The Beaver herald. [volume] (Beaver, O.T. [Okla.]) 1895-1923, 1922-04-06
Average Owner Prone to Seek
Other Sources OF Evils Due
to fabrication.
PUMPING" AND ITS EFFECTS
Kind, Quantity and Rins-Fittlng Are
Sensitive Points That Must Be
Given the Utmost Considera-
tion by Owner.


needs to be told how Important lubri-
cation in all its many aspects Is In
contributing to the life and efficiency
OF the motor car. However there are
certain forms of fabrication failure
that the owner often does not realize
as existing. lie does not attribute to
them the troubles which they have
really caused.
For Instance, It Is very common
characteristic Of automobile engines
to develop a tendency to allow the
fabrication oil to leak past the piston
rings into the combustion chamber,
where 1t scots the plugs, induces the
smoking Of an aggravated character
and forms extremely heavy carbon
deposits. Frequently car owners COM
plain of the carbonizing tendency OF
their engines without realizing APP
parently that the trouble is due to
improper fabrication or to minor
trouble In the engine.
"ol Pumping" Evil.
The common name for this leakage
Of Oil is coil pumping" and Its fruits
are a carbonized motor, or sooty, oily
plugs. which induce ignition trouble
in more or less aggravated form.
Large sums were spent In changing
spark plugs. putting In new piston
rings and even replacing the pistons.
to cure chronic case OF oil pumping,
and all to no use, for the simple rea-
son that one had neglected some lit
tie seemingly minor detail that was
the key to the whole situation.
The fabrication of the engine cylin-
der involves good many problems
and some cooperation on the part
Of the user II they are to be satis-
factorily solved. The ideal condition,
of course, is to have just enough oil
supplied to keep the cylinders prop
erly fabricated, but not so much that
II will work past the rings into the
combustion chamber. In practice this
Ideal Is difficult to achieve and In
practically every engine there Is a
certain amount OF leakage. In most
cases this is kept low enough to keep
carbon and other troubles from the
acute stage.
Every car manufacturer recon-
mends certain grade of oil to be
used In his engine and his advice
should be rigidly adhered to by the
car owner In case there Is any ques'
tion in the matter the advice of the
service station should be asked The
commonly recommended lubricant Is
medium body oil, but this Is not
universal, so the car owner should
make absolutely sure of his ground
In this vitally important matter.
Ring Fitting Exacting Matter.
Fitting piston rings means more
than merely placing the rings In theii
grooves. The rings must fit the
grooves so that there is perhaps 0Ol
of an inch up and down clearance, oi
Just enough to prevent leakage, anC
still not cause the ring to stick. The
rings should be Tapped In size ant
ring fittings should be done by ex
perienced hands.
There has been q tendency In re
cent yenrs when engine lubricatinl
troubles occur 70 fit some special type
OF piston ring and believe that set
ties the matter. Many Of the specia
rings have real value, but they mus
be accurately fitted, just the same a
an ordinary diagonally ring.
In some cases 1t is possible to CURE
a chronic case Of oil pumping by drill
Ing the skirt Of the piston Will
1.10-inch holes, spaced at equal dis
tances under the lowest groove. This
with perhaps the addition Of scrape
ring In the skirt, will often work
wonders.
Finally, scored cylinder will in
duce oil pumping, since the trenches
In the cylinder wall allow the oil t
escape past the rings In this cast
the cylinder will have to be operated