Beretta V6-191 3.1L (1990)
Service Port HVAC: Technical Service Bulletins
A/C - Service Using Low Side Schrader-Type Valve
Number:
90-276-1B
Section:
1B
Date:
June 1990
Corporate Bulletin No.: 031206
Subject:
AIR CONDITIONING SYSTEM PROCEDURE AND TORQUE SPECIFICATIONS
Model and Year:
1990 CORSICA AND BERETTA WITH 2.2L (VIN CODE G) AND 3.1L (VIN CODE T) ENGINE
1990 BERETTA (GTZ ONLY) WITH 2.3L (VIN CODE A) ENGINE
TO:
ALL CHEVROLET DEALERS
1990 CHEVROLET BERETTA GTZ
The A/C system does not have a high side schrader-type valve service fitting. All A/C refrigerant recovery, evacuation and charging procedures must be
performed using low side schrader-type valve service fitting located on the accumulator as shown in Figure 1. A/C high side pressure may be read using
a Tech-1 (or equivalent) diagnostic tool. The transducer, shown in Figure 2, must be properly installed for proper A/C system operation. Proper
transducer torque value is 4.8 N-m (42 lb.in.)
