BOOM DOES NOT TELESCOPE OUT OR TELESCOPES OUT SLOWLY. (Cont) -726250649

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) Remove adapter hoses from

elbows. Discard preformed

packings.

(2) Connect flowmeter IN port adapter

hose with preformed packing to the

crane hose removed from inboard

(shorter) elbow.

(3) Connect flowmeter OUT port

adapter hose with preformed

packing to inboard (shorter) elbow.

(4) Install crane hose with preformed

packing on outboard (taller) elbow.

(5) Open flowmeter load valve.

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

(7) Set WINCH/CRANE switch to

CRANE position.

(8) Set hydraulic selector switch to

CRANE/SRW position.

(9) Set crane POWER switch to

ON position.

(10) Telescope boom in completely if

boom operates slowly.

(11) Hold TELE control lever in the OUT

position.

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

are present, perform Steps (12)

through (17) below and go to

Step 4 of this Fault.

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

perform Steps (12) through (17)

below and go to Step 3 of this

Fault.

(12) Set crane POWER switch to

OFF position.

(13) Set hydraulics selector switch to

OFF position.

(14) Turn OFF ENGINE switch.

(15) Tag, mark and disconnect crane

hose from outboard (taller) elbow.

Discard preformed packing.

(16) Disconnect adapter hoses from

elbow and crane hose. Discard

preformed packings.

(17) Connect two crane hoses with

preformed packings to elbows.

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