Gravely 992042 19HP-144Z - Manual (Page 19)

GB - 19
STEERING CONTROL NEUTRAL
ADJUSTMENT
If the steering levers do not line up (match) or the unit has
excessive creeping when the steering levers are in
neutral, adjust as follows.
Adjusting the Steering Levers to Line Up
(Match) (Figure 10)
1. Shut OFF engine. Engage parking brake. Remove
the ignition key.
2. Place seat in the service position (See Service
Position on page 16).
3. Loosen damper locknut on the same side as the
steering lever to be adjusted.
4. Loosen brake interlock on the same side as
steering lever to be adjusted.
5. Loosen tie rod jam nut and turn tie rod until steering
levers are aligned.
6. Tighten jam nut on tie rod, tighten brake interlock
and tighten damper locknut.
Eliminating Excessive Creeping of the Unit
(Figure 10)
1. If hydraulic system is cold, run unit for a minimum of
five minutes, then shut OFF engine.
2. With the unit up to and facing a wall, jack the unit up
so that both drive wheels are off the ground.
3. Start the engine and release the parking brake.
4. Move the steering levers from Forward to Reverse
several times to make sure controls are free. Then
return steering levers to neutral position.
5. Check wheel(s) for movement.
6. Shut OFF engine.
NOTE: The right and left steering levers are adjusted the
same way. To access the tie-rod, place seat in service
position. See Service Position on page 16
7. Adjust tie-rod(s):
If the wheel is moving in a forward direction:
a. Loosen the jam nut on each end of the tie-rod.
b. Turn tie-rod counterclockwise (lengthening the
distance between the steering lever and
hydrostatic transmission) several times.
If the wheel is moving in a reverse direction:
a. Loosen the jam nut on each end of the tie-rod.
b. Turn tie-rod clockwise (decreasing the distance
between the steering lever and hydrostatic
transmission) several times.
8. Return seat to operating position.
9. Start engine.
10. Move steering levers from Forward to Reverse
several times. Then return steering levers to neutral
position.
11. Shut OFF engine.
12. If wheel is not moving, tighten jam nuts on tie-rod.
The adjustment is complete.
13. If wheel is still moving, repeat steps 7 through 12.
ADJUSTING THE UNIT TO TRACK
STRAIGHT
Check and adjust tire pressure. Increase pressure on
side unit tracks to. DO NOT exceed maximum
recommended tire pressure (See Specifications on
page 25).
1. Damper Locknut
2. Damper
3. Tie-Rod Jam Nut
4. Tie-Rod 5. Steering Lever
6. Brake Interlock
7. Hydrostatic
Transmission
Figure 10
OF3381
1
2 3
4
5
6
7
3
WARNING: This adjustment requires operating
the engine. Use extreme care to avoid contact
with moving parts and hot surfaces. Be sure
rear of unit is well supported and secure before
starting engine.
WARNING: Prior to adjusting the tracking of
the unit, shut OFF engine, engage parking
brake, and remove the ignition key.