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 148 of 1116

TM 9-2330-330-14&P

0023 00-6

ENGINE TROUBLESHOOTING—Continued

0023 00

Table 1. Troubleshooting Procedures—Continued

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

7.

ENGINE SPEED IS

ERRATIC OR WILL NOT

MAINTAIN STEADY RPM

8.

ENGINE SPEED IS TOO

HIGH OR TOO LOW

9.

ENGINE EXHAUST IS

BLACK OR FUEL

CONSUMPTION IS

EXCESSIVE

1.

Check for proper operation

of throttle cable.

2.

Check fuel lines for leaks.

3.

Check for restricted air

passages or red band in

air restriction indicator.

Check for proper operation of

throttle cable.

NOTE

Brown or black color in

exhaust indicates incomplete

combustion. Exhaust gases

are never invisible but darker

exhaust may indicate trouble

especially if there has been no

change in engine condition.

If cable is loose, tighten throttle

cable (refer to WP 0114 00).

Verify problem is solved. If

throttle cable is not loose, go to

step 2.

If fuel lines are leaking/damaged,

tighten all connections and

repair/replace any damaged fuel

lines (refer to WP 0109 00).

Verify problem is solved. If fuel

lines are not leaking, go to step

3. If fuel lines still leak, notify

Direct Support maintenance.

If air passages are restricted,

clear restricted passages and/or

replace air element (refer to WP

0039 00 and WP 0113 00).

Verify problem is solved. If air

passages are okay, and engine

still will not maintain steady rpm,

notify Direct Support

maintenance that further

troubleshooting is required.

If cable is loose or damaged,

repair/replace cable (refer to WP

0114 00). Verify problem is

solved. If cable is not loose or

damaged, notify Direct Support

maintenance that further

troubleshooting is required.