BRACKET 9Y6891 - Caterpillar

At operating temperature, the engine coolant is hot and under pressure.Steam can cause personal injury.Check the coolant level only after the engine has been stopped and the fill cap is cool enough to touch with your bare hand.Remove the fill cap slowly to relieve pressure.Cooling system conditioner contains alkali. Avoid contact with the skin and eyes to prevent personal injury.
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: Put identification marks on all lines, on all hoses, on all wires, and on all tubes for installation purposes. Plug all lines, hoses, and tubes. This helps to prevent fluid loss and this helps to keep contaminants from entering the system.Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.
Evacuate the air conditioner system. Refer to Service Manual, SENR5664, "Air Conditioning and Heating Systems with R-134a Refrigerant" for the correct procedure. Refer to Special Publication, NEDG5065, "Air Conditioning Tools" for the correct tools.
Illustration 1 g00563511
Disconnect the two wires (2) and (3) from the low pressure cutoff switch. Disconnect wire (4) from the switch. Remove the two air conditioning lines (1) from the expansion valve.
Illustration 2 g00563512
Loosen two hose clamps (8) and remove flexible hose (7). Remove the four bolts and washers (5). Remove adapter (6) with the seal.
Illustration 3 g00563534
Remove the four screws and washers (9). Remove the cover for air conditioning (10) .
Illustration 4 g00563537
Disconnect the two nuts (11) for the evaporator core from the expansion valve. Remove bolt (12) and remove the expansion valve.Installation Procedure
Note: Cleanliness is an important factor. Before assembly, all parts should be thoroughly cleaned in cleaning fluid. Allow the parts to air dry. Wiping cloths or rags should not be used to dry parts. Lint may be deposited on the parts which may cause later trouble. Inspect all parts. If any parts are worn or damaged, use new parts for replacement.
Check all O-ring seals for wear or damage. If necessary, replace the seals.
Illustration 5 g00563537
Install the expansion valve and install the bolt (12). Connect the two nuts for the evaporator core (11) to the expansion valve.
Illustration 6 g00563534
Install the cover (10) for the air conditioning and install