Checking the A/C System 1991-1992
Preparations for A/C system retrofit, 1991-1992Move car into workshop
If it is cold outside, move the car into the workshop the night before, if possible, but at least two hours before starting work. The ambient temperature should be preferably 68° F (20° C).
CHECKING the A/C system, 1991-1992
B1
Start engine
- Turn on A/C system, select hightest fan speed, turn temperature selector to maximum cooling (not "REC" recirculation) and leave front doors or side windows open.
- Check that the compressor does not start, refrigerant may have leaked out.
B2
If the compressor starts, there is refrigerant in the system. Proceed as follows:
- Turn off engine.
- Carry out leak test with leak detector and note leaks
- Connect recovery/recycling station for R12.
- Recover R12 from the A/C system. Evacuate A/C system until there is a vacuum.
- Disconnect recovery/recycling station.
- Repair/replace any leaking components (except for corresponding parts included in the kit).
B3
If the compressor does not start when tested:
- Turn engine off
- Carry out leak test with leak detector and note leaks.
- Check for visible leaks and other visible faults in the system, e.g., loose electrical connections, etc.
- Connect recovery/recycling station for R12.
- Revover R12 from the A/C system. Recover and evacuate A/C system until there is a vacuum or until system is empty.
- Disconnect recovery/recycling station.
- Repair/replace any leaking components (except for corresponding parts included in the kit).
NOTE:
On certain cars there is not enough space to connect the recovery/recycling station to the service valve. If so, undo the low pressure switch and use that valve.