307C Excavator Machine Systems Caterpillar

Installation Procedure

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Personal injury can result from contact with refrigerant. Contact with refrigerant can cause frost bite. Keep face and hands away to help prevent injury. Protective goggles must always be worn when refrigerant lines are opened, even if the gauges indicate the system is empty of refrigerant. Always use precaution when a fitting is removed. Slowly loosen the fitting. If the system is still under pressure, release it slowly in a well ventilated area. Personal injury or death can result from inhaling refrigerant through a lit cigarette. Inhaling air conditioner refrigerant gas through a lit cigarette or other smoking method or inhaling fumes released from a flame contacting air conditioner refrigerant gas, can cause bodily harm or death. Do not smoke when servicing air conditioners or wherever refrigerant gas may be present. Use a certified recovery and recycling cart to properly remove the refrigerant from the air conditioning system.

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Illustration 1	g00878901

1. Position heater (15) .

2. Install bolts (14) and the washers.

3. Connect harness assemblies (10), (11), (12), (13), and (16) .

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Illustration 2	g00878900

4. Position cover (9). Install screws (8) .

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Illustration 3	g00878899

5. Install duct (7) .

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Illustration 4	g00878898

6. Connect the hoses.

7. Tighten hose clamps (5) and (6) .

8. Connect hose assemblies (3) and (4) .

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Illustration 5	g00878895

9. Position plate (2). Install bolts (1) .

10. Charge the air conditioner system. The correct charge is 1 kg (2.20 lb). Refer to Service Manual, SENR5664, "Air Conditioning and Heating Systems with R-134a Refrigerant" for the procedure. Refer to Special Publication, NEDG5065, "Air Conditioning Tools" for the tools.

11. Fill the cooling system. The cooling system contains 15 L (4 US gal) of coolant.

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1. Install the blower motor. Refer to Disassembly and Assembly, "Blower Motor - Remove and Install".
2. Install the storage box. Refer to Disassembly and Assembly, "Storage Box and Covers (Cab) Remove and Install".