2-37. MAINTENANCE OF PRESSURE RELIEF VALVE (CONT).
Hydraulic system is under high pressure. Follow hydraulic system safety pro-
cedures to prevent injury (TM 9-2350-38-20-2). Wipe UP spilled hydraulic fluid.
Make sure hydraulic system is depressurized before performing any hydraulic
maintenance to prevent injury to personnel.
Turn on hydraulic system. Refer to TM 9-2350-238-10.
Always wear leather gloves when
handling winch cable. Never allow
cable to run through hands. Broken
wires can cause painful injuries. Do
not operate winch/crane with less
than four turns of wire rope on
drums. Failure to observe these war-
nings could result in injury to
Do not stall boom at fully lowered
position. Do not rapidly speed up
boom when lowering. Failure to
follow instructions may result in
damage to oil pressure tester.
Steps 6 thru 19 are written for right
pressure relief valve.
Pass end of cable (3) through boom pulley
(4). Refer to TM 9-2350-238-10.
Attach 5-ton (4.54-metric ton) load on
boom block (5).
Set boom winch shift control lever (6) to
Lift load from ground. Refer to TM 9-