TM 9-4520-258-14
4-28.
THERMOSTAT ASSEMBLY.
This task consists of:
a. Removal
b. Disassembly
c. Repair
d. Assembly
e. Installation
INITIAL SETUP:
Tools:
Material/Parts:
Tool Box, General Mechanics (Item 1, App B)
Lockwasher (Item 12, App H)
Tool Kit, Electrical Connector Repair (Item 2,
Lockwasher (Item 14, App H)
App B)
Wire Tags (Item 9, App E)
Wire Ties (Item 11, App E)
Equipment Condition:
Unit disconnected from power source (para 2-8)
General Safety Requirements:
Supply duct removed (para 4-15)
WARNING
Supply outlet screen removed (para 4-23)
Contact with hot components can cause burns.
Allow unit to cool down before attempting
service/inspection/maintenance activity.
WARNING
Contact with hot components can cause burns. Allow unit to cool down before attempting
service/inspection/ maintenance activity.
NOTE
Disassemble only to level required to make repairs.
a.
Removal (Refer to Figure 4-43)
(1)
Open right rear side door (1).
(2)
Tag and disconnect wires (2), (3), (4), (5) and (6) from terminal board TB3 (7) as follows:
(a)
Disconnect wire (2), S2-3 from TB3-9.
(b)
Disconnect wire (3), S2-2 from TB3-10.
(c)
Disconnect wire (4), S2-1 from TB3-8.
(d)
Disconnect wire (5), S3-1 from TB3-4.
(e)
Disconnect wire (6), S3-3 from TB3-5.
(3)
Reconnect all other wires.
(4)
Remove wire ties (8) as required.
4-124
