The gears on the primary and secondary shafts are located on needle bearings. Therefore, there is no rigid connection between the shafts and gears. The gears are always engaged. When shifting gears, a connection is formed not between the gears, but between the gear and the shaft. To synchronize the revolutions of the shaft and the gear, the following technique is used: one part of the shaft, with the help of friction elements, slides against a part of the other shaft. Due to friction, the faster shaft is decelerated until a torque-transmitting connection can be created in synchronous motion. Since fractions of a second are still needed for synchronization, the driver does not have to force «tear» shift knob, especially when starting a cold engine with still thick gear oil.
Gearshift problems
If it is difficult to shift into gears, or shifting becomes difficult after a long drive, then the cause of these problems is most likely the clutch, not the gearbox (see list of faults in chapter «Clutch»). The adjustment of the shift mechanism described below only serves to bring the shift lever into the correct position and thereby optimize the shifting stroke.
Shift Adjustment
Set the gear lever to neutral position.
Unscrew the ball head.
Remove the shift lever cover.
Under the vehicle, remove the cross member at the front and rear and unscrew the heat shield to expose the shift lever.
Under the vehicle, slightly loosen the hex bolt at the lower end of the shift lever so that the shift lever and shift shaft can be rotated in relation to each other.
Install the shift lever vertically and align it so that both lugs of the ball joint are at the same distance from the bearing housing.
Carefully tighten the screw under the vehicle so as not to change the adjusted position.
Shift Adjustment
Left: The distance between the stopper and the body must be the same on both the right and left sides.
Right: for adjustment, it is necessary to loosen the screw indicated by the arrow on the system of rods and levers for controlling the gear change mechanism under the car.
Finally, check the function:
The gear lever handle in the idle position should be at the level of the third or fourth gear.
Change all gears. At the same time, observe the reverse gear lock function.
If necessary, loosen the screws of the hinge housing and turn it slightly.
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