VALVE GP-SOLENOID 2974207 - Caterpillar

Safety Requirements
Personal injury or death can result from contact with liquefied Carbon Dioxide (CO2).Contact of liquefied CO2 with bare skin can result in frostbite. Keep all exposed skin away from contact with liquefied CO2 with the use of proper Personal Protection Equipment (PPE).Inhaling CO2 in high enough concentrations can cause asphyxiation. Work only in well-ventilated areas.
Adhere to the following list of safety rules to perform the procedure safely as outlined in this guideline.
Contact with CO2 pellets on exposed skin should be avoided, as the low temperature, −80° C (−112° F), of the pellets can burn the skin and cause tissue injury. Never hold CO2 pellets in your bare hands.
Never point the nozzle at a person and extreme caution is required whenever there are people near the jobsite. CO2 pellets leaving the equipment may deflect within a 100 ft area of the nozzle.
Protective clothing should be worn while working. The clothing will consist of several layers, protect against the cold, and totally cover the body. The clothing should have no pockets or creases, in to prevent CO2 pellets from falling into them. Ensure that you are wearing ear and eye protection and gloves protecting against the cold.
Never work in a closed room that is not ventilated appropriately. Depending on the circumstances outside and on the size of the room, carbon dioxide can quickly displace the oxygen from the atmosphere.
Never use the equipment without first having read the operating instructions. Should there be any questions, do not hesitate to contact the manufacturer of the equipment.
The equipment must never be used by untrained personnel.
Only use the equipment on those components that are to be cleaned.
Any other person who is situated within the operating range of the equipment should respect the safety and clothing rules as mentioned above.
Never store CO2 pellets in a hermetically sealed receptacle.
Never store CO2 pellets in a cavity, a cellar, or in a closed room.
Never mix CO2 pellets into liquids.Equipment
Preparations for use of the CO2 cleaning equipment must be made according to the equipment manufacturer recommendations. There are many manufacturers of cleaning equipment available each with specific controls and procedures that must be followed in to get acceptable results. Illustration 4 shows a typical CO2 cleaning system.
Illustration 4 g02800141
Typical CO2 cleaning system.
Cleaning Procedure
Note: The procedure shown in this instruction was performed without disassembling the engine completely.
Remove any components necessary to gain access to the area that is to be cleaned. Refer to the appropriate Service Manual for the proper procedures.
Illustration 5 g02820317
Pistons and cylinder bores to be cleaned.
Illustration 6 g02820616
Close-up of piston prior to cleaning.
Ensure that all openings are covered or plugged in, to prevent debris contamination.
Follow the directions supplied in the CO2 cleaning equipment owners manual for proper set-up and operation procedures.
Illustration 7 g02820657
Cleaning the piston and cylinder bores.
Illustration 8 g02820661
Cleaning the cylinder head assembly.
Carefully clean the component following all safety precautions outlined in this guideline and the CO2 cleaning equipment owners manual.
Illustration 9 g02821343
Pistons and cylinder bores after cleaning.
Illustration 10 g02821418
Close-up of piston after cleaning.
Inspect the area cleaned to determine if further cleaning