Testing And Setup; Drive Motor Adjustment Procedure (Prior To Sn 0300138447); Drive Motor Adjustment (Prior To Sn 0300138447) - JLG 740AJ Service And Maintenance Manual

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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 pres-
sure 14 bar adjustable orifice is partly closed.
3121160
MODEL
"X" MEASUREMENT
mm
2-WD
8
4-WD
11
Figure 3-13. Drive Motor Adjustment (Prior to SN 0300138447)
SECTION 3 - CHASSIS & TURNTABLE
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.
Drive Motor Adjustment Procedure (Prior to SN
0300138447)
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 adjustment
screw. Refer to Figure 3-13., Drive Motor Adjustment
(Prior to SN 0300138447).
4. Tighten jam nut, install cap nut.
NOTE: The o-ring must be seated in groove in cap nut.
DISPLACEMENT
inches
cu.in./rev
0.319
1.425
0.433
1.000
3-31

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