MT735, MT745, MT755 and MT765 Agricultural Tractors Engine Supplement Caterpillar

Removal Procedure

Show/hide table

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.

1. Raise the hood. Refer to Operation and Maintenance Manual, "Hood (Engine Compartment) - Raise/Lower".

2. Remove the air conditioner belt. Refer to Operation and Maintenance Manual, "Belt (Air Conditioner and Fan) - Replace".

3. Recover the air conditioner refrigerant from the air conditioner system. The capacity is 2.2 kg (4.85 lb). Refer to Service Manual, SENR5664, "Air Conditioning and Heating Systems with R-134a Refrigerant". Refer to Special Publication, NEDG5065, "Air Conditioning Tools".

Show/hide table



Illustration 1	g00844206

4. Disconnect hose assemblies (4) and (5) .

5. Remove the cable strap and disconnect the wiring (1) .

6. Remove bolts (2) and refrigerant compressor (3) .

Installation Procedure

Note: Check the O-ring seals for wear or for damage. Replace the O-ring seals, if necessary.

Show/hide table



Illustration 2	g00844206

1. Install refrigerant compressor (3) with bolts (2) .

2. Connect hose assemblies (5) and (4) .

3. Connect wiring (1) and install the cable strap.

4. Charge the air conditioner system. The correct charge is 2.2 kg (4.85 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.

5. Install the air conditioner belt. Refer to Operation and Maintenance Manual, "Belt (Air Conditioner and Fan) - Replace".

6. Lower the hood. Refer to Operation and Maintenance Manual, "Hood (Engine Compartment) - Raise/Lower".