TM-5-3805-274-13-P
DUMP TRUCK BODY M917
TECHNICAL MANUAL; OPERATOR AND FIELD MAINTENANCE MANUAL INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST
AUGUST 2013
TM-5-3805-274-13-P - Page 79 of 364
SYMPTOM
Tailgate lock mechanism does not engage or release.
MALFUNCTION
Inspect tailgate control lever, rod, and mount brackets for binding caused by bent parts or broken welds.
Check pivot points of lock mechanism for misalignment.
Check for tailgate damage that has resulted in misalignment.
CORRECTIVE ACTION
1. Straighten bent parts and repair any broken weld seams. Refer to WP 0030, WP 0039, or notify
your supervisor to repair any broken weld seams.
2. Straighten parts. Refer to WP 0039.
3. Replace tailgate. Refer to WP 0030.
END OF TASK
SYMPTOM
Hydraulic system gradually operates slower, especially under load conditions.
MALFUNCTION
Check for low fluid level in reservoir.
Check all hydraulic components for leaks.
Check filter service indicator gauge for indication of dirty filter element.
Check reservoir fill cap by running system without fill cap.
Check control valve pressure.
Check hydraulic pump for excessive or erratic noise and low pressure.
CORRECTIVE ACTION
1. Fill reservoir. Refer to WP 0049.
2. Replace leaking parts. Refer to WP 0040.
3. Replace filter element. Refer to WP 0042.
4. If system speed increases, replace fill cap. Refer to WP 0047.
5. Adjust control. Refer to WP 0032.
6. Rebuild or replace hydraulic pump. Refer to WP 0033 and WP 0034.
END OF TASK
SYMPTOM
Hydraulic pump is noisy and makes grinding sounds.
MALFUNCTION
Check for low fluid in hydraulic reservoir.
Check filter service indicator gauge for 10 psi restriction or greater than reading with new filter element.
CORRECTIVE ACTION
1. Hydraulic reservoir. Refer to WP 0049.
2. Replace filter element, refer to WP 0042. Replace hydraulic pump, refer to WP 0033 if problem
is not corrected.
END OF TASK
TM 5-3805-274-13&P
0016
0016-3
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