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 306 of 744
CONDITION/INDICATION
Is 2,850 psi (19 650 kPa) measured at heavy-duty winch motor?
DECISION
No - Troubleshoot: Winch Will Not Operate in Either Direction. (WP 0032)
Yes - Test 6 - Is more than 270 psi (1 861 kPa) measured on winch hydraulic brake release hose?
TEST 6 - Is more than 270 psi (1 861 kPa) measured on winch hydraulic brake release hose?
WARNING
•
Hydraulic system pressure can exceed 3,000 psi (20 684 kPa). A high-pressure hydraulic
system can pierce a body. Ensure engine if OFF prior to disconnecting hydraulic hoses. Failure
to comply may result in injury or death to personnel.
•
Never disconnect any high-pressure hydraulic hose, line or component without first dropping
pressure to zero. Failure to comply may result in injury or death to personnel.
•
Wear proper eye protection when working with or performing checks on high-pressure hydraulic
systems. Failure to comply may result in injury or death to personnel.
1. Place suitable drain pan under heavy-duty winch assembly prior to removing hose.
2. Disconnect winch brake release hose at winch brake. Cap fitting on winch brake assembly. Refer to schematics.
3. Connect 0 to 6000 psi (0 to 41 370 kPa) pressure gauge to winch brake release hose.
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 8.
TB 9-2320-279-13&P-4
0031
0031-8
Back to Top
