Section V. FAN MOUNTING GROUP
a. Inspect bearings for roughness of
The fan mounting group is mounted
rotation. Replace bearing if its rotation
at the front of the engine. It consists of a
is rough after lubrication.
fan, drive pulley, brackets, and mounting
hardware. The fan and pulley are driven
b. Inspect bearings for scoring, pitting,
by the crankshaft pulley via the fan drive
scratches, cracks and discoloration. Re-
belts. The fan forces cooling air through
place defective bearing.
c . Inspect spindle and bracket assembly
a. Refer to Operator and Organizational
bearing surface for grooves, or galled con-
ditions. Replace defective spindle and
belts, fan drive belts, fan guard and orfice
ring on radiator shroud.
d. Inspect fan for distorted blades,
worn pilot hole or elongated mounting holes.
Do not allow fan to hit radiator core
Replace defective fan.
after it is removed from fan hub.
e. Inspect pulley for worn grooves,
and fan drive in the order of index numbers
nicks or cracks. Replace worn or cracked
8-32. DISASSEMBLY .
f. Inspect threaded holes for thread
fan drive assembly in the order of index
g. Discard gasket and seal.
Cleaning Solvents are flammable and
a. Minor nicks and burrs on fan and
moderately toxic to skin, eyes and
pulley may be removed using a suitable
respiratory tract. Eye and skin
protection required. Good general
ventilation is normally adequate.
b. Repair minor thread damage using
a suitable thread chaser.
Compressed air used for cleaning and
drying purposes can create airborne
particles that may enter the eyes.
Pressure shall not exceed 30 psig.
Eye protect ion is required.
fan drive assembly in the reverse order of
Do not spin dry bearings.
index numbers assigned. Pay particular
a. Wash parts in an approved cleaning
attention to the following:
should be dried with compressed air.
b. Clean pulley cavity of old grease.
Flush with cleaning solvent and air dry.