561M Pipelayer Caterpillar

Assembly Procedure

Note: O-rings, gaskets, and seals should always be replaced. A used O-ring may not have the same sealing properties as a new O-ring. A reconditioning procedure should not be degraded because of a low cost component such as an O-ring or a gasket. Use 1U-6396 O-Ring Assembly Compound during the assembly procedure.

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Illustration 1	g00798471

1. Install ring (26), washer (22), spring (27), guide (23), rings (28) and (24), and washers (29) and (25) on rod (21) .

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Illustration 2	g00799090

2. Install spring (19) on the lower portion of pilot valve assembly (20). Install the lower portion of pilot valve assembly (20) into the valve body. Install plugs (18) .

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Illustration 3	g00798780

3. Install seal (13) and O-ring seal (15) on guide (14). Install pin (17) into pin (16). Install pin (16) into guide (14) .

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Illustration 4	g00799055

4. Install the top portion of pilot valve assembly (11) into valve body (12) .

5. Repeat steps 1 through 4 for the remaining pilot valve assembly.

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Illustration 5	g00798409

6. Install support (10) and bolts (9) .

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Illustration 6	g00798401

7. Install nut (7) on bolt (8). Install bolt (8) into lever (6). Tighten nut (7) .

   Note: Some adjustment may be required upon installation of lever (6). Bolts (8) should not contact the top of both valve assemblies when lever (6) is in a neutral position.

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Illustration 7	g00798394

8. Place lever (6) in the correct position. Install pin (5) and socket setscrew (4) .

   Note: Orient pin (5) so that the point of socket setscrew (4) seats in the dimple in pin (5) upon installation.

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Illustration 8	g00798392

9. Install nut (2) and rod (3). Tighten nut (2) .

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Illustration 9	g00798380

10. Install boot (1) .

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Illustration 10	g00798379

11. Place the pilot control valve in a vise. Install the hydraulic fittings.

End By: Install the pilot control valve for the boom. Refer to Disassembly and Assembly, "Pilot Control Valve (Boom) - Install" for the correct procedure.