Air Conditioning and Heating R-12 All Caterpillar Machines – In-Line Refrigerant Dryer – Remove and Install



Illustration 1 g00654556

Typical In-Line Dryer

(1) Inlet hose with air conditioner quick disconnects

(2) Outlet hose with air conditioner quick disconnects

In order to replace the in-line dryer and the orifice tube that is in the in-line dryer, use the procedure that follows.

Before any service work is performed on the air conditioning system, refer to the Service Manual, SENR3334, “Machine Preparation for Troubleshooting” section in Testing and Adjusting.

  1. Stop the engine for five minutes in order to equalize the pressure in the air conditioning system.
  1. Disconnect the inlet hose (1) from the old in-line dryer.
  1. Connect the inlet hose that was disconnected in Step 2 to the inlet on the new in-line dryer.
  1. Start the engine and operate the air conditioning system.
  1. With the air conditioning system in operation, disconnect the outlet hose (2) from the old in-line dryer.
  1. Stop the engine for five minutes in order to equalize the pressure in the air conditioning system.
  1. Connect the outlet hose (2) that was disconnected in Step 5 to the outlet on the new in-line dryer.

    Note: Do not add oil to the in-line dryer.

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