
Malfunction
Probable cause
Corrective action
a. Insufficient speed --------------
9
Low airflow or long fill time
Increase engine speed (TM 5-205-256-14).
b. High blowby --------------------
Refer to item 6 above
c. Insufficient inlet air compressor
Clean 1st-stage strainer and filter assembly
unit.
(TM 3-1040-263-12).
NOTE
When determining leaks, the
compressor should be
operating under normal
conditions.
d. Leaking or popping of relief valve _
Refer to item 2 above
e. Leaky fittings, heat exchanger con-
Replace leaky gaskets, packings or
nections, gaskets, packings, or
bushings.
any external leakage.
10
Inability to fill to rated
a. Low airflow or long fill time ------
Refer to item 9 above
pressure.
11
Insufficient speed and over-
a. Lack of lubrication --------------
Check oil level (TM 3-1040-263-12)
heating of compressor unit. b. Insufficient cooling air -----------
Operate compressor unit under prescribed
conditions with sufficient coolin g air.
a. Compressor failure or engine
Remove engine from compressor and
12
Inability of compressor unit to
turn over or reach speed
failure.
check each for freedom of movement.
Replace defective unit (para 4-32 or
b. Broken or loose crankshaft
Tighten or replace crankshaft adapter
adapter.
Section X. GASOLINE ENGINE GROUP
f.
Remove nut (1, fig. 4-18), lockwasher (2),
4-45. General
screw (3), and clamp (4).
General support maintenance personnel are authorized
g. Disconnect nuts of fuel line (5) from the
to replace the gasoline engine, crankshaft adapter,
filter (7) and elbow (16).
engine adapter, pulley, left and right-hand brackets,
h. Remove fuel line (5).
exhaust pipe, and attaching hardware. General support
i.
Remove cap screws (8) and lockwashers
maintenance personnel are also responsible for the
(9).
manufacture of the fuel line and tank clamps.
j. Remove gasoline engine (34) with assembled
4-46. Description
parts from the bottom frame (38, fig. 3-2).
TM 5-2805-256-14 describes the gasoline engine.
4-48. Disassembly
4-47. Removal
a. Remove canvas group (TM 3-1040-263-
12).
NOTE
b. Remove protecting cage (para 3-7).
c. Remove plug (15, fig. 3-2), and drain fuel
Except where stated, retain all removed parts for
tank (31).
installation on replacement engine.
d.
Disconnect aftercooler end nut from water
a. Remove crankshaft adapter (15, fig. 4-18)
separator elbow (19, fig. 3-1).
(para 4-52a(3) and (4).
e. Using the crankcase removal instructions
B
Remove the elbow (16) from the fuel filter
(para 432a), remove compressor from engine.
assembly (17).
c. Remove the fuel filter assembly (17) from
4-31
