994D Wheel Loader Machine System Caterpillar

Piston Pump (Implement) - Install

Usage:

994D 3TZ

Installation Procedure

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Table 1
Required Tools
Tool	Part Number	Part Description	Qty
A	138-7575	Link Bracket	2
B	1P-7407	Eyebolt	1

Note: Verify that all of the components of the piston pump are clean and free of foreign material prior to installation.

Note: Check all of the O-ring seals and the components for wear or damage. Replace the components, if necessary. Lubricate the O-ring seals lightly with the lubricant that is being sealed.

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Illustration 1	g00589106

Attach Tool (B) to piston pump (9), as shown. Attach a suitable lifting sling to Tool (B). Attach the other end of the suitable lifting sling to a hoist.

Install piston pump (9) and O-ring seal (16) (not shown). The weight of the piston pump is 73 kg (160 lb). Install four bolts (15) and the washers.

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Illustration 2	g00520691

Install two hose assemblies (12) and (14) on the manifold (13) .

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Illustration 3	g00589082

Connect two hose assemblies (10) and (11) on piston pump (9) .

If necessary, repeat the procedure for the remaining piston pumps.

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Illustration 4	g00519221

Install Tooling (A) on channel (7), as shown. Attach Tooling (A) to a suitable lifting device. Attach the other end of the suitable lifting device to a hoist. Install channel (7). The weight of the channel is 78 kg (175 lb).

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Illustration 5	g00520383

Install eight bolts (8), the nuts, and the washers to secure channel (7) to the platform.

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Illustration 6	g00518963

Install eight bolts (6) that hold the handhold assemblies to the channel.

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Illustration 7	g00518712

Attach a suitable lifting sling to handhold assembly (4). Attach the other end of the lifting sling to a suitable hoist.

Install eight bolts (5), the nuts, and the washers.

Connect two clips (3) and the plates. Install two bolts (2), the nuts, and the washers.

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Illustration 8	g00587678

Install drain plug (1) and fill the hydraulic tank. Refer to Operation and Maintenance Manual, "Hydraulic System Oil - Change" for the correct procedure to fill the hydraulic tank.

End By:

Remove the wheel chocks. Refer to Disassembly and Assembly, "Wheel Chock (Front and Rear) - Remove and Install".
Disconnect the frame lock link. Refer to Disassembly and Assembly, "Frame Lock Link - Separate and Connect".
Start the engine and check the level of the hydraulic tank. Refer to Disassembly and Assembly, "Hydraulic System - Pressure Release / Charge".