OUTRIGGERS DO NOT OPERATE OR OPERATE SLOWLY. (Cont) -726250527

TM 9-2320-364-34-1

High pressure hydraulics [oil under 3000 psi (20,675 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) Loosen jam nut on relief valve.

(2) Hold RH O/R JACK control lever

on RH side of truck in UP

position (TM 9-2320-364-10).

(3) Adjust relief valve by turning screw

left or right and observe pressure

gage.

(a) If 3000 to 3100 psi

(20,685 to 21,375 kPa) cannot be

obtained, perform Steps (4)

through (9) below and repair four

valve bank center manifold

(Para 16-26).

(b) If 3000 to 3100 psi

(20,685 to 21,375 kPa) can be

obtained, perform Steps (4)

through (8) below and notify

supervisor.

(4) Tighten jam nut on relief valve.

(5) Set crane POWER switch to

OFF position.

(6) Set hydraulic selector switch to

OFF position.

(7) Turn OFF ENGINE switch.

(8) Disconnect pressure gage from tube.

Discard preformed packing.

(9) Install cap with preformed packing on

tube.