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SERVO VALVE AS 1C4040 - Caterpillar

1C4040 SERVO VALVE AS Caterpillar parts SERVO
Alternative (cross code) number:
Caterpillar 1C4040 SERVO VALVE AS
Weight: 6 pounds 2 kg.

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Portable filter carts offer a means of removing contamination from hydraulic system fluid. Removal of contamination can be accomplished without removing and replacing the fluid from the machine.Filter carts are an environmentally safe means of off-loading used fluid during changes, and also as a means of cleaning new fluid while replenishing the hydraulic system.Filter carts when used in conjunction with normal hydraulic system maintenance can help prolong seal life and the life of other wearing parts as well as aiding in smooth valve and control actuation.Most filter carts have a range of micron sizes available. Various micron size two stage filters are used for cleaning implement fluid. It is important to note that the use of filter carts does not inhibit metal producing wear on parts internal to the system nor will it remove any current mechanical problems associated with the machine hydraulics system. We recommend that filter carts be used at the appropriate filter change interval of the machine (typically 500 hours).Should an implement such as a pump, motor, or hydraulic cylinder fail, contamination from the failure may enter the system. The filter cart can be used and the system filters replaced to help clean the implement fluid. Extreme failures may require disassembly of implements and valves to insure proper system clean-up. Fluid that has been used for more than 2000 hours or fluid that has been very hot (burned) should be changed. Use the following recommended procedures for using filter carts as an exceptionally good method to clean hydraulic implement fluid.Reference: Operation and Maintenance Manual; Special Instruction, form SEHS9043.Procedure
Typical oil leaks.1. Inspect all implements for leaks and repair if necessary.Seal leakage on hydraulic cylinders not only allows fluid to escape, it may allow contamination to enter the system causing internal wear to cylinder, pump, and valve parts. Hoses, valves, drive motors, and system connections should be inspected closely for leaks.2. Start the machine and actuate the hydraulic implements to bring the hydraulic system to operating temperature. Take a sample of the implement fluid for analysis.It is important to determine the contamination level (base line) in a system prior to using the filter cart. Taking samples prior to and after filtering establishes the types and amount of contaminants present and also the effectiveness of the filter cart in removing the contaminants. Particle count is the recommended detection method for determining contamination levels and size.Always take samples before and after using the filter cart. Oil sample bottles are available through your Caterpillar dealer. Procedures used to extract the sample are available in publication PEHP6001. For hydraulic systems that do not have sampling ports for taking samples use Special Instruction SEHS9043 for the procedure to install sampling ports on the machine.3. Replace system implement fluid filters.Refer to the Operation and Maintenance Manual for your machine for the correct procedure to use.
Portable filter cart.4. Attach portable filter cart to machine.When possible, connect to the ecology drain valve. The ecology drain valve is located on the bottom of the hydraulic tank.

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