BOOM DOES NOT TELESCOPE OUT OR TELESCOPES OUT SLOWLY. (Cont) -726250655

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) Tag, mark and disconnect two

hoses from telescope cylinder

fitting and tee on side of boom

without OSS box. Discard

preformed packings.

(2) Install plugs with preformed

packings on disconnected hoses.

(3) Install caps with preformed packings

on fitting and tee.

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

(5) Set WINCH/CRANE switch to

CRANE position.

(6) Set hydraulic selector switch to

CRANE/SRW position.

(7) Set crane POWER switch to

ON position.

(8) Hold TELE control lever in the IN

position.

(a) If more than 0 gpm (0 lpm) are

measured, perform Steps (9)

through (18) below and replace

telescope cylinder (Para 16-10)

that is not on the OSS side of

the boom.

(b) If 0 gpm (0 lpm) are measured,

perform Steps (9) through (18)

below and replace telescope

cylinder (Para 16-10) that is on

OSS side of boom.

(9) Set crane POWER switch to

OFF position.

(10) Set hydraulics selector switch to

OFF position.

(11) Turn OFF ENGINE switch.

(12) Remove two plugs from hoses.

Discard preformed packings.

(13) Remove two caps from tee and

adapter. Discard preformed

packings.

(14) Connect hose with preformed

packing to tee.

(15) Connect hose with preformed

packing to fitting.

(16) Disconnect hose from outboard

(taller) elbow above TELE valve.

Discard preformed packing.

(17) Disconnect adapter hoses from

elbow and hose. Discard preformed

packing.

(18) Connect two hoses with preformed

packings to elbows.

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