Service Manual

257
Evaporator Installation
A replacement evaporator assembly (42249115) will include the following
components:
 (1) Evaporator heat exchanger assembly
 (1) Filter drier
 (1) Pre bent suction tube extension
 (1) Vibration isolator
 (2) Nylon zip tie fasteners
 (2) Pieces of permagum
1. Take the replacement evaporator and unroll the capillary tube on the heat exchanger.
2. Absolutely make sure that the ends of the capillary tube and suction line are well
capped. Wrap both ends with tape to insure that no foam enters the tubing when
passing through the ½” drilled hole. Any foam that is allowed in the tubing will
compromise the sealed system.
3. Once the new evaporator is in place, the suction line in the machine compartment will
have to be bent (thumbs and forefingers) at an angle towards the compressor.
4. Carefully recoil the capillary tube.
5. Install a new filter drier and solder the capillary and liquid line in place.
6. The kit will include a section of pre-bent suction line. The bent end will be soldered into
the compressor.
7. Use a 3/8”swedging tool to expand the opposite end of the suction extension. This will
fit over the new suction line extending into the machine compartment. This connection
can now be soldered.
8. The kit also includes a rubber vibration isolator, place this onto the heat exchanger
behind the evaporator to protect against tube rattles between the evaporator and
cabinet liner.
9. Replace the defrost thermistor and attach with the two zip lock fasteners in the kit.
10. Place one piece of permagum around the newly drilled hole for the suction line
assembly inside the interior of the cabinet. Make sure that it is worked into and around
the hole to seal off any moisture or heat.
11. Use the second piece of permagum and also work that into and around the hole in the
machine compartment where the new suction line assembly exits the liner.
12. Re-install the white foam spacers. The spacers have an off center cut on one side, place
the fat side of the spacer (with the thickest foam) towards the back wall of the liner.
13. Reassemble the coil cover and interior components in reverse order as removed.
14. Prior to reassembling the machine compartment, a thorough leak check should be
performed to verify that all joints have been soldered or brazed correctly.
15. Proceed to pull a minimum 50 Micro vacuum.
16. Recharge system with weighted charge per specification on serial plate.
17. Leak check.