Ford Manual
It is that part of the mechanism of an automobile which lies between the crank shaft and the drive shaft
and by which one is enabled to move at different speeds from the other. It is the speed gear of the car. It
permits driving the car forward at low and high speeds and by it the car is reversed.
What is meant by the term "Planetary Transmission?"
Answer No. 70
One in which the groups of gears always remain in mesh and revolve around a main axis. The different
sets of gears are brought into action by stopping the revolution of the parts which support the gears. By
means of bands (similar to brake bands) the rotation of the different parts is stopped. The planetary
transmission is the simplest and most direct means of speed control---and is a distinct advantage of the
Ford car.
What is the purpose of the Clutch?
Answer No. 71
If the crank shaft of the engine ran without break straight through to the differential---and through it
applied its power direct to the rear wheels---the car would start forward immediately upon the starting of
the engine (were it possible to get it started under such conditions). To overcome this difficulty the shaft
is divided and by means of the clutch the part of the shaft to which the running engine is delivering its
power is enabled to take hold of the unmoving part gradually and start the car without jolt or jar. The
forward part of the assembly is referred to as the crank shaft, the rear part as the drive shaft.
How is the Clutch controlled?
Answer No. 72
By the left pedal at the driver's feet (see Answer No. 10). if the clutch pedal, when pushed forward into
slow speed, has a tendency to stick and not come back readily into high, tighten up the slow speed band
as directed in Answer No. 74. Should the machine have an inclination to creep forward when cranking, it
indicates that the clutch lever screw which bears on the clutch lever cam has worn, and requires an extra
turn to hold the clutch in neutral position. When the clutch is released by pulling back the hand lever the
pedal should move forward a distance of 1-3/4" in passing from high speed to neutral. See that the hub
brake shoe and connections are in proper order so that the brake will prevent the car creeping ahead.
Also be sure the slow speed band does not bind on account of being adjusted too tight. Don't use a too
heavy grade of oil in cold weather as it will have a tendency to congeal between the clutch discs and
prevent proper action of the clutch when starting the engine.
How is the Clutch adjusted?
Answer No. 73
Remove the plate on the transmission cover under the floor boards at the driver's feet. Take out the cotter
key on the first clutch finger and give the set screw one half to one complete turn to the right with a
screw-driver. Do the same to the other finger set screws. But be sure to give each finger the same
number of turns and don't forget to replace the cotter keys after each finger has been adjusted.
