FENDER AS 2425564 - Caterpillar

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Release the hydraulic system pressure. Refer to Disassembly and Assembly, "Hydraulic System Pressure - Release".
Keep all parts clean from contaminants.Contamination of the hydraulic system with foreign material will reduce the service life of the hydraulic system components.To prevent contaminants from entering the hydraulic system, always plug or cap the lines, fittings, or hoses as they are disconnected. Cover any disassembled components and clean them properly before assembly.Clean the hydraulic system properly after any major component exchange or especially after a component failure, to remove any contamination.
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, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
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Remove guard assembly (1) .
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Remove cover (2) .
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Remove cover (3) .
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Install Tooling (A) onto the hydraulic tank. Attach an air supply hose onto Tooling (A). Apply 276 to 414 kPa (40 to 60 psi) of air. This procedure will pull a vacuum on the hydraulic system.
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Remove access cover (4) that is under the main control valve.
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Open the drain valve (5) in order to drain the oil for the swing drive.
Drain the oil from the swing drive into a suitable container for storage or disposal. The capacity of the swing drive is approximately 8 L (2.1 US gal).
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Note: Not all machines will require the removal of hose assemblies. Remove the hose assemblies that will make the removal of the swing motor easier.
Disconnect hose assemblies (12) and hose assemblies (13) at the boom side of the hose assemblies. Move hose assemblies (12) and hose assemblies (13) out of the way. This will allow easier access to the swing motor.
Disconnect hose assembly (6) and hose assembly (7) .
Disconnect hose assembly (8) and hose assembly (9) .
Disconnect harness assembly (10) .
Disconnect clip (11) .
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Disconnect hose assembly (14) .
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Remove bolts (16) and the washers in order to remove anti-reaction valve (17) .
Remove bolts (15) and the washers.
Prior to the removal of the swing motor, clean the swing motor and the area around the swing motor. Remove any loose paint around the mating surface of the swing drive and the swing motor in order to prevent contamination from entering the swing drive.
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Attach Tooling (B) and a suitable lifting device to swing motor (18). The weight of swing motor (18) is approximately 55 kg (120 lb). Use Tooling (B) and the suitable lifting device in order to remove swing motor (18) from the machine.