A/C - (R-134A) Information
TSB No. TS 7-06 08153Section Title: Miscellaneous
Division: Automotive
Category: Technical
SUBJECT:
MODIFICATION OF AIR CONDITIONER
MODEL: SWIFT
YEAR: 1994
CONDITION:
Change in A/C System and Service Manuals.
CAUSE:
Factory Modification.
CORRECTION:
Note changes for future references.
This bulletin is to inform you of the change in the A/C System that will be taking place in the 1994 Swifts. The new system will use a new type of refrigerant called R134a, which differs from the other type of A/C System which uses R-12. This bulletin describes and identifies the new components and the precautions that must be taken when servicing this system.
CAUTION:
^ Both A/C system (R134a and R-12) use different types of compressor oil and refrigerant. Using the inappropriate part for the installed A/C system will cause damage to the A/C system, resulting in refrigerant leakage into the atmosphere.
^ All component parts are shown in this bulletin. Since these parts are not interchangeable between the two A/C systems, be sure to use the correct replacement parts by referring to the parts catalog for the vehicle being serviced.
IDENTIFICATION BETWEEN R-12 TYPE AND R-134a TYPE A/C
The type of A/C system installed on the vehicle can be identified by referring to the I.D. plates located on the vehicle frame and on the back of the compressor. Shown are their locations and appearance.
^ A/C Warning Plate
^ Compressor/Magnetic Clutch
^ Service Valves
SERVICING
IMPORTANT:
When performing any service work on an A/C system, be very careful not to let the refrigerant (R-12 or R134a) leak out into the atmosphere. The refrigerant, if leaked out or discharged, is harmful to the environment. Therefore, be sure to withdraw the refrigerant by using a Refrigerant Recovery Unit before performing any service work during which the refrigerant can leak out or be discharged.
The method and precautions to be used when recharging R-134a A/C systems and the precautions involved for handling the refrigerant container are basically the same as those for the R-12 A/C systems, except for a few differences, which are described below:
^ The operation pressure of a specified amount of added refrigerant will vary, depending on the refrigerant. For more information, refer to the "1994 SWIFT SUPPLEMENTARY SERVICE MANUAL (99501-64B20-33E).
^ Compressor oil
R-12 type R-134a type
ND-OIL 6 ND-OIL 8
^ Manifold Gauge Set
NOTE:
^ To prevent incorrect installation, the "A" connectors in each figure above are standard thread and the "B" connectors are metric thread.
^ When evacuating the R-134a type A/C system, be sure to attach a vacuum pump adapter to the vacuum pump.