Controls System Maintenance; Adjusting The Traction Drive For Neutral; Adjusting The Maximum Ground Speed - Toro 31230 Operator's Manual

Controls System
Maintenance
Adjusting the Traction Drive
for Neutral
Note: If the machine has recently had the hydraulic fluid
changed or the traction motors or hoses replaced, you must
remove any air trapped in the system before performing
this procedure. You can accomplished this by operating the
machine in forward and reverse for a few minutes and then
replenishing the fluid as required.
When you move the machine to a level surface, it must not
creep when you release the traction pedal. If the machine
does creep, adjust the traction drive as follows:
1. Perform the pre-maintenance procedure; refer to
Preparing the Machine for Maintenance (page
2. Jack up the rear of the machine until the rear tires are
off the floor. Support the machine with jack stands to
prevent it from falling accidentally.
Note: On 4-wheel-drive models, the front tires must
also be off the floor and supported by jack stands.
3. Start the engine, set the throttle to the S
and observe the direction that the rear tires rotate.
•
If the left, rear tire is rotating, loosen the jam nuts
on the left transmission control rod
Note: The forward end of the control rod has a
left-hand thread. The rear end of the rod, which
is connected to the transmission, has a right-hand
thread.
Figure 38
1. Transmission-control rods
•
If the left, rear tire is rotating in reverse, lengthen
the rod by slowly turning the rod counterclockwise
(as viewed from the front) until the left, rear tire
4. Move the throttle to the F
wheel remains stopped or you detect a minimal creep
in reverse. Adjust the rod as required.
5. Tighten the jam nuts.
6. Repeat the procedure for the right, rear tire, if required,
by using the right transmission control rod.
7. Shut off the engine, remove the jack stands, and lower
the machine to the floor.
8. Test drive the machine to ensure that it does not creep.
Adjusting the Maximum
27).
Ground Speed
1. Disengage the PTO, release the traction pedal to the
N
2. Move the throttle lever to the S
engine, remove the key, and wait for all moving parts to
stop before leaving the operating position.
position,
LOW
3. Loosen the jam nut on the stop bolt for the traction
pedal
(Figure 38).
1. Traction pedal
2. Stop bolt with a jam nut
(forward)
4. Adjust the stop bolt all the way in (away from the
traction pedal).
5. Using your hand, push the traction pedal all the way
forward (with light pressure) until it stops and hold
it there. Maintain light pressure on the pedal when
pushing it to the fully forward position.
39
stops rotating or you detect minimal rotation in
reverse.
•
If the left, rear tire is rotating forward, shorten the
rod by slowly turning the rod clockwise (as viewed
from the front) until the left, rear tire stops rotating.
position, and set the parking brake.
EUTRAL
(Figure 39).
Figure 39
3. 0.060 inch (1.5 mm)
4. Stop bolt w/ jam nut
position. Ensure that the
AST
position, stop the
LOW
(reverse)