SERVICE
Parking Brake Inspection and Adjustment The parking brake tension must be set to require a mini- mum of 7 kg (15 pounds) of force to engage the brake lever seven clicks or less from the off position. If less than 7 kg (15 pounds) is required to engage the brake lever seven clicks from the off position, or if engaging the parking brake will not prevent the power unit from moving, the brake linkage rod will need to be adjusted. 1. Park the power unit on a level surface. WARNING The parking brake must be disengaged as part or the adjustment procedure. Park the power unit on a level surface and place wheel chocks in front and back of the wheels to prevent the power unit from rolling forward or backward. 2. Place wheel chocks in front and back of the wheels to prevent accidental movement. 3. Disengage the parking brake to remove tension from the brake linkage. 4. Tighten the lock nut (A) on the brake linkage rod several turns and recheck the amount of force re- quired to engage the brake lever. Continue to ad- just the lock nut until there is a minimum of 7 kg (15 pounds) of force required to engage the brake lever seven clicks or less from the off position.
ing brake engagement force without causing the brake engagement tab to exceed its movement specification, the parking brake band may require further service. Contact an authorized Ventrac dealer for assistance. Neutral Adjustment The power unit should come to a complete stop with the neutral assist lever in the On position and the parking brake disengaged. The power unit should not attempt to move with the parking brake engaged. If the power unit is attempting to move, there will be an excessive amount of pump hydraulic noise, which indi- cates the pump is not in the neutral position. If the power unit moves or attempts to move in either condition, the neutral position must be adjusted. 1. Remove any attachment from the power unit. 2. Park the power unit on a level surface. 3. Remove the pump cover from the power unit. WARNING Do not attempt to adjust the neutral position with the power unit wheels on the ground. The power unit could move forward or backward unexpectedly, causing severe injury or death. If the power unit is not adequately supported, the unit could fall and trap or crush a person or append- age, causing severe injury or death. 4. Lift the power unit so that all four wheels are a minimum of 5 cm (2 inches) off the ground and secure the power unit with jack stands or support- ing blocks. Ensure the jack stands or supporting blocks will not make contact with the wheels when they rotate. 5. Place a weight of 22.5 kg (50 pounds) on the seat so the operator presence switch is activated. 6. Place the neutral assist lever in the On position to engage the neutral assist spring. 7. Start the power unit and adjust the engine speed to approximately 2,000 RPM. 8. Locate the
C
A
B
5.
After the required amount of force to engage the parking brake is achieved, disengage the parking brake and move the SDLA lever forward to the end of its stroke. While moving the SDLA lever forward, observe the compression spring (B) and the brake engagement tab (C) on the brake linkage. The
neutral adjust- ment bolt (A) on the lower right side of the front frame (right column panel), directly below
compression spring should not cause the brake en- gagement tab to be lifted up more than .8 mm (.03 inches). If the brake engagement tab movement exceeds the specified measurement, it is possible for the brake to drag when travelling at full forward speed, causing premature wear of the brake. 6. If it is not possible to achieve the required park-
A
the neutral assist lever.
Service - 64
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