TM-9-2320-273-34
TRUCK TRACTOR, LINE HAUL; LIGHT EQUIPMENT TRANSPORTER; TRUCK CHASSIS; MEDIUM EQUIPMENT TRANSPORTER
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
DECEMBER 1980
TM-9-2320-273-34 - Page 38 of 801
TM 9-2320-273-34
Table 2-10. Winch Troubleshooting procedures (Continued).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
6.
WINCH LINE SPEED NOTICEABLY SLOWER OR SLUGGISH.
Step 1.
Check level in oil tank.
a.
Add oil, if necessary. (Refer to LO 9-2320-273 -12.)
b.
If problem remains, go to step 2.
Step 2.
Check cleanliness of inlet strainer.
a.
Remove and clean. (Refer to TM 9-2320 -273-20.)
b.
If problem remains, go to step 3.
Step 3.
Check for external leaks in hydraulic lines.
a.
Carefully inspect all external lines; replace if defective. Tighten fittings on hoses
where leaks are suspected.
b.
If problem remains, go to step 4.
Step 4.
Check relief valve – may open and bypass fluid too soon.
a.
Perform hydraulic system test (para 20-13i)
b.
Remove relief valve and inspect. If weak spring is suspected, replace valve;
otherwise, clean and reinstall.
c.
If problem remains, go to step 5.
Step 5.
Check hydraulic pump output pressure (may be too low).
a.
Test hydraulic system (para 20-13 i).
b.
If pump output pressure is too low, repair pump (para 20-4).
7.
HYDRAULIC PUMP IS NOISY.
Step 1.
Check level in tank.
a.
Add oil, if necessary (LO 9-2320-273-12) and inspect for external leaks.
b.
If problem remains, go to step
2.
2-22
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