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PRECAUTIONS HAC-161 < PRECAUTION > [AUTOMATIC AIR CONDITIONER] C D E F G H J K L M A B HAC N O P CAUTION: The new and former refrigerant connections use different O-ring configurations. Do not confuse O- rings since they are not interchangeable. If a wrong O-ring is installed, refrigerant will leak at, or around, the connection. O-Ring Part Numbers and Specifications *: Always check with the Parts Department for the latest parts information. WARNING: Make sure all refrigerant is discharged into the recycling equipment and the pressure in the system is less than atmospheric pressure. Then gradually loosen the discharge side hose fitting and remove it. CAUTION: When replacing or cleaning refrigerant cycle components, observe the following. • When the electric compressor is removed, store it in the same position as it is when mounted on the car. Failure to do so will cause electric compressor oil to enter the low pressure chamber. • When connecting tubes, always use a torque wrench and a back-up wrench. • After disconnecting tubes, immediately plug all openings to prevent entry of dirt and moisture. • When installing an air conditioner in the vehicle, connect the pipes as the final stage of the opera- tion. Do not remove the seal caps of pipes and other components until just before required for con- nection. • Allow components stored in cool areas to warm to working area temperature before removing seal caps. This prevents condensation from forming inside A/C components. • Thoroughly remove moisture from the refrigeration system before charging the refrigerant. • Always replace used O-rings. • When connecting tube, apply the specified electric compressor oil to circle of the O-rings. Be careful not to apply electric compressor oil to threaded portion. • O-ring must be closely attached to dented portion of tube. • When replacing the O-ring, be careful not to damage O-ring and tube. • Connect tube until you hear it click, then tighten the nut or bolt by hand until snug. Make sure that the O-ring is installed to tube correctly. 13. High-pressure pipe 14. Heater hoses 15. Heater pump 16. Heater pump bracket A. Low-pressure flexible hose to elec- Connec- O-ring size Part number* D mm (in) W mm (in) New 8 92471 N8210 6.8 (0.268) 1.85 (0.0728) Former 10 J2476 89956 9.25 (0.3642) 1.78 (0.0701) New 12 92472 N8210 10.9 (0.429) 2.43 (0.0957) Former 92475 71L00 11.0 (0.433) 2.4 (0.094) New 16 92473 N8210 13.6 (0.535) 2.43 (0.0957) Former 92475 72L00 14.3 (0.563) 2.3 (0.091) New 19 92474 N8210 16.5 (0.650) 2.43 (0.0957) Former 92477 N8200 17.12 (0.6740) 1.78 (0.0701) New 24 92195 AH300 21.8 (0.858) 2.4 (0.094) SHA814E |