SLEEVE 2255966 - Caterpillar

Engine:
G3512E (S/N: SSR1-UP; GHD1-UP)
G3516C (S/N: GSB1-UP)
G3516C (S/N: TJB1-UP)
G3516C (S/N: GZC1-UP)
G3516C (S/N: TJC1-UP; GZZ1-UP)
G3516E (S/N: GAS1-UP; SLY1-UP)
G3520C (S/N: GZA1-UP; GZB1-UP; MAD1-UP; GZJ1-UP; GZK1-UP; GZL1-UP; GZM1-UP; GZN1-UP; B9P1-UP; RLP1-UP; LGS1-UP; HAT1-UP; CWW1-UP; CWY1-UP)
G3520E (S/N: GZG1-UP; GZH1-UP; HAL1-UP; SXY1-UP)
Buildup of deposits near the metering area of the fuel valve can develop depending on the quality of the gas that is being metered. This buildup can affect the performance of the fuel valve. The buildup may cause actual flow to differ from the command for the flow or the buildup can cause instability in the flow control. Seizure of the mechanism for the internal positioning is possible if the deposits are severe enough.Periodic cleaning may be performed and needed in order to ensure proper operation of the fuel valve. The customer must monitor the need for valid scheduled maintenance, buildups will vary depending on the quality of the gas in the particular application. An initial inspection at the 1000 hours or 3 months is recommended. This check will determine the nature and the rate of any buildup of deposits. A second inspection at 2000 hours or 6 months may be necessary.Refer to the procedure below in order to clean the fuel valve.Cleaning Procedure
Note: Do not use sharp objects that may scrape or dent the instruments for fuel metering or the inside of the valve body. Any scrapes or dents can degrade the accuracy of the valve. Damage to the internal geometry of the fuel valve plate or the bore around the valve plate will change the calibration of the valve.Note: Do not use high-pressure washing. There are no components in the fuel valve that are replaceable or serviceable.Note: Make sure that the power is disconnected before removing the main connector on the fuel valve.Procedure to Remove Light Buildup
Remove the fuel valve from the engine.
Use a 20 to 1 mixture of hot water and 4C-8648 Cleaner to clean the valve.
Spray the solvent into the bore and on the all the internal components.
Use a plastic brush or brass brush to remove any contamination.
Repeat Step 3 and Step 4 or proceed to "Procedure for Heavy Buildup" if the contamination remains or if the motion of the valve does not improve.
Rinse the bore and all the internal components thoroughly with water.
Inspect the valve plate and the bore around the valve plate for any remaining contamination.
Allow the unit to dry completely before returning to service.Procedure for Heavy Buildup
Remove the fuel valve from the engine.
Position the fuel valve in the fully open position.
Cap the inlet flange of the fuel valve.
Fill the fuel valve with a solution of 60° C (140° F) water and 30 mL (1 oz) of liquid soap.
Leave the solution in the fuel valve for one to two hours.
Remove most of the soap solution from the fuel valve and place the solution into a container in case further cleaning is needed.
Use a plastic brush or a brass brush to remove any contamination.
Repeat Step 4 through Step 7 until the contamination is removed and the valve