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ARMY TM 9-4210-381-14
NAVY EE-000-CA-MMA-010/7053-AC
AIR FORCE TO 35E9-136-31
Table 4-1. Unit Preventive Maintenance Checks and Services - Continued
Item
Inter-
Items to
Not Fully Mission
No.
Val
Check/
Procedure
Capable If:
Service
RFI Filter
d.
Inspect fuses and fuse holders (para 4-42).
Fuses are burnt
(cont.)
out.
15
Quarterly
Control Box
a.
Check operations of controls for stiffness
Controls are stiff
or binding (para 4-45).
or bind.
b.
Inspect wiring harness for damage or
Wiring harness is
chafing, and all electrical connections for
damaged.
tightness.
c.
Repair control box (para 4-63).
d.
Replace control box if damaged (para 4-63).
Control box is
damaged.
16
Quarterly
Fan Belts
a.
Access fan belts (para 4-69 and 4-75).
b.
Check that belts are not cut, worn, frayed,
Belts are
or cracked. Replace if damaged. At a point
damaged or belt
halfway between the motor pulley and fan
depresses more
pulley, press the belt by hand. Belt should
than ½ inch.
not depress more than ½ inch. Adjust if
loose.
c.
Adjust belts (para 4-69 and 4-75).
d.
Replace belt if damaged (para 4-69 and
4-75).
17
Quarterly
Evaporator
a.
Access motor (para 4-70).
Motor
b.
Check motor for rotational freedom by
There is stiffness
spinning shaft. If there is stiffness or
or binding, or
binding, replace motor. Check motor
there is excessive
bearings for shaft end play. If there is
end play in motor
excessive end play, replace motor.
bearings.
c.
Lubricate motor (para 4-2).
d.
To repair motor contact Direct Support
Maintenance.
e.
Replace motor if damaged (para 4-70).
Motor is
damaged.
18
Quarterly
Evaporator
a.
Access fan (para 4-71).
Fan
b.
Check fan for cracked or broken blades.
Fan blades are
Replace if damaged.
cracked or
broken.
c.
Repair fan (para 4-71).
d.
Replace fan if damaged (para 4-71).
Fan is damaged.
4-18
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