GM Service Manual Online
For 1990-2009 cars only

Proper refrigerant recovery, recycling and recharging requires the experience of a technician certified in refrigerant recovery and adherence to the instructions provided with the refrigerant recovery equipment.

The Initial Set-Up Instruction Manual, provided with the J 39500 R-134a Refrigerant Recovery, Recycling/Recharging System (ACR4), has specific details on proper evacuation and recharging procedures. For ACR4 technical assistance in the U.S., call 1-800-345-2233.

Always follow the instruction manual provided with your equipment for safe and environmentally conscientious refrigerant system service.

A/C System Oil Charge Replenishing

If oil was removed from the A/C system during the recovery process or during component replacement, the oil must be replenished.

Compressor systems require 250 ml (9 oz) of PAG synthetic oil. Add oil as follows when replacing the A/C system components:

Refrigerant Oil Distribution

Replaced Component

Oil to Add ml (oz)

Compressor

If less than 30 ml (1 oz) was drained, add 60 (2). If more than 30 ml (1 oz) was drained, add equal amount.

Condenser

30 (1)

Evaporator

90 (3)

Receiver/Dehydrator

30 (1) plus amount removed