TM-9-2330-330-14-P

SEMITRAILER, FUEL TANKER: 5000-GALLON, FUEL-DISPENSING, AUTOMOTIVE, M969A3

TECHNICAL MANUAL; OPERATOR’S, ORGANIZATIONAL, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)

NOVEMBER 2005

TM-9-2330-330-14-P - Page 149 of 1116

TM 9-2330-330-14&P

0023 00-7

ENGINE TROUBLESHOOTING—Continued

0023 00

Table 1. Troubleshooting Procedures—Continued

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

9.

ENGINE EXHAUST IS

BLACK OR FUEL

CONSUMPTION IS

EXCESSIVE—Continued

10.

PREHEAT INDICATOR

LAMP WILL NOT LIGHT

1.

Check for restricted air

passages or red band in

air restriction indicator.

2.

Check for dirty,

contaminated, or wrong

grade of fuel.

3.

Check tachometer to see if

engine is operating at

proper rpm.

1.

Listen for clicking noise at

engine control box when

preheat indicator lamp

switch is moved to ON

position.

2.

Check for continuity at

preheat switch.

If air passages are restricted,

clear restricted passages (refer

to WP 0113 00) and/or replace

air filter element (refer to WP

0039 00). Verify problem is

solved. If air passages were

clear, go to step 2.

If fuel is dirty, drain and remove

fuel tank (refer to WP 0108 00)

and fuel lines and replace and

refill tank with clean fuel.

Replace fuel filter (refer to WP

0109 00). Verify problem is

solved. If fuel was okay, go to

step 3.

If engine is not operating at

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.

If clicking noise is heard, replace

indicator lamp (refer to WP 0120

00). Verify problem is solved. If

noise is not heard, go to step 2.

If continuity is not present in

switch, replace switch (refer to

WP 0120 00). Verify problem is

solved. If continuity is present, go

to step 3.