Jacobsen HR3300T, Safety, Operation & Maintenance Manual

Page: 54 / 86

SAFETY, OPERATORS & MAINTENANCE MANUAL
en-54
9 ADJUSTMENTS
A
9.1 TRACTION CONTROL PEDAL
The LPV transmission pump has an internal
neutralising mechanism which cannot be adjusted. If
the machine does however creep carry out the
following.
1. Lift and support both front and rear wheels.
2. Remove ball joint from pump lever to allow
pump to neutralise.
3. Start engine, manually move the pump control
lever and release to ensure wheels stop
rotating.
4. Operate foot pedal to ensure cable is free.
5. Reattach ball joint to pump lever.
9.2 WEIGHT TRANSFER ADJUSTMENT
The weight transfer bias can be adjusted on the lift
valve. The valve is accessible from under the seat
plate.
To adjust:
1. Loosen the locknut A whilst holding the
threaded shaft still with the Allen Key B.
2. Using an Allen key B rotate the threaded shaft
clockwise in direction D to increase weight onto
the drive wheels when the traction control
switch is operated on the control panel. This
improves slope climbing performance. To
reduce weight on the drive wheels when the
traction control switch is operated on the
control panel, rotate the threaded shaft counter
clockwise in direction C. This increases the
ground weight of the cutting unit and will
reduce the possibility of cutting unit “bounce”
when working at high speed on undulating
ground. It is recommended that the Allen key
is turned a 1/4 turn at a time and the weight
transfer tested.
3. Tighten locknut A. whilst holding the threaded
shaft still with the Allen Key B.
6. Move the foot pedal in forward & reverse
directions to ensure there is no creep in neutral
position.
Properly support raised machinery with jack
stands
WARNING