CRANE DOES NOT SWING CLOCKWISE (CW). (Cont) -726250621

TM 9-2320-364-34-1

High pressure hydraulics [oil under 3,000 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) Disconnect tube from swing brake

and swing motor valve.

Discard preformed packings.

(2) Install pressure gage with

preformed packing to elbow on

swing motor valve.

(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) Hold SWING control lever in CW

position.

(a) If 1,800 psi (12,411 kPa) or more

are not present, perform

Steps (8) through (12) below

and repair swing motor valve

(Para 16-19).

(b) If 1,800 psi (12,411 kPa) or more

are present, perform Steps (8)

through (12) below and go to

Step 4 of this Fault.

(8) Set crane POWER switch to

OFF position.

(9) Set hydraulic selector switch to OFF

position.

(10) Turn OFF ENGINE switch.

(11) Disconnect pressure gage from

swing motor valve. Discard

preformed packing.

(12) Connect tube with two preformed

packings to swing drive gear

reducer and swing motor valve.