TB 9-2320-279-13&P-4
0031
WARNING
Excessive noise levels are present any time the heavy-duty winch, crane, or retrieval system
is operating. Wear single hearing protection (earplugs or equivalent) while working around
equipment when it is running. Failure to comply may result in injury or death to personnel.
Seek medical aid should you suspect a hearing problem.
4. Start engine. (refer to TM 9-2320-279-10).
5. Set PTO ENGAGE switch to ON position. (WP 0015)
6. Have assistant operate heavy-duty winch IN and OUT manual controls, while noting reading on pressure gauge.
7. Set PTO ENGAGE switch to OFF position. (WP 0015)
8. Shut OFF engine (refer to TM 9-2320-279-10).
9. Disconnect pressure gauge and reconnect hydraulic hose to winch brake fitting.
0 TO 6000 PSI
(0 TO 41 370 kPa)
PIPE
PRESSURE GAUGE
COUPLING
WINCH BRAKE
WINCH BRAKE
PIPE TO TUBE
RELEASE HOSE
RELEASE HOSE
ADAPTER FITTING
Figure 9.
CONDITION/INDICATION
Is more than 270 psi (1 861 kPa) measured on winch hydraulic brake release hose?
DECISION
No - Replace heavy-duty winch counterbalance valve. (WP 0071)Test 8 - Does heavy-duty winch operate
normally?
Yes - Test 7 - Is winch motor free from excessive noise, jerking, or slow operation when removed from winch
assembly?