TK741, TK751 and TK752 Track Feller Bunchers Engine Supplement Caterpillar

Removal 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.

Note: Put identification on all lines, hoses, wires, and tubes for installation purposes. Use caps and plugs on all lines, hoses, and tubes in order to prevent fluid loss or contamination of the systems.

1. Move the battery disconnect switch to the OFF position.

2. Recover the air conditioner refrigerant from the air conditioner system. Refer to Service Manual, SENR5664, "Air Conditioning and Heating Systems with R-134a Refrigerant" for the correct procedure. Refer to Special Publication, NEDG5065, "Air Conditioning Tools" for the correct tools.

3. Remove the serpentine belt. Refer to Operation and Maintenance Manual, "Belt - Inspect/Adjust/Replace".

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Illustration 1	g01015964

4. Disconnect hose assemblies (1) and (2). Disconnect harness assembly (5). Remove mounting bolts (4) and remove refrigerant compressor (3) .

Installation Procedure

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Illustration 2	g01015964

1. Install refrigerant compressor (3) and install mounting bolts (4). Connect hose assemblies (1) and (2). Connect harness assembly (5) .

2. Install the serpentine belt. Refer to Operation and Maintenance Manual, "Belt - Inspect/Adjust/Replace".

3. Charge the air conditioner system. Refer to Service Manual, SENR5664, "Air Conditioning and Heating Systems with R-134a Refrigerant" for the correct procedure. Refer to Special Publication, NEDG5065, "Air Conditioning Tools" for the correct tools.

4. Move the battery disconnect switch to the ON position.