Gravely 992055 25HP PM160Z - Manual (Page 20)

GB - 20
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 11)
1. Shut OFF engine. Engage parking brake. Remove the
ignition key.
2. Place seat in the service position (See SERVICE
POSITION on page 17).
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 11)
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 posi-
tion. See SERVICE POSITION on page 17.
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 28).
1. Damper Locknut
2. Damper
3. Tie-Rod Jam Nut
4. Tie-Rod 5. Steering Lever
6. Brake Interlock
7. Hydrostatic
Transmission
Figure 11
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.