SEAL 2518488 - Caterpillar

Start By:
Release the hydraulic system pressure. Refer to Disassembly and Assembly, "Machine Preparation for Disassembly and Assembly".
Remove the guards. Refer to Disassembly and Assembly, "Guards - Remove and Install". 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.Note: SERVICE DATA: TOOLING (ZZ) WILL NOT BE IDENTIFIED IN PHOTOGRAPHS IN THE REMOVAL OR THE INSTALLATION. THIS TOOLING IS SHOWN IN ORDER TO ASSIST THE EXPERIENCED SERVICEMAN.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat® products.Dispose of all fluids according to local regulations and mandates.
Personal injury can result from hydraulic oil pressure and hot oil.Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system.Make sure all of the work tools have been lowered to the ground, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.
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.
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Attack Tooling (A) to the hydraulic tank.
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Remove screws (1) and slide cover (2) upward.
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Remove bolts (3).
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Move floormat (4) in order to access cover (5).
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Disconnect linkages (6).
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Remove cover (5).
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Disconnect hose assemblies (7).
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Remove bolts (8).
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Disconnect hose assembly (9).
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Remove bolt (10). Remove bank valve (11). Use two people to remove bank valve (11). The weight of bank valve (11) is approximately 37 kg (82 lb).
Repeat this procedure for the other bank valve .