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What causes the transmission to shift? It's shifted by shifter forks,
also known as sliding yokes. These resemble the oarlocks you find in
a row boat. and they ride in a groove in the clutch sleeve and
sliding gear. Shifter forks are connected to a cam and shaft
assembly. The cam assembly is kept in the selected gear by spring
loaded steel balls that jump through notches (in the cam assembly)
and hold the shifter forks in that gear. The shafts (of the cam and
shaft assembly) go through the housing and are fastened to shift
levers.
The shifter forks move the synchronizers which engage the gears to
the shafts they ride on.
The shift levers are connected to a control on the steering column or
a shift stick located on the floor. Both of these are powered by --
you!
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