HOIST DOES NOT RAISE. (Cont) -726250753

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.

FLOWMETER TEST

(1) Disconnect hose 2918 from main

hydraulic filter.

(2) Connect adapter hose to filter.

(3) Connect adapter hose to flowmeter

OUT port.

(4) Connect adapter hose to hose 2918.

(5) Connect adapter hose to flowmeter

IN port.

(6) Open flowmeter load valve.

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

(8) Set WINCH/CRANE switch to

CRANE position.

(9) Set hydraulic selector switch to

CRANE/SRW position.

(10) Turn ON crane POWER

switch.

(11) Observe and record gpm (lpm)

measured.

(12) Hold HOIST control lever in UP

position.

(a) If an increase in flow is not

measured, perform Steps (13)

through (18) below and repair

HOIST valve on four valve bank

(Para 16-33).

(b) If an increase in flow is

measured, hoist relief valve or

OSS directional valve is

faulty. Replace hoist OSS

directional valve in four valve

bank (Para 16-26). Perform

Steps (13) through (15) and go

to Step 6 of this Fault.

(13) Set crane POWER switch to OFF

position.

(14) Set hydraulic selector switch to OFF

position.

(15) Turn OFF ENGINE switch.

(16) Disconnect adapter hose from

hose 2918. Discard preformed

packing.

(17) Disconnect adapter hose from

return line filter. Discard preformed

packing.

(18) Connect hose 2918 to adapter.

2-669