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Effective July 1, 1992 regulations prohibit the venting of any refrigerant into the atmosphere. Refer to Caterpillar publications Service Manuals, SENR3334, SENR5664, and NEDG5065 for the proper procedure, the proper equipment, and the proper tools needed in order to reclaim refrigerant from any Caterpillar equipment. |
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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: Recover the air conditioner refrigerant before any hose assemblies are loosened or any bolts are loosened.
- Recover the air conditioner refrigerant from the air conditioning system. Refer to Service Manual, SENR5664, "Air Conditioning and Heating Systems with R-134a Refrigerant" for the procedure. Refer to Special Publication, NEDG2500, "Air Conditioning Tools" for the tools.
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Illustration 1 g01592400 - Remove screws (1) and remove cover (2).
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Illustration 2 g01592406 - Disconnect harness assembly (3) from pressure switch (4). Remove pressure switch (4).
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Illustration 3 g00964067 - Remove O-ring seal (5) from pressure switch (4).
- Install O-ring seal (5) onto pressure switch (4).
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Illustration 5 g01592406 - Install pressure switch (4). Connect harness assembly (3).
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Illustration 6 g01592400 - Position cover (2) and install screws (1).
- Charge the air conditioning system. Refer to Service Manual, SENR5664, "Air Conditioning and Heating Systems with R-134a Refrigerant" for the procedure. Refer to Special Publication, NEDG2500, "Air Conditioning Tools" for the tools.
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| Illustration 4 | g00964067 |
Note: Check the O-ring seal for damage. If necessary, replace the O-ring seal.