Adjust Unit To Drive Straight; Adjust Parking Brake - Gravely Pro-Turn 400 Series Operator's Manual

ADJUST UNIT TO DRIVE
STRAIGHT
Adjust Tire Pressure
1. Place unit in service position. See
Service Position on page 23.
2. Check tire pressures. If needed, adjust to
recommended pressures. See
Specifications on page 45.
IMPORTANT: DO NOT inflate tires outside
recommended range.
3. Check tracking. If unit does not drive in
straight line, adjust limiter bolts. See
Adjust Limiter Bolts on page 33.
Adjust Limiter Bolts
See Figure 42.
Limiter bolts can be adjusted to increase or
decrease drive wheel speeds. To adjust:
1. Loosen jam nut.
• Turn limiter bolt counterclockwise to
increase maximum drive wheel speed
on that side.
• Turn limiter bolt clockwise to reduce
maximum drive wheel speed on that
side.
2. Tighten jam nut.
1. Lower Control Arm
2. Limiter Bolt
Figure 42
3. Adjust steering lever position. See Adjust
Forward Position on page 32.
1
2

ADJUST PARKING BRAKE

See Figure 43.
IMPORTANT: Adjust both sides of parking
brake equally.
1. Check parking brake. See Check Parking
Brake on page 27.
2. Engage parking brake.
3. Loosen nuts behind compression spring
until tension is removed from spring.
Then tighten stop nut against washer until
spring measures 3.8 cm (1 1/2") long.
4. Tighten jam nut against stop nut.
5. Loosen nuts ahead of trunnion until there
is a 3.2 mm – 6.4 mm (1/8" – 1/4") gap
between the stop nut and trunnion.
6. Tighten jam nut against the stop nut.
1. Jam Nut
2. Stop Nut
3. Trunnion
4. Compression Spring
5. Flat Steel Washer
7. Check brake function.
EN - 33
4
1
3
2
Figure 43