One of the common faults is the breakdown of farm tractors in the process of traveling. Now, the reasons and exclusion methods are described as follows:
The reason is as follows: The bearing in the gearbox is turbulent, damaged, or the loose nut at the shaft end is loosened, which causes the spline shaft to generate axial turbulence during operation, resulting in a disengagement. Remedy: Replace the bearing and related parts, and tighten the transmission shaft fastening nut.
The second reason is that the deformation of the ball fork at the lower part of the shift lever or the improper adjustment of the operating mechanism causes the stroke of the fork shaft to be reduced during shifting, and the transmission gear is in a half-engaged state, thereby causing a disengagement. Remedy: Adjust the shift lever and its pull rod and other operating mechanisms to make the stroke of the shift fork meet the requirements. If the gear head or fork is seriously worn, it should be replaced with a new one.
The reason is as follows: the locking spring is reduced in elasticity or broken, and the fork shaft, positioning groove or steel ball is worn out, resulting in failure of the locking mechanism, resulting in a disengagement. Remedy: Check locking springs, fork shafts, positioning balls and other accessories and replace them if necessary.
Cause four: The gear face wears heavily into a wedge shape, and generates axial thrust during operation, as well as automatic decoupling. This situation should be replaced with new gears.
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