Operation - Hudson Terraplane 1950 Owner's Manual

HUDSON OWNER MANUAL
S.A.E. 80 E.P. grade. If the unit is flushed out, it should be refilled with 2-1/4 pounds of
the proper lubricant.
Should hard shifting be encountered in extremely cold weather, drain out 2 ounces of
transmission oil, add 2 ounces of kerosene and refill to proper level with oil.
LUBRICATION—TRANSMISSION WITH OVERDRIVE
As the same grades of gear oil recommended for the transmission are used in the Overdrive,
communicating passages are provided between the two units. Separate drain and filler plugs
are also provided in the Overdrive housing. The drain plug is located on the bottom and the
filler plug is on the right side of the housing.
To check fluid level, first remove Overdrive filler plug and determine level, which should be
even with lower edge of hole. If level is low, refill to correct level. Then check oil level in
transmission and refill as required.
To drain and refill, first be sure lubricant is warm as it will flow more freely. Remove both
drain plugs and drain all old lubricant. Replace plugs. Refill Overdrive first, permitting level to
come up to bottom of filler plug hole. Next refill transmission to bottom of level of the filler
plug hole. Replace both plugs.
Should it be necessary to thin the lubricant to facilitate shifting in extremely cold weather,
drain out 2-1/2 ounces of lubricant, add 2-1/2 ounces of kerosene and then refill to proper level
with oi
l.
HUDSON SUPER-MATIC DRIVE
Hudson Super-Matic Drive provides automatic shifting through three forward
speeds yet gives the driver complete control of shifting at every speed.
An ultra low gear is also provided for adverse conditions while the automatic fourth
speed is higher than direct drive giving reduced engine speed for smooth, economical

operation.

With the Super-Matic "On" button (36—Fig. 5) pushed in, the automatic fourth
speed knob (26—Fig. 5) pushed in and shift lever (10— Fig. 5) in driving position,
the driving of the car is controlled entirely by the accelerator pedal (35—Fig. 5).
To start the car forward, start the engine (see "Starting the Engine," Page 21), place
the gear shift lever (10—Fig. 5) in the third gear position. Depress the accelerator
pedal and the car will move forward in accelerating gear.
When the car has been accelerated to the desired speed (above 14 miles per hour)
momentary release of the accelerator pedal will permit the shift into the third gear and
at speeds above 20 miles per hour again releasing the accelerator pedal permits the
shift into fourth gear.
When slowing down, the transmission will automatically shift down to third gear
when the car speed drops to 18 miles per hour and to accelerating gear when the
speed reaches 10 miles per hour so that the proper ratio for easy maneuverability and
fast acceleration is always available.
OPERATION
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