TURBOCHARGER GP 3940376 - Caterpillar

Note: The following procedure gives details of installing an air conditioner for the first time. The air conditioner is supplied as a kit and can be purchased from a Caterpillar Dealer. Refer to the Parts Manual, "Air Conditioner Ar". The air conditioner can only be installed with a cab heater which has been installed at the factory. Use the Parts Manual and the Electrical Schematic in conjunction with this procedure.
Install the refrigerant condenser. Refer to Disassembly and Assembly, "Refrigerant Condenser - Install" and the Parts Manual, "Air Conditioner Ar".
Install the refrigerant compressor. Refer to Disassembly and Assembly, "Refrigerant Compressor- Install" and the Parts Manual, "Air Conditioner Ar ".
Install the evaporator coil. Refer to Disassembly and Assembly, "Evaporator Coil - Install" and the Parts Manual, "Air Conditioner Ar".
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Install accumulator (15). Refer to illustration 668 for the location and the orientation of the accumulator.
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Remove the plastic cover from the panel. Find the connector in the main harness for the air conditioner. Refer to the Electrical Schematic for the color codes for the connector wires. Install switch (14).
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Install thermostatic switch (11) before connecting the main cab harness (13). Feed capillary tube (12) through the hole in the heater group to the evaporator coil. Refer to Disassembly and Assembly, "Evaporator Coil - Install" for the installation dimension of the capillary tube.
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Remove three plastic plugs from the base of the heater group and install the three tubes (10). The tubes will allow any condensation to drain.
Use the following steps to install all hoses, and tubes. Refer to illustration 668 which shows the correct routing. Refer to Parts Manual, "Air Conditioner Ar" for all the part numbers of the components which include elbows, connectors, switches and tee's which are installed in the major components.
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Connect hose (9) from the refrigerant compressor to the top of the refrigerant condenser.
Connect hose (8) from the accumulator to the refrigerant compressor.
Connect hose (7) from the evaporator coil to the accumulator.
Connect hose (6) from the bottom of the refrigerant condenser to the evaporator coil.
Use the following steps to install the air conditioner harness. Refer to illustration 669 which shows the correct routing. Refer to Parts Manual, "Air Conditioner Ar" for all the part numbers of the components.
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Connect the harness assembly at location (5) for the electronic control group.
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Connect the harness assembly at location (4) for the high pressure switch.
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Connect the harness assembly at location (3) which is at the underside of the intake hose from the air cleaner to the turbocharger. The harness assembly connects the air conditioner harness to the main harness for the machine.
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Connect the harness assembly at location (2) at the compressor clutch.
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Connect the harness assembly at location (1) for the low pressure switch.
Install the decals for the refrigerant. Refer to Operation and Maintenance Manual, "Saftey Section - Additional Messages".
Charge the air conditioner system. The correct charge is 0.8 kg (1.8 lb). Refer to Service Manual, "Air Conditioning and Heating Systems with R-134a Refrigerant" for the