Maintenance Instruction
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4.3 Brake Adjustment and Maintenance
4.3.1 When Any of the Following Occurs, the Brakes Should Be Adjusted:
The free play of the brake pedal is too large, which can cause a braking failure.
The free play of the brake pedal is too small, which can cause too little clearance between the brake shoe and the
brake drum and cause the brakes to drag.
The left and right brake forces are inconsistent, causing the tractor to pull to one side.
4.3.2
Brake Adjustment Methods:
Brake Pedal Free Play Adjustment:
Loosen the lock nut (3) on the short bar (4), rotate the brake bar control fork (2) and change the length of the brake
bar to make the free path (the displacement of the brake pedal from the highest position to the position where the
gap between the brake drum [8] and the brake shoe friction plate [7] disappears) of the brake pedal within
20–30 mm. Make the lengths of the left and right short bars (4) consistent, and then use the lock nut (3) to
lock tightly.
Adjustment to Equalize Left and Right Braking:
When the adjustments of the left and right brakes are inconsistent and the tractor brakes while running at
high-speed, the impression lengths of the left and right tires will become irregular. At this time, the brake bar of
the short-impression side should be shortened or the brake bar at the long-impression side can be lengthened until
the lengths of the left and right tire impressions in the soil are even and the tractor brakes properly. Once done,
the nut (3) should be locked tightly.
Figure 4-3 Brake System
1. Return Spring 2. Control Fork 3. Lock Nut 4. Short Bar 5. Joint Lever 6. Brake Rocker Arm
7. Brake Shoe Friction Plate 8. Brake Drum 9. Handbrake Handle 10. Brake Pedal
