Gasoline System - Cadillac V-63 1923 Operator's Manual

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GENERAL CARE
tiamois for the chassis. Do not use on the body a chamois that has been
sed on the chassis or wheels.
Do not use soap, gasoline, kerosene or anything of this nature on the
nish. Such ingredients attack the varnish.
Do not clean the glass with preparations which may contain harmful
lgredients. Use only cleaning compounds which are known to have no
estructive effects on highly polished glass.
GASOLINE SYSTEM
leneral Description
The supply of gasoline is carried in a tank at the rear of the car and is
arced to the carburetor by air under a pressure of one to two pounds. A
ioat controlled needle valve in the carburetor maintains the gasoline at
he correct level in the carburetor bowl.
The gasoline pressure is indicated by a gauge on the instrument board
see Figure 1). A hand air compressor on the instrument board is provided,
»y which pressure for starting may be obtained when the car has been
tanding long enough to make this necessary. When the engine is running,
wressure is automatically maintained by an air compressor on the engine,
Iriven by an eccentric on the front end of the cam shaft. An air pressure
elief valve connected in the air line prevents the pressure rising above that
or which the valve is set.
The pipe extending almost to the bottom of the gasoline tank is a con-
inuation of the gasoline line. The air line simply enters the tank at the
op and does not extend into the gasoline.
7
illing the Gasoline Tank
The gasoline tank is at the rear of the car. (See Fig. 21.) The filler
:ap may be removed after loosening the thumb screw.
Gasoline should be strained through a wire cloth of very fine mesh before
t is poured into the tank. If dirt or water is allowed to enter the gasoline
system it may cause great annoyance by getting under the carburetor inlet
leedle and causing the carburetor to flood.
After filling the tank, screw on the filler cap and tighten the thumb
screw. This is necessary to prevent leakage of the air pressure by which
she gasoline is forced to the carburetor.
Settling Chambers and Strainers
There are two settling chambers in the gasoline system, one at the under
side of the gasoline tank and the other attached to the left hand side of the
frame of the car just under the front floor boards.
GENERAL CARE
51
There is a drain plug at the bottom of each of these settling chambers.
Every one thousand miles or oftener the plug in the settling chamber under
the floor boards and the plug in the settling chamber underneath the gaso-
line tank should be removed to drain the settling chambers of any dirt or
water which has accumulated. Before unscrewing either of the plugs, the
car should be driven out of the garage into the open and the gasoline system
relieved of all air pressure by removing the gasoline filler cap on the tank.
Be sure there is no fire near the car when these plugs are removed.
There are two strainers in the gasoline system which require cleaning
periodically—one at the point where the gasoline feed pipe is attached to
the carburetor, and the other attached to the drain plug in the settling
chamber under the front floor boards. (See Fig. 21.)
GASOLINE GAUGE
GASOLINE LINE
FILLER CAP
PRESSURE GAUGE
HAND AIR COMPRESSOR-
mi
CARBURETOR
STRAINER
GASOLINE TANK
-SETTLING CHAMBER
DRAIN PLUG
SETTLING CHAMBER
AND STRAINER
DRAIN PIPE I
POWER AIR COMPRESSOR
Fig. 31. Gasoline System.
The strainers should be removed and cleaned every one thousand miles
or oftener. Remove the filler cap to relieve the air pressure before removing
either strainer. In cold weather it may be found necessary to remove the
strainers more frequently, to prevent an accumulation of water at these
points which would freeze and prevent gasoline from flowing to the car-
buretor.
CARBURETOR
The carburetor is correctly adjusted when ;the car is assembled and unless
tampered with should not require readjustment. It is unnecessary to change
the adjustment for changes in season and weather.
Good carburetor action cannot be expected until the engine is thoroughly
warmed up. Imperfect carburetor action while the engine is cold does not
indicate that the carburetor requires adjustment.
If adjustment of the carburetor seems to be necessary have it made by
a Cadillac distributor or dealer. The adjustment should not be attempted
by one unfamiliar with it.