JLG 740A, Service And Maintenance Manual

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SECTION 3 - CHASSIS & TURNTABLE
3121160 – JLG Lift – 3-27
Testing and Setup
DR: When pressure line is closed adjust the pressure of
the controller (if it’s DFR design then open the adjustable
orifice and increase force of the spring - FR -).
FR: If swivel angle is in the mid position adjust differential
pressure 14 bar adjustable orifice is partly closed).
Mechanical flow limiter: While screwing in the threaded
pin you will be able to reduce the flow from Vg max to 50%
of Vg max.
3.9 DRIVE MOTOR ADJUSTMENT
PROCEDURE (PRIOR TO S/N 83332)
1. Remove the cap nut from adjustment screw.
2. Loosen jam nut on the adjustment screw and make
adjustment.
3. Measure from top of jam nut to the end of adjust-
ment screw. Refer to Figure 3-9., Drive Motor Adjust-
ment (Prior to S/N 83332).
4. Tighten jam nut, install cap nut.
NOTE: The “o” ring must be seated in groove in cap nut.
mm
4-WD 11 0.433 1.000
inches cu. in. /rev
Figure 3-9. Drive Motor Adjustment (Prior to S/N 83332)