34 - 21
Load Check Valve (Dipper, Bucket,
Auxiliary, Left and Right Tracks)
Dismantling
1 Remove housing 1.
2 Remove ‘O’-ring 2 and back-up ring 3 and discard.
3 Remove check valve 4.
4 Remove spring 5 and check valve 6.
5 Remove nylon plug 7.
Cleaning, Inspection
1 Clean all parts in clean oil and dry with compressed air.
Inspect all parts.
2 Ensure check valves 4 and 6 move smoothly.
3 Check that spring 5 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.
Note: Renew nylon plug 7.
Torque Settings
1 97.63 Nm (72 lbf ft)
Section E Hydraulics
9803/6410
Section E
34 - 21
Issue 1
Control Valve
JS01390
JS01400
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