TB-9-2320-279-13-P-4

TRUCK, TRACTOR, LIGHT EQUIPMENT TRANSPORTER (LET), 8X8, M983A2 LET

TECHNICAL BULLETIN; OPERATOR AND FIELD LEVEL

APRIL 2008

TB-9-2320-279-13-P-4 - Page 307 of 744

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.

(WP 0015)

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.

WINCH BRAKE

RELEASE HOSE

PIPE

COUPLING

WINCH BRAKE

RELEASE HOSE

PIPE TO TUBE

ADAPTER FITTING

0 TO 6000 PSI

(0 TO 41 370 kPa)

PRESSURE GAUGE

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?

TB 9-2320-279-13&P-4

0031

0031-9