Bush Hog 2165 manual Valve Repair, Replace Center Section Assemblies, Replacing Spool Seals

Figure 11 VALVE REPAIR Position Pin

Bushing

FLOAT ASSEMBLY

Spring

Bushing

SPOOL CONTROL KIT

Replace Center Section Assemblies:

Note: For the purpose of these instructions we will consider the section containing the MAIN RELIEF VALVE as the left side of the valve.

1.Remove control valve from the backhoe.

2.Thoroughly clean the exterior of the valve before beginning disassembly procedures.

3.Since the valve will be assembled in the same order, each section should be marked numerically so that they can be reassembled in the same sequence.

4.Mount the valve vertically in a vise to facilitate dis- assembly and assembly.

5.Remove the 3 tie rod nuts from the right end sec- tion, using a thin-wall socket.

6.Valve sections can now be removed by sliding the sections along the tie rods.

7.Thoroughly clean the O-ring counterbores and the ground surfaces of each section. Place O-ring seals, ordered as a kit, in proper counterbores. For better sealing, it is recommended that all O-rings used in the counterbores be replaced with new parts.

8.Replace the sections on tie rods with the O-ring counterbores facing the right end of the valve. Be careful replacing the sections so that the section O- rings are not moved from the counterbores.

9.When all sections are assembled on the tie rods, tighten the tie rod nuts equally to 30 ft. lbs. torque, NO MORE - NO LESS, or spools may bind and stick.

Replacing Spool Seals:

Note: For the purpose of these instructions we will consid- er the control handle side of the valve as the TOP, and the opposite side as the BOTTOM.

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