Removal Procedure
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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. |
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- Purge the air conditioning system. Refer to the Air Conditioning and Heating Service Manual, SENR5664 for the correct procedure.
- Remove cover (1) and the air filter.
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| Illustration 1 | g00633286 |
- Carefully, pull thermostat tube (2) out of the evaporator core and move the tube out of the way. Be sure that the thermostat tube does not get pinched or damaged.
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| Illustration 2 | g00633288 |
- Remove the bolts, the washers and plate (3) .
- Unhook the hood latch and remove the bolts, the washers, the gasket, and cover (4) .
- Be sure that the pressure has been released from the air conditioning system. Disconnect hose (6) from expansion valve (7) .
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| Illustration 3 | g00633290 |
- Disconnect hose (10) from evaporator core (5) .
- Loosen hose clamps (11) and (12) and disconnect the two heater hoses from heater core (8) .
- Remove bolt (9) from each side of the evaporator core. Remove the core through the top opening.
- Slide heater core (8) forward and remove the core through the top opening.