PLATE 1U5812 - Caterpillar

Personal injury can result from hot coolant. Any contact with hot coolant or with steam can cause severe burns. Allow cooling system components to cool before the cooling system is drained.
System Contamination and Flush Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
(A) 153-8537
or
153-9032 Air Conditioner Flushing Unit 1
(B) 153-9033 Adapter Kit 1
(C) 153-8538 Refrigerant Flushing Solution 1
Debris in the air conditioning refrigerant circuit can cause the compressor to fail. Use the following procedure for cleaning and flushing the system.This procedure provides a method and instructions to remove contamination from the air conditioning system refrigeration circuit and individual components. A primary instance where a system flush is necessary is any time a refrigerant compressor has had an internal failure, usually indicated by a locked or seized condition. The air conditioning system refrigeration circuit and components must be cleaned and flushed to remove any particles of metal or other foreign material. Failure to flush the air conditioning circuit properly will damage or shorten the operating life of the replacement compressor.
Flushing the system is necessary if a component failure causes metal particles or other foreign material to be circulated through the system. Use the following procedure in order to flush the system.
Identify the type of refrigerant that is in the system, and then recover the refrigerant. Refer to Testing and Adjusting, "Refrigerant Recovery".
Remove the refrigerant compressor. Refer to Service Manual, UENR4125, "Refrigerant Compressor - Remove and Install" in the