Operation CHARM: Car repair manuals for everyone.

Manual Transmission/Transaxle

Powerflow in Neutral





^ The input gear drives the countershaft.
^ The countershaft gears drive the 1st, 2nd and 3rd gears on the output shaft.
^ All the synchronizers are disengaged (centered).
^ No gears are engaged to the output shaft.
^ The output shaft is not engaged to the input shaft.

Powerflow in 1st Gear





^ The input gear drives the countershaft.
^ The countershaft gears drive the 1st, 2nd, 3rd and 5th gears on the output shaft.
^ The 1-2 synchronizer hub is splined to the output shaft.
^ When the synchronizer sleeve is shifted rearward, 1st gear is locked to the output shaft.

Powerflow in 2nd Gear





^ The input gear drives the countershaft.
^ The countershaft gears drive the 1st, 2nd, 3rd and 5th gears on the output shaft.
^ The 1-2 synchronizer hub is splined to the output shaft.
^ When the synchronizer sleeve is shifted forward, 2nd gear is locked to the output shaft.


Powerflow in 3rd Gear





^ The input gear drives the countershaft.
^ The countershaft gears drive the 1st, 2nd, 3rd and 5th gears on the output shaft.
^ The 3-4 synchronizer hub is splined to the output shaft.
^ When the synchronizer sleeve is shifted rearward, 3rd gear is locked to the output shaft.

Powerflow in 4th Gear





^ The input gear drives the countershaft.
^ The countershaft gears drive the 1st, 2nd, 3rd and 5th gears on the output shaft.
^ The 3-4 synchronizer hub is splined to the output shaft, but no gears are engaged to the output shaft.
^ When the synchronizer sleeve is shifted forward, the input shaft is locked to the output shaft through the synchronizer hub.

Powerflow in 5th Gear





^ The input gear drives the countershaft.
^ The countershaft gears drive the 1st, 2nd and 3rd gears on the output shaft and the 5th gear synchronizer.
^ The 5th gear synchronizer hub is splined to the countershaft.
^ When the synchronizer sleeve is shifted forward, the 5th gear is locked to the countershaft.
^ The countershaft 5th gear drives the output shaft 5th gear.

Powerflow in Reverse Gear





^ The input gear drives the countershaft.
^ The 5th reverse synchronizer hub is splined to the countershaft.
^ The synchronizer hub engages the reverse gear to the countershaft.
^ The countershaft reverse gear drives the reverse idler gear.
^ The reverse idler gear drives the reverse gear on the countershaft, in a reverse direction.