Colt Vista 2WD L4-1795cc 1.8L SOHC (1993)
Technical Service Bulletin # 241796
Date: 961115
R-12 to R-134A A/C Adaptation Procedure
NO: 24-17-96
GROUP: Heater & A/C
DATE: Nov. 15, 1996
SUBJECT:
R-12 to R-134a A/C Adaptation Service Procedure
THIS PROCEDURE SHOULD ONLY BE PERFORMED ON VEHICLES TO MAINTAIN AIR CONDITIONING OPERATION WHEN R-12
REFRIGERANT IS NO LONGER AVAILABLE. COOLING PERFORMANCE MAY BE LESS THAN ORIGINAL SYSTEM DEPENDENT ON
OPERATING CONDITIONS AND ALSO MAY VARY BETWEEN VEHICLE MODELS.
MODELS:
1989 - 1992
(B2) Colt/Summit
1984 - 1991
(B3) Colt Vista Wagon
1987
(B4) Ram 50
1990 - 1993
(B4) Ram 50
1984 - 1990
(B5) Conquest
1987 - 1990
(B6) Raider
1991 - 1993
(B7) Stealth
1992 - 1993
(B8) Colt Vista Wagon/Summit Wagon
1993
(B9) Colt/Summit
1989 - 1994
(BD) Laser/Talon
NOTE:
THIS BULLETIN EXCLUDES 1994 (BD) VEHICLES BUILT AFTER 12/22/93, VIN # RE084552. THESE VEHICLES ARE EQUIPPED WITH
R-134a REFRIGERANT.
DISCUSSION:
This bulletin involves adapting vehicles with R-12 refrigerant A/C systems to operate using R-134a.
NOTE:
WHEN SERVICING THE AIR CONDITIONING SYSTEM, FOLLOW ALL CAUTIONS AND WARNINGS AS OUTLINED IN THE
APPROPRIATE SERVICE MANUAL.
POLICY: Information Only
A. Initial System Operation and Preparation
1.
Review the R-134a Adaptation Component and "0" Ring Location Charts and installation notes to determine the parts required for the particular
vehicle being adapted.
2.
If the system is functioning properly, proceed to step A3. If the system is not functioning, determine the cause. If the system has no charge, charge
the system to 50 psi with R-12 refrigerant. Identify any leaks and/or failed components. If the system is still not functioning, proceed to Step A4.
3.
Operate the A/C system at engine idle speed for 15 minutes on high blower speed and outside air mode to maximize the oil in the compressor.
4.
Evacuate the system using an approved recycling/recovery station.
NOTE:
WHEN REPLACING ANY COMPONENTS AND/OR OPENING ANY LINE FITTINGS, NEW R-134a COMPATIBLE 0-RINGS MUST BE
INSTALLED.
5.
Repair or replace any failed components.
B. Conversion Procedure
1.
Remove the compressor and drain the mineral oil. Inspect oil for any unusual metal content. If the compressor has to be replaced because it has
failed, it will not be necessary to drain the mineral oil from the old compressor. However, the mineral oil must be drained from the new
compressor.
NOTE:
