1935 Cadillac - GM Heritage Center

When shifting into low or reverse, the lower end
of the control lever moves to the right and slides
the top plate toward the high- and second-speed
shifter shaft. This action holds the shaft stationary
and makes the shifter fork locking pin
act as a pivot for the bottom plate. Forward or
backward movement of the control lever then
moves the bottom plate and through it moves the
low and reverse shifter shaft into either gear.
When shifting into second-speed or high, the
lower end of the control lever moves to the left
and slides the top plate toward the low and reverse
shaft, holding this shaft stationary and making
the stud in this end of the bottom plate act as a
pivot. Forward or backward movement of the
control lever then moves the bottom plate and
TRANSMISSION
159
through it moves the high- and second-speed shaft
into either position.
The transmission breather on the Cadillac
models is located at the rear end of the transmission
on the rear bearing retainer housing. No
breather is provided on the LaSalle.
The rear end of the Cadillac transmission is used
as an additional point of support for the engine.
The LaSalle transmission is supported at the sides
instead of at the rear as in the Cadillac cars.
The service operations and adjustments of the
transmission are the same on all Cadillac cars.
Those on the LaSalle transmission necessarily
differ because of the different construction.
Short
Detent Spring.
Beveled face on slot of sliding gear coop/ing
Com on synchronizing drum Finger
Second-speed Constant Mesh Gear
Sliding Gear Coupling
Shoulder on detent spring
Synchronizing Drum
Plate 57. (Fig. 4) Transmission Second-speed Synchronizing Mechanism-
LaSalle
Operation of Synchronizing Mechanism in LaSalle Transmission
The operation of the synchronizing mechanism
(Fig. 4) in shifting from neutral to second speed is
briefly as follows:
When the gear shift lever leaves neutral, it
operates the shifter shaft and fork which in turn
move the sliding gear coupling back towards the
second-speed constant-mesh gear. As the sliding
coupling travels rearward on the main shaft, it
comes in contact with the shoulders on the secondspeed
detent springs and carries these springs
along with it. The detent springs in moving back
contact with the second-speed synchronizing
drum and force it in contact with the cone on the
second-speed gear. The gear is thereupon rapidly
brought to the same speed as the drum.
At this point, further movement of the gear
shift lever forces the sliding coupling over the
shoulders of the detent springs as the springs
have reached the limit of their travel. Continued
movement of the gear shift lever moves the
coupling further back forcing the beveled faces on
the coupling against the cam surfaces on the drum