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Download Chapter 2 -- Air Conditioning Component Service
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2 TABLE OF CONTENTS SPECIFICATIONS ................................................................................................................................................... 4 SPECIAL TORQUES ............................................................................................................................................... 4 SPECIAL TOOLS .................................................................................................................................................... 4 SAFETY PROCEDURES ........................................................................................................................................ 8 AIR CONDITIONER SYSTEM REFRIGERANT RECOVERY ................................................................................. 9 RECOVERING PURE 134A REFRIGERANT ....................................................................................................... 11 RECOVERING CONTAMINATED REFRIGERANT WITH OEM1691 .................................................................. 15 Preparing the Tank ............................................................................................................................................ 15 Recovery Process .............................................................................................................................................. 17 AIR CONDITIONER SYSTEM EVACUATION AND RECHARGING .................................................................... 22 TJ AIR CONDITIONING TEMPERATURE/PRESSURE CHART .......................................................................... 27 LEAK DETECTION ................................................................................................................................................ Electronic Testing with FNH00855 ..................................................................................................................... Florescent Leak Detection ................................................................................................................................. Fluorescent Dye Injection .................................................................................................................................. Recovery Station Dye Injector Tool with a System in a Vacuum ..................................................................... Recovery Station Dye Injector Tool with a Charged System ........................................................................... Quick and Easy Dye Injector Tool with a Charged System .............................................................................. Compressor Oil Port ......................................................................................................................................... SP-20 PAG Oil Return Bottle ........................................................................................................................... Fluorescent Leak Testing ................................................................................................................................... 28 29 29 30 30 31 32 33 34 35 A/C SYSTEM FLUSHING PROCEDURE .............................................................................................................. Required Tools ................................................................................................................................................... Precautions ........................................................................................................................................................ Component Flushing Procedure with Power Flush 17550 ................................................................................. Complete Circuit Flushing Procedure with Power Flush 17550 ......................................................................... Back Flushing the Thermal Expansion Valve or Refrigerant Line ...................................................................... Post Flushing Procedures .................................................................................................................................. Flushing Solvent Disposal .................................................................................................................................. 36 37 38 39 42 46 48 49 A/C SYSTEM COMPONENTS .............................................................................................................................. Cab HVAC Box Components - Automatic Temperature Control ....................................................................... Cab HVAC Components - Standard Systems ................................................................................................... TJ 275/325 Chassis Components ...................................................................................................................... TJ 375/425/450 Chassis Components ............................................................................................................... 50 50 51 52 54 A/C COMPRESSOR CLUTCH .............................................................................................................................. Clutch Removal .................................................................................................................................................. Exploded View of Clutch .................................................................................................................................... Compressor Clutch Replacement ...................................................................................................................... 56 56 59 60 7-90941NH Issued 9-01
