JLG M450 ANSI Service Manual - Manual (Page 57)

SECTION 3 - CHASSIS & TURNTABLE
3121127 – JLG Lift – 3-17
18. while watching the analyzer display, select drive for-
ward. Be ready to remove your foot from the foot-
switch if the machine lunges forward.
19. The analyzer display should read the following if the
left speed sensor is adjusted properly: "SPEED 20%
FWD".
20. If the left speed sensor is adjusted improperly, the
analyzer will display "SPEED 20% REV", and the
machine will lunge forward.
21. Adjust the left speed sensor using the preceding
Adjustment Procedure until the analyzer displays
"SPEED 20% FWD" when forward is selected in the
platform. The percentage displayed is not critical,
just the direction.
22. After obtaining the display in step 10, operate the
machine in both the forward and reverse directions.
The machine should be controllable in both direc-
tions and will only drive at a maximum of creep
speed. The display on the analyzer should match
the direction selected.
23. Plug in the right sensor to the power module.
24. Test the machine. The machine should now have
maximum drive speed available in both directions
and should be controllable in both directions. The
analyzer display should match the direction
selected.