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 TM 9-2330-330-14&P
ENGINE TROUBLESHOOTING--Continued
0023 00
Table 1. Troubleshooting Procedures--Continued
TEST OR INSPECTION
CORRECTIVE ACTION
MALFUNCTION
9.
ENGINE EXHAUST IS
1.
Check for restricted air
If air passages are restricted,
BLACK OR FUEL
passages or red band in
clear restricted passages (refer
CONSUMPTION IS
air restriction indicator.
to WP 0113 00) and/or replace
EXCESSIVE--Continued
air filter element (refer to WP
solved. If air passages were
clear, go to step 2.
2.
Check for dirty,
If fuel is dirty, drain and remove
contaminated, or wrong
fuel tank (refer to WP 0108 00)
grade of fuel.
and fuel lines and replace and
refill tank with clean fuel.
Replace fuel filter (refer to WP
solved. If fuel was okay, go to
step 3.
3.
Check tachometer to see if
engine is operating at
If engine is not operating at
proper rpm.
proper rpm, adjust throttle cable
(refer to WP 0114 00). Verify
problem is solved. If engine is
operating at proper rpm, notify
Direct Support maintenance that
further troubleshooting is
required.
10.
PREHEAT INDICATOR
1.
Listen for clicking noise at
LAMP WILL NOT LIGHT
engine control box when
If clicking noise is heard, replace
preheat indicator lamp
indicator lamp (refer to WP 0120
switch is moved to ON
position.
noise is not heard, go to step 2.
2.
Check for continuity at
preheat switch.
If continuity is not present in
switch, replace switch (refer to
solved. If continuity is present, go
to step 3.
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