Service Manual

Groundsmaster 4500−D/4700−DPage 5 − 24Electrical System
Adjustments
Traction Pedal Adjustment
The traction pedal includes a neutral assembly that is
used to adjust the traction neutral position (Fig. 19).
Traction pedal adjustment may be necessary to make
sure that traction pedal movement provides the correct
full reverse and full forward positions for the traction
pedal position sensor. The InfoCenter display can be
used to check traction pedal adjustment using the fol-
lowing procedure.
1. Park machine on a level surface, lower cutting
decks, engage parking brake and stop engine.
2. Turn ignition switch to RUN but do not start engine.
3. Use the InfoCenter Display Diagnostics menu (see
InfoCenter Display in this chapter) to obtain and select
the Traction Pedal menu item. Choose Inputs and the In-
foCenter display should identify sensor voltage (Fig.
20).
4. Move traction pedal from full reverse to full forward
positions while noting the range of voltage displayed on
the InfoCenter.
A. Voltage in full reverse should be from 0.5 to 1.75V
(approximate).
B. Voltage in full forward should be from 3.5 to 4.5V
(approximate).
5. If voltage range from full reverse to full forward is in-
correct, adjustment of the spring shaft and rod end bear-
ing is necessary (Fig. 19).
A. Loosen hex nut that secures rod end bearing in
spring shaft. Hex nut can be accessed through slot in
frame bracket next to traction pedal.
B. Use hex on front end of spring shaft to rotate
spring shaft which changes traction pedal position in
relation to traction pedal position sensor. The spring
shaft hex nut can be accessed from below the ma-
chine.
C. Check range of voltage as described in step 4
above and make additional adjustments to the spring
shaft until range of voltage is within specifications.
D. Tighten hex nut to secure rod end bearing in
spring shaft. Check that traction pedal range of
voltage is still correct after hex nut is tightened.
1. Traction pedal
2. Pedal position sensor
3. Hex nut
4. Rod end bearing
5. Spring shaft
6. Spring shaft hex
Figure 19
1
2
3
5
4
6
Figure 20
Traction Pedal
Sensor:
2.407V