34 - 16
Main Relief Valve (cont’d)
Assembly
Assembly is the reverse of the dismantling procedure.
High Pressure Setting
1 Insert relief valve assembly into control valve housing
and tighten relief valve body 4.
2 Tighten down adjusting screw 1 until piston 12 seats
onto internal surface Z.
3 Adjust housing 10 until high pressure setting is correct
(see Pressure Testing).
4 Tighten locknut 3.
Low Pressure Setting
1 Slacken adjusting screw 1 and adjust until low pressure
setting is correct (see Pressure Testing).
2 Tighten locknut 2.
Torque Settings
2 58 Nm (43 lbf ft)
3 58 Nm (43 lbf ft)
4 58 Nm (43 lbf ft)
Section E Hydraulics
9803/6410
Section E
34 - 16
Issue 1
Control Valve
JS01290
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