BOOM DOES NOT TELESCOPE IN OR TELESCOPES IN SLOWLY. (Cont) -726250641

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 elbow.

Discard preformed packings.

(2) Install plugs with preformed

packings on disconnected hoses.

(3) Install cap with preformed packings

on fitting.

(4) Connect flowmeter OUT port

adapter hose with preformed

packing to telescope elbow.

(5) Disconnect hose from outboard

(taller) elbow above TELE valve.

Discard preformed packings.

(6) Install plug with preformed packing

in crane hose.

(7) Connect flowmeter IN port adapter

to four valve bank elbow.

(8) Open flowmeter load valve.

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

(10) Set WINCH/CRANE switch to

CRANE position.

(11) Set hydraulic selector switch to

CRANE/SRW position.

(12) Set crane POWER switch to

ON position.

(13) Hold TELE control lever in the IN

position.

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

measured, perform Steps (14)

through (23) and replace

telescope cylinder (Para 16-10)

on LHS side of boom.

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

perform Steps (14) through (23)

and replace telescope

cylinder (Para 16-10) on cab

side of boom.

Continued on next page.

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