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4-10
Component Teardown
Defrost Thermostat Removal
The defrost thermostat is secured with a retaining clip to
the upper left corner of the evaporator assembly.
To remove the defrost thermostat:
1. Remove the evaporator cover.
2. Disconnect the defrost thermostat wire leads from
the wire harness. (See Figure 5-20)
3. Pull the defrost thermostat off of the evaporator
tubing.
Defrost Heater Removal
The defrost heater is secured with two aluminum straps
to the bottom tube of the evaporator assembly.
To remove the defrost heater:
1. Remove the evaporator cover.
2. Disconnect the defrost heater wire leads from the
wire harness. (See Figure 5-21)
3. Release the aluminum straps securing the defrost
heater to the bottom of the evaporator assembly.
4. Remove the styrofoam insulators from both sides of
the evaporator.
5. Pull defrost heater from evaporator assembly.
Evaporator Removal
The evaporator sets upon the two screw standoffs
mounted to the back wall of the freezer compartment.
Two pieces of styrofoam are pressed between the evap-
orator assembly and the sidewalls of the unit, securing
the assembly in position. (See Figure 5-22)
To remove the evaporator:
1. Remove the evaporator cover.
2. Remove the styrofoam insulators from both sides of
the evaporator.
3. Remove the defrost thermostat and defrost heater.
4. Recover refrigerant by using EPA approved
recovery system.
NOTE: Whenever the sealed system is opened the
filter-drier must be replaced.
5. Remove the filter-drier.
6. Cut suction line about 1” from compressor.
7. Straighten the tubing, remove the foam sleeve, and
carefully feed the heat exchanger through the
cabinet while pulling up on the evaporator.
Figure 5-21. Defrost Heater Removal
Figure 5-22. Evaporator Removal
Disconnect Here
Styrofoam
Aluminum Straps
Defrost Heater
Styrofoam
Screw Standoffs
Heat Exchanger
Figure 5-20. Defrost Thermostat Removal
Disconnect Here
Defrost
Thermostat