34 - 6
Spool Assemblies
Dismantling
1 Remove socket screws 1 from the valve body.
2 Remove cover 2.
3 Remove ‘O’-ring and discard.
4 Withdraw spool 3.
Note: Identify spools during removal to ensure correct
replacement.
5 Encase spool in holder blocks 4 and clamp into a vice.
Note: See page 34 - 4 for details of holder.
6 Remove locating screw 5 holding spring guides 6.
7 Remove spring guides 6 and spring 7.
Cleaning
1 Clean all parts with clean oil and dry with compressed
air. Inspect all parts.
2 Ensure spool 3 moves smoothly.
3 Check spring 6 has no defects, deformation or wear.
4 Remove slight defects by lapping.
5 Renew damaged or badly worn parts.
Assembly
Assembly is the reverse of the dismantling procedure.
Torque Settings
1 30 Nm (22 lbf ft)
5 60 Nm (44 lbf ft)
Section E Hydraulics
9803/6410
Section E
34 - 6
Issue 1
Control Valve
JS01000
JS01010
JS01020
JS01030
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