SECTION 4 - BOOM & PLATFORM
3121623
– JLG Lift –
4-19
Installing Counterbalance Valve
Refer to Figure 4-25., Rotator Counterbalance Valve.
1.
Make sure the surface of the actuator is clean,
free of any contamination and foreign debris
including old Loctite.
2.
Make sure the new valve has the O-rings in the
counter bores of the valve to seal it to the actua-
tor housing.
3.
The bolts that come with the valve are grade 8
bolts. New bolts should be installed with a new
valve. Loctite #242 should be applied to the
shank of the three bolts at the time of installa-
tion.
4.
Torque the 1/4-inch bolts 110 to 120 inch
pounds (12.4 to 13.5 Nm). Do not torque over
125 inch pounds (14.1 Nm). Torque the 5/16-inch
bolts 140 inch pounds (15.8 Nm). Do not torque
over 145 inch pounds (16.3 Nm).
Figure 4-25. Rotator Counterbalance Valve
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