106 CHAPTER 3
Maintenance
9. Raise the crusher panel until it
reaches the end of its stroke.
Hold the lever in order to make
the pressure build up in the
system;
10. Check the pressure at the same
time on the pressure gauge;
11. Adjust the main relief as needed
(Figure 168. “Main valve”) by
loosening the lock nut and
turning the adjustment screw
clockwise to increase the
pressure or the other way to
reduce it;
Figure 168. Main valve
12. When finished, hold the
adjustment screw and tighten
the lock nut.
Crusher Panel
Control Lever
Lock Nut
Main Relief Valve
Adjustment
Pressure Adjustment Table
Pump Chassis
Cylinder
Bore
(Packer)
Main Relief
Pressure
(±50 PSI)
Dump Valve
Pressure
(±50 PSI)
VANE
PUMP
6X44”
3000 PSI@
1200 RPM
3300 PSI@
1200 RPM
2
X44”
3000 PSI@
1200 RPM
3300 PSI@
1200 RPM