|
|
1B-10 AIR CONDITIONING ON-VEHICLE SERVICE Precautions for Refrigerant -134a (R-134a) This vehicle is equipped with Refrigerant-134a (R-134a) • R-134a differs entirely from R-12 in its composition and, therefore, the two should never be mixed. Al- • The pressure characteristics of R-134a differ from those of R-12. The low pressure is lower, and the R-134a Compressor oil: • The R-134a system requires a synthetic (PAG) compressor oil whereas the R-12 system requires • Compressor (PAG) oil varies according to com- pressor model. Be sure to use oil specified for the Oil Specification • The PAG compressor oil for the R-134a system tends to absorb moisture more quickly than mineral • The PAG compressor oil must be stored in metal containers, not in plastic containers. Service charge valve: • The diameter of the service charge valve for the R- 134a system is made larger than that for the R-12 • To prevent refrigerant from escaping during instal- lation and removal of charging hoses from the ser- N1A0056E Legend 1. Refrigerant line N1A0057E N1A0058E |