1919 Cadillac - GM Heritage Center

56 GENERAL CARE
General
TRANSMISSION AND CLUTCH
Description
TRANSMISSION
The transmission is in unit with the engine, and is of the selective type of
sliding gear. The gear changes are accomplished by the movement of a hand lever
at the driver's right (sec Figure 1, also under "Gear Shifting,"' page 10.)
When traveling in high gear, power from the engine is transmitted through
the transmission without passing through any of the transmission gears. Power is
transmitted through transmission gears when the car is operated in intermediate,
low, or reverse gear.
Lubrication
General
Changes of gear must never he attempted without first disengaging the clutch
by holding down on the clutch pedal.
The transmission case should always contain lubricant enough to bring the level
up to the filler plug in the right-hand side of the case. The level should be
inspected at least every 2,500 miles, and lubricant added if necessary.
At the end of every 5.000 miles the transmission case should be thoroughly
drained and refilled with fresh lubricant.
Cadillac Rear Axle and Transmission Lubricant is recommended for the transmission.
In its absence steam cylinder oil mixed with cup grease may be used.
The consistency of the mixture should be such that the mixture will flow easily at
temperatures of from G0° to 70° Fahrenheit.
Description
CLUTCH
The main clutch is of the multiple disc dry plate type. The driving discs are
covered on both sides with a friction material composed largely of asbestos, and are
driven by gear teeth in a clutch ring bolted to the fly wheel of the engine.
1'i'l- SO. Clutch
Central.
The driven discs are not covered. These
discs are carried on a clutch hub and drive
the clutch hub through keys. The clutch hub
in turn drives the transmission shaft.
When the clutch is engaged by allowing
the clutch pedal to come toward you, the
clutch spring forces all of the discs together.
The resulting friction between the driving and
driven discs drives the transmission shaft and
the car when the transmission control lever
is in other than neutral' position.
The clutch pedal should be adjusted occasionally
to compensate for wear on the facings
of the clutch discs. This adjustment is explained
below under "Adjustment of Clutch
Pedal Clearance."
GENERAL CARE
Adjustment of Clutch Pedal Clearance
After the car has been run for some time it may be found that the facings on
the clutch discs have become compressed or worn to some extent and that consequently
the clutch pedal strikes the stop screw before the clutch is fully engaged.
When this condition exists a readjustment may be made as follows:
Remove the pin "N." Fig. :wi. and unscrew the yoke "IV which is threaded cm
the rod "O," so that when the pin "N" is replaced the clutch pedal has a movement
back and forth of one and one-quarter inches without starting to release the clutch.
Secure the pin "N" with a cotter pin and tighten the lock nut "V."
Adjustment of Length of Clutch and Brake Pedals
General
Lubrication
The clutch and brake pedals are each made in two parts slidingly adjustable to
accommodate different drivers.
Description
STEERING GEAR
The steering gear is of the worm and
sector type. Adjustments are provided in
the steering gear for taking up play,
which may result after long use.
The mechanism of the steering gear
is lubricated through fillers "A" and "B,"
Figure W. The filler at "A" is thre.vled
to fit a connection furnished with the oil
gun.
Cadillac Steering Gear Lubricant should
he used for this part. In its absence.
Cadillac Rear Axle and Transmission Lubricant
mixed with two to three per cent
of flake graphite can be used.
Filling at "B" is facilitated by first
turning the steering wheel so that the
front wheels face to the right a» far as
they go. The car should be in motion
when the steering wheel is turned.
WHEELS
Fi