Engine Lubrication - Cadillac V-63 1923 Operator's Manual

32
LUBRICATION
ENGINE LUBRICATION
Lubricating System
The lubrication of the engine is by oil under pressure. A supply of oil
is carried in the oil pan. Oil is drawn from the oil pan by an oil pump and
forced to the main engine bearings.
The connecting rod bearings on the crank shaft are lubricated by oil
from the main bearings forced through holes drilled in the crank shaft. A
hole drilled in the forward end of the crankshaft communicates with a hole
drilled in the crankshaft sprocket through which oil is supplied to the cam-
shaft driving chain. The cylinders are lubricated by oil thrown from the
lower ends of the connecting rods.
The pressure of the oil is regulated by pressure regulator (Figure 17),
containing a valve under spring tension. When the pressure is reached
for which the valve is set, the valve is forced open and the oil overflows
past the valve. A small hole drilled in the regulator housing allows oil to
by-pass the valve when the valve is seated. Oil flowing through the by-
pass and oil forced past the valve is carried to the camshaft bearings, power
pressure pump in the gasoline system and the camshaft sprockets and
chains through a hole drilled in the camshaft.
There is one gauge and one indicator in the lubricating system. The
pressure gauge is located on the instrument board and indicates the pres-
sure of the oil. The indicator is attached to the upper cover of the crank
case near the carburetor and indicates the level of the oil in the engine.
Filling Lubricating System
An oil level indicator on the engine is for the purpose of indicating when
the supply of engine oil is low and when a sufficient amount has been added.
The indicator is between the cylinder blocks and is under the intake mani-
fold, on the right hand side.
Oil should be added whenever the red ball of the indicator is down to
the line marked "Fill." Do not risk running the engine after the red ball
has reached the line marked "Fill." If, through oversight, the red ball
should reach the line marked "Empty" the engine should be stopped imme-
diately ,and supplied with oil. The oil filler is just back of the radiator on
the right side. (See Figure 17.)
Use only oil which is suitable (see under "Lubricants," page 31), and
be certain that the oil is free from dirt or lint before pouring it into the
engine.
LUBRICATION
33
When the red ball of the indicator is at "Full" the engine should con-
tain seven quarts of oil.
Fig. 17.
Oil Filler, Pressure Regulator, Level Indicator and Drain Plug.
Replace Engine Oil
At the end of each 500 miles of travel remove the drain plug from the
engine oil pan (see Figure 17). After the oil has drained out replace the plug
and through the oil filler on the housing just back of the fan, add seven
quarts of fresh engine oil (see under "Replace Engine Oil Frequently During
Cold Weather," page 34). A socket wrench with a long handle is supplied
with the tool equipment to facilitate the removal and replacement of the
drain plug.
At the end of the first 1,000 miles of travel, at the end of the next 3,000
miles of travel and at the end of every 4,000 miles of travel thereafter, drain
the oil pan as directed in the preceding paragraph, replace the plug and
through the filler add a mixture consisting of three quarts of kerosene oil
and one quart of engine oil. The mixture must be free from dirt and lint.
Run the engine at a speed of between 600 and 1,000 revolutions per minute
for the period of one minute. Then drain the oil pan, remove it and the
screen from the engine and thoroughly clean the oil pan and screen. Do
not fail to add seven quarts of fresh engine oil after replacing the oil pan.