TM 9-2320-260-20
Table 2-2. Mechanical Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
19. ENGINE DOES NOT REACH NORMAL OPERATING TEMPERATURE
Test coolant temperature gage. sending unit. and electrical circuits (table 2-4. electrical trouble-
shooting, malfunction 30).
END OF TESTING!
20. LOSS OF COOLANT DURING NORMAL OPERATION
Step 1. Pressurize cooling system and check for leaks.
a. Tighten loose clamps, fasteners, and fittings.
b. Replace leaking hoses (para. 3-46).
c. Replace leaking radiator (para. 3-50).
d. Replace leaking surge tank (para. 3-48).
Step 2. Check surge tank cap for proper relief pressure (TM 750-254). Relief pressure should be
14 psi (96.% kPa). - - -
Replace surge tank cap if defective (para. 3-48).
END OF TESTING!
CLUTCH
21. VEHICLE CREEPS WITH CLUTCH DEPRESSED
Step 1. Check clutch pedal free travel. Clutch pedal should have 2-2.5 in. (5.1-6.4 cm) free
travel.
Adjust clutch pedal free travel as necessary (para. 3-12).
Step 2. Check check linkage for bends and broken parts.
Replace damaged parts (para. 3-13).
END OF TESTING!
22. CLUTCH DRAGS, SLIPS, OR DOES NOT ENGAGE
Step 1. Check clutch pedal free travel (malfunction 21, step 1).
Step 2. Check linkage for proper lubrication (LO 9-2320-260-12).
Lubricate clutch linkage if dry (LO 9-2320-260-12).
Step 3. Check clutch linkage for binding, bends, and broken parts.
Replace binding, bent, or broken parts (para. 3-13).
END OF TESTING!
NONELECTRICAL GAGES
23. SPEEDOMETER, TACHOMETER, OR TACHOGRAPH BOUNCES, NOISY, OR INOPERATIVE
Step 1. Inspect speedometer or tachometer flexible shaft for binding, kinks, or breaks.
Replace if damaged (para. 4-12 or 4-13).
Step 2. Inspect speedometer, tachometer, or tachograph for proper operation.
a. Test proper operation of speedometer, tachometer, or tachograph by replacing with
speedometer, tachometer, or tachograph, which is known to be good (para. 4-11 or 14-49).
b. If test speedometer, tachometer, or tachograph functions properly, replace defective
speedometer, tachometer, or tachograph (para. 4-11 or 14-49).
END OF TESTING!
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