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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.

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