The phenomenon of disorderly gear is the most common failure phenomenon of manual transmission. The phenomenon of disorderly gear of low-plate manual transmission refers to the situation when the technical condition of the clutch is normal.

The phenomenon of disorderly gear is the most common failure phenomenon of manual transmission. The phenomenon of disorderly gear of low-flat manual transmission refers to that when the technical condition of the clutch is normal, the transmission is engaged in two gears at the same time, or when the required gear is engaged, the result is engaged in another Gear.

Common Faults
The phenomenon of disorderly gear is the most common failure phenomenon of manual transmission. The phenomenon of disorderly gear of low-flat manual transmission refers to that when the technical condition of the clutch is normal, the transmission is engaged in two gears at the same time, or when the required gear is engaged, the result is engaged in another Gear. There are few reasons for this kind of failure, so correspondingly, its elimination methods and solutions are much less. First, the interlocking device failure: such as fork shaft, interlocking pin or interlocking steel ball wear too much. Second, the arc working surface at the lower end of the shift lever is worn too much or the groove of the shift block on the shift fork shaft is worn too much.
The third point is that the gear lever ball head positioning pin is broken or the ball hole or the ball head is worn too loose, which will also cause the low-flat manual transmission to jump. In short, the main reason for the disorderly gear is the failure of the transmission control mechanism. With the above three points of analysis, we will come to a one-to-one corresponding diagnosis and exclusion.
(1) When the required gear is engaged, another gear is engaged: shake the gear lever and check its swing angle. If it exceeds the normal range, the fault is caused by the loose fit of the ball head positioning pin at the lower end of the gear lever and the positioning groove or The ball head and ball hole are worn too much.
If the shift lever of the manual transmission of the flatbed rotates 360 degrees, the positioning pin is broken.
(2) If the swing angle is normal and the gear cannot be engaged or removed, the fault is caused by the lower end of the shift lever coming out of the groove (the reason for the escape is the wear of the lower arc working surface or the wear of the guide groove).
(3) Engage two files at the same time: the fault is caused by the failure of the interlocking device. Difficulty in gear shifting means that the clutch is in good technical condition, but the gear cannot be smoothly engaged when shifting, and gear clashing often occurs. Synchronizer failure is one of the causes of his.