Gravely Promaster 260Z Owner's/Operator's Manual page 24

ADJUSTING UNIT TO TRACK STRAIGHT
WARNING: Prior to adjusting unit tracking, shut off
engine, engage parking brake, and remove ignition
key.
Check and adjust tire pressure. Increase pressure on side
unit tracks to. DO NOT exceed maximum recommended tire
pressure. See Specifications on page 30 for correct tire
pressure.
If tire pressure adjustment does not solve tracking problem,
adjust limiter bolts on stop bracket (figure 20). Front bolts
adjust forward tracking and rear bolts adjust reverse
tracking. Lengthen limiter bolt (move closer to lever) on side
which is too fast.
2
1
2
1. Limiter Bolt
2. Jam Nut
STEERING LEVER HANDLE HEIGHT
ADJUSTMENT
The handles have three height positions (figure 21).
1
Position A
Position B
Position C
2
1. Spacer
2. Steering Lever
3
1
4
3. Steering Lever
4. Stop Bracket
Figure 20
4
3
3. Eccentric Spacer
4. Handle
Figure 21
1. Remove spacer, handle, and eccentric spacer from
steering lever.
NOTE: Position the right and left handles at the same
height.
2. Install spacer, handle, and eccentric spacer in the
appropriate height position. Do not tighten nut holding
eccentric spacer.
3. Turn eccentric spacer until the right and left handles are
the same height. Tighten nut.
PARKING BRAKE ADJUSTMENT
1-1/2 in.
(3.81 cm)
2
6
5
4
3
1. Parking Brake Lever
2. Brake Rod
3. Return Nuts
4. Trunnion
The parking brake might need adjustment over time and
after new brake pads have been installed.
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NOTE: After installing new brake pads in calipers, they must
be burnished by driving for a short distance (about 100 feet)
with the brake on. To do this, bring parking brake lever
part-way up while driving normally (in a straight line).
Check Adjustment
NOTE: Be sure to check parking brake on both sides of unit
(figure 22).
With parking brake engaged, spring length should measure
1-1/2 in. (3.81 cm) between jam nuts and trunnion and the
clearance between return nuts and trunnion should be
1/16 to 1/8 in. (1.59 to 3.18 cm). If the measurements are
not within specifications, adjust the parking brake.
Adjusting the parking brake
1. Engage parking brake.
2. Turn jam nuts clockwise to compress spring or
counterclockwise to extend spring until there is 1-1/2 in.
(3.81 cm) clearance between jam nuts and trunnion.
3. Tighten jam nuts together.
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GB - 24
1/16 to 1/8 in.
(1.59 to 3.18 cm)
1
2
5. Spring
6. Jam Nuts
Figure 22
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