El Paso herald. (El Paso, Tex.) 1901-1931, 1913-07-26
Copyright. 1918, by ". H. Stewart, j.

tor thoroughly with kerosene, IemoE-
ing all the old oil from the crank case
and working parts. If the valve guides
and the other parts are gummed, the
valves viii not seat properly or act
as they should. Reseating of the
valves at frequent intervals is also ad-
visable.
Motoring Department, The Herald
(a) Can you tell me what is the
proper plural of the word chassis"
OBJ I have a four-cylinder touring car
which works good when the motor Is
running free or if the car Is running ing
at good speed, but going up grade the
car begins to slow down on account
of the grade and will back fire, which
checks the speed on the car, and 1 soon
must change gear. What causes
(a) Chassis" is singular, "chasses"
is plural OBJ 1t is evident that the
gasoline supply is not sufficient when
going up hill. If you have gravity
feed from the tank to the carburetor,
tarded. This may be due to several
causes: % The difference in level be-
tween carburetor and tank may not
be enough; % there may be obstruc-
tions in the pipe line which partially
obstruct the flow; 90 there is usually
a dirt trap or screen somewhere in the
line between carburetor and tank; TINS
may need cleaning ca the level OF
&aSQll0E
Der may be too low; 90 would also
suggest that you note the condition OF
the float and also whether same works
freely; 90 the auxiliary air valve
should be inspected and you may find
it necessary to change the, spring.
Motoring Department, The Herald
How do you advise cleaning spark
Most people believe they have
cleaned a spark plug properly when
they have cleaned the spark gap points
The proper way IS Is TO remove Ine
porcelain or insulator and clean 1t
thoroughly The carbon deposit on
the porcelain permits a short-circuit
between the center rod and the base,
II the insulatOr is not cleaned, the re-
suits will not be satisfactory.
X
Motoring Department, The Herald
Ny car is equipped with one of the
latest type full floating aXles, but II
seems impossible to eliminate the noise
in the two large bevel gears We nave
tried several adjustments Of the gears;
that is in adjusting the smaller pinion
gear. thinking that possibly the small
gear may be meshed too tightly with
the large gear. The noise is not
steady noise, but irregular, and no
matter what adjustment we tried we
cannot seem to eliminate the disagree
able hum. We have even tried DIFF
ferent grades Of lubricant, thinking
that possibly heavy grade would heiP
kill the noise. The axle and gears are
not worn badly and we do not under
stand why this trouble should result.
Can you offer any suggestions as TO
the cause and how TO fix same?-L J.
Meegan.
It is evident that the large bevel
gear is not running true. The differ
entail unit itself may be suspended
properly and in proper alignment, but
1t occasionally happens that the large
bevel gear warps. This gear is usually
bolted or riveted to the differential
casting, and if the bevel gear was
originally slightly warped it would be
impossible to have it run true If this
large gear does not run absolutely true
it will cause the trouble you have
outlined. 1t is not a difficult matter
to remove the rear cap of the axle
housing, and with the bevel gear turn
ing determine whether same is running
true or not. The fact that the hum
ming noise is irregular would in itself
indicate that either the large bevel
gear is not running true or the pinion
gear and shaft are not running true.