1917 Cadillac - GM Heritage Center

8 ADJUSTMENTS
ADJUSTMENTS 9
Power Tire Pump
V 7^
The head on the rod by which the air pump gears are meshed is located in the
front floor boards to the right, and just ahead of the transmission control lever and hand
brake lever. This part is fitted with a screw driver slot in order that it may be turned
easily.
To bring the pump into operation, first either stop the engine or disengage the
clutch and hold it out until you are sure that the transmission gears have ceased
rotating. Then with the engine not running or with the clutch pedal still held out,
turn the slotted head in a clockwise direction as far as it will go. Then start the
engine, or, in case the engine is running, engage the main clutch, being sure that the
transmission control lever is in the neutral position.
The best speeds for the power tire pump are at between 600 and 800 revolutions
per minute of the engine.
DO NOT ATTEMPT TO MESH THE PUMP GEARS WITH THE ENGINE
RUNNING AND THE CLUTCH ENGAGED. IF THIS IS ATTEMPTED, IT
WILL PROBABLY RESULT IN STRIPPING THE PUMP GEARS.
To stop the pump, turn the slotted head in a counter clockwise direction as far
as it will go.
The connection for the air hose for inflating the tires is located inside the tool box.
FOREIGN CARS
On foreign cars with right hand drive, the slotted head on the rod by which the
air pump gears are meshed is located to the left of the control lever and hand brake
lever.
On these cars the slotted head must be turned in a counter clockwise direction
to bring the pump into operation and in a clockwise direction to stop it.