SHIM .005 in.(.127 mm) thick 9D2592 - Caterpillar

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: The refrigerant dryer contains the desiccant that dries the liquid refrigerant.The refrigerant dryer is mounted on the inside of the engine compartment near the rear of the engine valve cover. Open the right-hand engine compartment door to access the refrigerant dryer.
Illustration 1 g03680489
Refrigerant dryer at rear of engine compartment
Stop the engine. Allow the air conditioning system to remain inactive for 5 minutes in order to equalize the pressure.Refer to Service Manual, UENR4125, "Air Conditioning and Heating with R-134a for All Caterpillar Machines", "In-Line Refrigerant Dryer - Remove and Install" for the replacement procedure of the in-line refrigerant dryer.Note: A qualified mechanic should replace the components of the refrigerant system since special tooling and training are required.