REMOVAL - TM-55-1905-223-24-170262

TM 55-1905-223-24-17

Materials/Parts (cont'd)

Compressor piston P/N 6-D-75-181

Piston ring P/N AU-50CP-245

Piston ring P/N AU-50CP-355

Valve plate package P/N 6-D-75-253

Valve plate assembly P/N 6-D-75-163

Check valve piston P/N 06DA-502-322

Check valve spring P/N 6-D-75-2081

Compressor oil, Item 8, Appendix C

R-22 refrigerant, Item 7, Appendix C

Mineral spirits, Item 9, Appendix C

REMOVAL

WARNING

Make sure electrical power is OFF to avoid personal injury.

PRESSURIZED GAS HAZARD. Make sure the compressor has been isolated

from system and refrigerant removed before opening.

CAUTION

If the Accommodations Unit's (A/C-2) main power breaker, or disconnect switch,

has been turned OFF for over 4 hours, the unit's HEAT/OFF/COOL manual switch

on thermostat must remain OFF for a period of 5 hours after turning main power

breaker, or disconnect, ON. This energizes the compressor crankcase heater and

allows the oil time to re-heat.

a. Isolate and remove refrigerant from compressor as follows:

(1)

Connect a portable gauge manifold from the refrigeration tool kit to the compressor as

follows (refer to FIGURES 4-16, 4-17, and 4-18):

NOTE

If the change has not been lost due to a leak or break in line, this procedure will

save the refrigerant remaining in the system.

(a) Connect the combination gauge hoseline (7, FIGURE 4-16) to the gauge port

connection on the compressor suction valve (7, FIGURE 4-17).

4-55