303.5D, 304D, 305.5D and 305D Mini Hydraulic Excavators Engine Supplement Refrigerant Compressor - Remove and Install Caterpillar


Refrigerant Compressor - Remove and Install
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1.1. Removal Procedure
2.1. Installation Procedure

Removal Procedure

Start By:

  1. Remove the counterweight. Refer to, "Counterweight - Remove and Install".

    ------ WARNING! ------

    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. 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, NEDG2500, "Air Conditioning Tools" for the correct tools.

  1. Remove the belt for the refrigerant compressor. Refer to Operation and Maintenance Manual, "Belt - Inspect/Adjust/Replace".



    Illustration 1g01221820

  1. Disconnect harness assemblies (1) and (2). Disconnect hose assemblies (3) and (5). Remove bolts (4), (7), and (8). Remove refrigerant compressor (6) .

Installation Procedure




    Illustration 2g01221820

  1. Position refrigerant compressor (6) and install bolts (4), (7), and (8). Connect hose assemblies (3) and (5). Connect harness assemblies (1) and (2) .

  1. Install the belt for the refrigerant compressor. Refer to Operation and Maintenance Manual, "Belt - Inspect/Adjust/Replace".

  1. 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, NEDG2500, "Air Conditioning Tools" for the correct tools.

End By: Install the counterweight. Refer to, "Counterweight - Remove and Install".

Information System:

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