A/C - Revised System Evacuation Using ACR4

Number: 93-148-1B
Section: 1B
Date: MARCH 1993
Corporate Bulletin No.: 331205R
ASE No.: A7

Subject:
AIR CONDITIONING SYSTEM EVACUATION USING ACR4

Model and Year:
1993 CAMARO, 1993 G VAN AND LUMINA APV

SERVICE UPDATE

This bulletin serves to cancel and supersede the first paragraph of the "Evacuation" procedures under "Refrigerant Recovery and Recycling, Adding Oil, and Evacuation and Recharging Procedures" in Section 1B of all 1993 G and U-Vans and F-Car Service Manuals. The first paragraph under "Evacuation" should read as follows:

The ACR4 unit tank must contain sufficient R-134a refrigerant for A/C system charging. Check the amount of refrigerant in the tank by simultaneously pressing "RESET" and "ENTER" on the key pad to enter the diagnostic mode. Once in the diagnostic mode, press "7". When "7" is pressed, the ACR4 unit will display the amount of R-134a refrigerant available in the tank. If less than 3.6 kg (8 lbs.) is displayed, add new refrigerant to the tank. Refer to the manufacturer's instructions for adding refrigerant.