FAN DOES NOT OPERATE AT HIGH SPEED. (Cont) -726250317

TM 9-2320-364-34-1

High pressure hydraulics [oil under 3675 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.

Adhesive, solvents, and sealing compounds can burn easily, can give off harmful vapors, and are harmful

to skin and clothing. To avoid injury or death, keep away from open fire and use in well-ventilated area. If

adhesives, solvent, or sealing compound gets on skin or clothing, wash immediately with soap and water.

NOTE

Use drain pan to catch leaking hydraulic oil.

VISUAL INSPECTION

(1) Remove nut and solenoid.

(2) Remove high speed fan lockout

solenoid valve from multifunction

manifold.

(3) Remove and discard two preformed

packings and packing retainers.

(4) Push plunger inside valve with a

non-metallic probe.

(a) If plunger sticks or does not

move freely up and down,

replace solenoid valve

(Para 17-18).

(b) If plunger moves freely up and

down, solenoid valve is OK.

(5) Lubricate two preformed packings

and packing retainers with hydraulic

oil and install on solenoid valve.

(6) Install high speed fan lockout

solenoid valve.

(7) Install solenoid and nut.

(8) Connect solenoid connector.

(9) Tighten connector screw and coat

head of connector screw with

sealing compound.