Quantcast Repair F-20 Mechanical Freezer - Refrigeration Evaporator Coil.

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TM 55-1905-223-24-18-2
3-81. Repair F-20 Mechanical Freezer - Refrigeration Evaporator Coil. (Figure 3-79)
This task covers:
a. Disassembly
b. Repair
c. Assembly
INITIAL SETUP:
Tools
Equipment Condition
Tool kit, general mechanic's,
Mechanical freezer removed, para 2-71 .
Tool kit, electrician's,
Materials/Parts
Refrigeration evaporator coil
P/N D20494
DISASSEMBLY
a.
Remove machine screw (17), captive wing screw (15), and lanyard (16).
b.
Remove machine screw (33), tinnerman (30) and bottom housing (18).
c.
Remove machine screw (4), hanger (3) and coil assembly (31).
d.
Remove machine screws (12) and junction box cover (11).
e.
Remove harness lead (5), snap bushing (7) and strain relief (6).
f.
Remove machine screws (2), whiz nut (10), terminal block (9) and junction box (28).
g.
Remove machine screw (13), fan guard (14), fan (20) and motor mount (22).
h.
Remove motor harness (29).
i.
Remove machine screw (19) and motor (21).
j.
Remove heater clip (23) and defrost heater (24).
k.
Remove machine screw (27) and thermostatic switches (26, 25).
REPAIR
Repair at this level of maintenance is by replacement of worn or defective parts.


 


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