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TM 5-4120-393-14
5-26. Actuating Cylinder
This task covers:
a. Inspection
c. Installation
b. Removal
Initial setup.
Tools:
Tool kit, service, refrigeration unit NSN 5180-00-596-1474
Personnel: 1
Materials:
Rags (Appendix E, item 9)
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 lower front panel. See para 4-24.
3.  Remove condenser fans and motor. See para 4-60.
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.
INSPECTION
1.
Check actuating cylinder for signs of leakage. If leakage is suspected, leak test per paragraph 5-12.
2.
Check that attaching nuts, linkage connection, and flare nut are in place and secure. Tighten loose parts and replace
if missing.
3.
Check that capillary tubing is not kinked or mashed closed. Replace if damaged.
REMOVAL
1.
Discharge the refrigerant system. See para 5-9.
2.
Using wrench, loosen flare nut (1) and slip away from cylinder (2) flare connection.
3.
Using screwdriver and wrench, remove three screws (3), eight washers (5), and three nuts (4) from linkage arms (6)
and (7).
4.
Using screwdriver remove four screws (8) and remove cylinder (2) and mounting bracket (11) from unit.
5.
Using wrench, remove two nuts (9) and washers (10) from actuator (2) mounting studs.
5-61

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