The Brookings register. [volume] (Brookings, Brookings County, S.D.) 1903-1971, 1915-12-02

this prove satisfactory?
1t all depends on what the cost OF a
new spring would be. Ordinarily we
would advise a complete new spring.
Do oil boxes for springs save the life
of the spring, and do they make tho car
ride easier?
The main object of oil boxes is to
eliminate ~squeaking and rusting. The
life of the spring Is increased by their
use, inasmuch as rusting and excessive
wear are prevented by the presence
Of the lubricant, and riding may also
be improved, due to the fact that fric-
ton between the leaves is cut down.
is the air which is pumped through
a spark plug, which is supposed to
pump fresh air, more injurious to the
rubber Of the inner tubes than the air
which is pumped into them with a hand
pump?
If the motor driven pump is a good
one and no oil or mixture is forced
into the tire the results will not be
harmful, but if the pump does force
gas and oil into the tubes the tubes
will become injured. Practically all the
tire pumps now on the market are SO
designed that only pure air is pumped
into the tires and no gasoline vapor or
oil is allowed to work it's way in.
In my car more carbon forms around
the piston head and valves in running
il 200 or 300 miles than should form in
running $500 miles. The carbon has
to be removed every 300 miles. Can
you tell me what will prevent this?
There are only two sources from
which carbon may be deposited in an
engine. These are the gasoline and
oil. Both oil and gasoline may be Of
the best quality-i. e., with a low car
bon content-and still the motor may
carbonize rapidly. In the first place,
the feeding of too much oil will u
such a deposit. The excess oil burns
and leaves behind some carbon. The
same holds true if the mixture is too
rich. There will be an explosion, but
a portion Of the mixture will burn and
II " NC iCiL III liz CiSih u 10
suggested that you cut down the oil
level slightly and have the carburetor
adjustment checked up. 1t is possible
that the piston rings are worn consid-
erably, allowing the oil to get into the
combustion chamber, causing smoking
at the exhaust and carbon to be de-
posted in the cylinders.
How is the end play in a three-quar-
te~r-floating rear axle taken up?
End play in these axles usually Is
caused by worn ball thrust washers,
and the replacement of these, which
are on both ends of the differential
case, will remedy the trouble.
One Of the cylinders Of my car leaks
and carbons in a short time. Can you
suggest a remedy for this?
The carbon deposit is the result Of
burning oil, and the remedy lies in
preventing too much oil from getting
above the piston top. Poorly fitting
piston rings will cause this, and a loose
piston or a worn cylinder will give the
same result. The crank case level
should not be kept too high.
have had trouble with my starter.
II does not seem powerful enough to
turn the engine over. The batteries
have been tested and everything looked
over, but nothing can be found to cause
il. Can you suggest something?
TO Tho hottnrr ic In GOOD condition
the trouble is clearly between the bat
terry and starting motor or in the start.
ing motor itself. The battery gravity
should be tested, for q vOltmeter some
times is inaccurate. The gravity OF
the average make is IN and twenty
eight hundredths when fully charged,
Look over the switch and all wiring
between battery n motor and see
that there are no insulation breaks. II
the battery is in good condition and
the wiring found to be in fair shape
then blame the cranking motor. but
under no circumstances should you at
tempt to dismantle it to look for the
trouble. Let the maker do the work.
How can a cam shaft be timed with
the crank shaft when there are nc
marks on the timing gears?
The flywheel should be turned around
until the piston In No. l cylinder Is or
top dead center and the magnetic dis
tributer arm on No. l segment. This
is the condition of things when the cyl
inder is about to fire. The cam shaft
should then be slipped in position Sc
that both intake and exhaust valves Of
No. / cylinder are fully closed.
In ordinary practice at advance spark
how far from the top dead center
should the spark occur, in inches?
The advanced spark may occur any
where from one-half to one inch before
top dead center. In many racing cars
the magnetic is set so as to produce
spark more than n inch before cen
ter.
Will any kind Of tough wood answsl
for separators in storage batteriss? I,
this wood treated?
Poplar. Eastwood and cypress ar,
commonly used for this purpose. TIL,
-