B. Testing A/C System For Refrigerant Leaks

1. If A/C system is void of any R12 refrigerant or the compressor will not engage, check refrigerant compressor for binding by rotating A/C compressor by hand.





2. If A/C compressor binding is not present, fill A/C system with fresh/recycled refrigerant and perform refrigerant leak test. (Figure 1).

CAUTION!:
Observe specifications on Fill Capacity Label.

3. Check for proper operation of A/C system.

Models 124, 129
If parts require replacement, only R134a-type components are to be installed.

Models 107,116, 123, 126, 201
If the A/C lines, condenser or evaporator require replacement, please continue with "C. Removal of Mineral Oil from A/C System".

Note:
If replacing the A/C compressor, use a compressor designed for refrigerant R134 if available. If a R134a compressor is not available as a spare part, be certain to drain the mineral oil from the new R12 compressor prior to installation.

CAUTION!
In this case, do not refill A/C system with R12, please continue with "D. Replacing Receiver/Drier".