How manual transmission synchronizer works

Manual Transmission Synchronizers. Many of today's cars and light trucks use synchromesh synchronized manual transmissions. They contain an input shaft, an output shaft, and a countershaft. The output shaft fits and spins in a bore located in the center of the input shaft. The input shaft contains a pinion gear that is in constant mesh with the countershaft.  · While rebuilding this AX15 transmission I figured it would be a good time to go over the input/output shafts and synchronizers to give you a basic understand. Synchromesh transmissions are a further refined version of the constant mesh system, although less common. How it improves the system is by adding another stage to the process of connecting the gears to the drive shaft through the dog clutch. It splits the dog clutch in two – a gear fixed to the drive shaft called the synchronizer hub, and a collar around the outside of it that could slide .

We look at how transmission works, why gears are needed, What is a manual transmission, gear train, compound gears, main parts, shaft, clutch, helical cut, Synchronizer sleeve, Synchronizer blocker ring, splines, Synchronizer hub, stick shift, gear stick, reverse gear and much more. Synchronizers. Manual transmissions in modern passenger cars use synchronizers, or synchros, to eliminate the need for double-clutching. A synchro's purpose is to allow the collar and the gear to make frictional contact before the dog teeth make contact. Signs of Problems with Manual Transmission Synchros. Finally, the synchronizers, or synchros, on manual transmissions can cause issues for drivers. Synchros help the transmission smoothly shift from one gear to the next. It adjusts the speed of the shaft so the gears can fall into alignment quickly while you shift.

The core element of a manual transmission is the meshed gear assembly. It consists of two toothed wheels (gears) meshed together. The gear that is connected to the input/counter shaft is the input gear, the gear connected to the synchronizer is the output gear. Every gear has a fixed gear ratio. While rebuilding this AX15 transmission I figured it would be a good time to go over the input/output shafts and synchronizers to give you a basic understand. First, the main shaft gears have a synchronizer cone-teeth arrangement. A hub is fixed to the shaft. A sleeve that is free to slide over the hub is also used in this system. It is clear that if the sleeve gets connected with the teeth of the synchronizer cone, the gear and shaft will turn together. Or, the desired locking action will be achieved.