TM 9-4120-411-14
5.17 COMPRESSOR AND REVERSING VALVE ASSEMBLY REPLACEMENT.
THIS TASK COVERS:
a. Removal
b. Installation
Initial Setup:
Tools
Materials/Parts
Refrigeration Unit Service Tool Kit
Lock Washers (qty 8)
Lock Washers (qty 6)
Materials/Parts
Lock Washer
Insulation Tape
Lock Washers (qty 2)
Personnel Required
Lock Washers (qty 2)
2
WARNING
Rotating parts and lethal voltage levels are used in operating the FDECU. Be sure
power source is disconnected. Injury or death can occur if connected to power
source.
(1) Shutdown the FDECU per paragraph 2.4 and disconnect it from power source.
WARNING
The FDECU cover is heavy. Be sure the cover retaining rod is in place and
properly secured with hair pin cotter. Injury can occur if cover drops.
(2)
Raise and secure cover to access compressor and reversing valve assembly (1).
(3)
Loosen eight captive screws (2) and carefully pull the electrical assembly (3) out.
(4)
(5)
Remove two nuts (4), lock washers (5), flat washers (6), and screws (7). Discard lock washers.
(6)
Remove screw (8) and reversing valve guard (9).
(7)
Tag and disconnect wire leads connected to compressor and reversing valve assembly (1).
(8)
Remove six screws (10) and lock washers (11). Discard lock washers.
(9)
(FDECU-2 AND FDECU-3 ONLY) Remove two screws (12), lock washers (13), flat washers (14), and
compressor brace (15). Discard lock washers.
(10) (FDECU-2 AND FDECU-3 ONLY) Remove two nuts (16), lock washers (17), and screws (18). Discard
lock washers.
(11) (FDECU-2 AND FDECU-3 ONLY) Remove screw (19), lock washer (20), flat washer (21), and compressor
bracket (22). Discard lock washer.
(12) (FDECU-4 AND THEREAFTER) Remove two nuts (12A), lock washers (13A), flat washers (14A), screws
(15A), flat washers (16A), clamp (17A) and compressor brace (18A). Discard lock washers.
5-36 Change 1