325C LCR Excavator Machine Systems Caterpillar

Main Hydraulic Pump - Remove

Usage:

325C BKW

Removal Procedure

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Table 1
Required Tools
Tool	Part Number	Part Description	Qty
A	138-7573	Link Bracket	4

Start By:

Release the hydraulic system pressure. Refer to Disassembly and Assembly, "Hydraulic System Pressure - Release".
Remove the muffler. Refer to Disassembly and Assembly, "Muffler - Remove".

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.

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NOTICE

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 Tools and Shop Products Guide" 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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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.

Note: The following procedure is performed with the counterweight on the machine. If suitable Tooling is available to handle the weight of the counterweight, the counterweight can be removed in order to facilitate this procedure. The weight of the counterweight is approximately 7666 kg (16900 lb).

Drain the oil from the hydraulic tank into a suitable container for storage or disposal.

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Illustration 1	g01167719

Disconnect hose assemblies (1), (2), (3), and (4) .

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Illustration 2	g01167720

Remove mirror mounting bracket (5), hand hold (6), supports (9) and (11), and covers (7) and (12) .

Disconnect hose assembly (8) .

Use two people to remove support assembly (10). The weight of support assembly (10) is approximately 27 kg (60 lb).

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Illustration 3	g01167727

Remove cover (13) .

Disconnect harness assemblies (15) and remove bracket assembly (16) from main hydraulic pump (14) .

Disconnect hose assemblies (17) .

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Illustration 4	g01167728

Remove bolts (18), and bracket assemblies (19) and (20) .

Disconnect hose assemblies (21) and (22) .

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Illustration 5	g01167729

Remove bolts (23) and filter assembly (24) .

Disconnect hose assemblies (25) and (26) and tube assembly (27) .

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Illustration 6	g01167730

Remove support assemblies (28) and (29) .

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Illustration 7	g01167747

Attach Tooling (A) and a suitable lifting device to main hydraulic pump (14). The weight of main hydraulic pump (14) is approximately 250 kg (550 lb).