SUPPORT AS 2420778 - Caterpillar

Removal Procedure
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 hoses, on all hose assemblies, on all wires, and on all tube assemblies for installation purposes. Plug all hose assemblies and all tube assemblies. This helps to prevent fluid loss, and this helps to keep contaminants from entering the system.
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Open door (1).
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Remove plate (2).
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Disconnect all harness assemblies (3) and (4).
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Disconnect hose assemblies (5).
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Remove mounting bolts (7) and remove pump and motor assembly (6).Installation Procedure
Install pump and motor assembly (6) in the reverse order of removal.
Check the hydraulic oil level while the cab is in the normal operating position. Refer to Operation and Maintenance Manual, "Hydraulic System Oil Level - Check".