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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
23
Quarterly
Compressor
a.
Access heater (para 4-81).
Crankcase
Heater
b.
Visually inspect for damage.
c.
Replace heater if damaged (para 4-81).
Heater is
damaged.
24
Quarterly
Heat Control
a.
Access heat control thermostat (para 4-85).
Thermostat
b.
Check that leads are properly connected
Leads are
(see Figure FO-3).
improperly
connected.
c.
Check that sensing coil is not damaged.
Sensing coil is
damaged.
d.
Replace heat control thermostat if damaged
Heat control
(para 4-85).
thermostat is
damaged.
25
Quarterly
Low Ambient
a.
Access low ambient temperature thermostat
Temperature
(para 4-86).
Thermostat
b.
Check that leads are properly connected
Leads are
(see Figure FO-3).
improperly
connected.
c.
Check that sensing coil is not damaged.
Sensing coil is
damaged.
d.
Replace low ambient temperature thermostat
Thermostat is
(para 4-86).
damaged.
26
Quarterly
Cool Control
a.
Access cool control thermostat (para 4-87).
Thermostat
b.
Check that leads are properly connected
Leads are
(see Figure FO-3).
improperly
connected.
c.
Check that sensing coil is not damaged.
Sensing coil is
damaged.
d.
Replace cool control thermostat if damaged
Cool control
(para 4-87).
thermostat is
damaged.
27
Quarterly
High/Low
a.
Access switch, remove right front condenser
Refrigerant
panel (para 4-11).
and Low Oil
Pressure
Switches
b.
Check that clamp is not dented, broken, or
Switches are
split. Check that switch cover is not dented,
damaged.
broken, or cracked.
4-20
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