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 TM 5-4120-393-14
4-33.
Fresh Air Damper
This task covers:
a. Removal
c. Cleaning
e. Replace
g. Installation
b. Disassembly
d. Inspection
f. Reassembly
Initial setup.
Tools:
Tool kit, service, refrigeration unit NSN 5180-00-596-1474
Personnel:
1
Materials:
Rags (Appendix E, item 9)
Dry Cleaning Solvent (Appendix E, item 19)
Equipment condition:
1. Turn unit power off at power source. If there is a chance that it will be turned on, also disconnect power cable to
air conditioner.
2. Remove conditioned air intake grille(s). See para 4-22.
3. Remove conditioned air filter(s). See para 4-30.
4. Remove fresh air filter and frame. See para 4-31.
General Safety Instructions:
WARNING
Disconnect input power to the air conditioner before performing any internal
maintenance. Voltages used can KILL. Shutting the unit off at the control panel
does not disconnect unit power.
REMOVAL
1.
Using two wrenches, remove cap screw (1), bushing (2), washer (3), and nut (4) from actuator link arm (5).
2.
Using screwdriver, remove eight screws (6) and lock washers (7), from damper door (8) hinges.
3.
Remove fresh air damper door (8).
4.
Using two wrenches, remove cap screw (9), bushing (10), washer (11), and nut (12) from link arm (13).
5.
Remove link arm (13).
6.
Using two wrenches, remove cap screw (14), flat washer (15), lock washer (16), and nut (17).
7.
Remove gear arm assembly (18), spring washers (19), and spacers (20).
4-66
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