312B Excavator Machine Systems Caterpillar

Assembly Procedure

1. Thoroughly clean all of the parts of the travel brake valve prior to assembly.

   Note: Make sure that all parts are marked during the disassembly of the travel brake valve. Make sure that the marks are used during the assembly of the travel brake valve. Do not mix the parts.

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Illustration 1	g00532376
This is an exploded view of brake valve (7) .

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Illustration 2	g00532374

2. Install two relief valve (8) in travel brake valve (2). Tighten two relief valves (8) to a torque of 150 ± 12 N·m (110 ± 9 lb ft).

3. Install brake valve (7) in travel brake valve (2). Tighten brake valve (7) to a torque of 240 ± 20 N·m (175 ± 15 lb ft).

4. Install two check valves (6) in travel brake valves (2). Tighten two check valves (6) to a torque of 150 ± 12 N·m (110 ± 9 lb ft).

5. Install valve (5) in travel brake valve (2). Tighten valve (5) to a torque of 20 ± 2 N·m (15 ± 1 lb ft).

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Illustration 3	g00532372
This is an exploded view of brake valve (4) .

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Illustration 4	g00529096

6. Install brake valve (4) in travel brake valve (2). Tighten brake valve (2) to a torque of 20 ± 2 N·m (15 ± 1 lb ft). Install O-ring seal (3) on the travel brake valve.

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Illustration 5	g00529095

7. Install plate (1) on travel brake valve (2) .

End By: Install the travel brake valve. Refer to Disassembly and Assembly, "Travel Brake Valve - Remove and Install" in this manual.