HYDRAULIC SYSTEM OPERATION UNUSUALLY NOISY. (Cont) -726250325

TM 9-2320-364-34-1

High pressure hydraulics [oil under 3,675 psi

(25,339 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.

AUDIBLE INSPECTION

(1) Remove cap from low speed

differential pressure sensing valve.

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

(3) Loosen jam nut.

(4) Turn adjustable screw one turn

clockwise (maximum of four turns).

(a) If noise only decreases slightly,

valve is not adjusted correctly.

Continue adjustment (maximum

of four turns) until noise is gone.

(b) If noise does not decrease, valve

is faulty. Replace valve,

(Para 17-18).

(5) Tighten jam nut.

(6) Replace cap.

(7) Shut OFF engine.