Shift mechanism
52
Automated manual transmission
Introduction of the smart fortwo, Model Series 451
Shift positions
3rd gear (3) and 4th gear (4)
a Selector drum 1/3, 5
b Selector drum 2/4, R
c Selector drum adjustment (1 grid square =
40°)
d Sliding block deflection (1 grid square = 0.3 in
(7.5 mm))
3rd gear (3)
For the change from 2nd gear to 3rd gear, the two
selector drums rotate through 40° upwards. The
upper sliding block in the selector drum 1/3, 5 is
displaced by 0.3 in (7.5 mm) to the right. It presses
the shift collar 1/3 into the idler gear of the third
gear. The other sliding blocks are in the neutral
position.
4th gear (4)
For the change from 3rd gear to 4th gear, the two
selector drums rotate through 40° upwards. The
lower sliding block in the selector drum 2/4, R is
displaced by 0.3 in (7.5 mm) to the right. It presses
the shift collar 2/4 into the idler gear of the fourth
gear. The other sliding blocks are in the neutral
position.
P26.60-2358-00
SN_Typ 451_us.book Seite 52 Freitag, 30. November 2007 1:56 13
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