CRANE DOES NOT SWING OR SWINGS SLOWLY. (Cont) -726250609

TM 9-2320-364-34-1

High pressure hydraulics [oil under 3000 psi (20,685 kPa) pressure] operate this equipment. Refer to

vehicle operator and maintenance manuals for hydraulic oil pressure. Never disconnect any hydraulic

line or fitting without first dropping pressure to zero. Failure to comply may result in injury to personnel.

Fuel and oil are slippery and can cause falls. To avoid injury, wipe up spilled fuel or oil with rags.

NOTE

Use a drain pan to catch leaking hydraulic oil.

PRESSURE TEST

(1) Remove cap from swing motor

valve elbow. Discard preformed

packing.

(2) Connect pressure gage with

preformed packing to elbow.

(3) Start engine (TM 9-2320-364-10).

(4) Set WINCH/CRANE switch to

CRANE position.

(5) Set hydraulic selector switch to

CRANE/SRW position.

(6) Set crane POWER switch to

ON position.

(7) Operate swing motor using SWING

control lever.

(a) If 1800 psi (12,411 kPa) or more

are not present, repair swing

motor valve (Para 16-19) and

perform Steps (8) through (15)

below.

(b) If 1800 psi (12,411 kPa) or more

are present, swing brake is

faulty. Perform Steps (8)

through (15) below and notify

supervisor.

Continued on next page.