CORE AS-AFTERCOOLER 1673911 - Caterpillar

Always wear goggles when the air conditioning system is opened. This system is charged with Freon-12 (CCL2F2-Dichlorodifluoromethane) which is not toxic or flammable. But, there is a reason for caution. When Freon-12 makes contact with a flame, lethal PHOSGENE gas is made. INHALING FREON THROUGH A LIGHTED CIGARETTE CAN CAUSE VIOLENT ILLNESS. This system is under pressure at all times, engine running or not. HEAT MUST NEVER BE PUT ON A CHARGED SYSTEM. See Air Conditioning And Heating Service Manual, Form No. SENR3334 for more information on procedures and safety requirements on removal and installation of lines and refrigerant from the system.
1. Purge the air conditioning system. See the topic, "Purging The System" in the Air Conditioning And Heating Service Manual, Form No. SENR3334, for the correct procedure. 2. Loosen two bolts (2), and one additional bolt (4).3. Remove bolt and washer (5).4. Rotate refrigerant compressor (1) toward the engine.5. Slip V-belt (3) from the pulley of refrigerant compressor (1). 6. Remove electrical connector (6) from the support, and disconnect it.7. Disconnect two refrigerant lines (7).8. Support the compressor and remove the washer, nut, and bolt (4).9. Remove refrigerant compressor (1). Install the refrigerant compressor in the reverse order of removal.10. Charge the system. See the topics "Evacuating The System" and "Complete Charge Of System" in the Air Conditioning And Heating Service Manual, Form No. SENR3334, for the correct procedures.11. Adjust the V-belts. See "Alternator, Fan, and Air Conditioner Belts" in the Operation & Maintenance Manual.