Great Falls tribune. [volume] (Great Falls, Mont.) 1921-current, 1922-03-19
ASK ME''61
Qe'nne Azap'aedM/
A@~.y66J2H :

Dear Barney Oldfield: / had a knock
in my car, so have adjusted my main
bearings and put in new oversize pis-
tons, new rings and new wristpins, but
now the knock is more pronounced than
before. / took off the crankcase again
because l thought something might not
be frightened properly, but found every
thing there all right. I did not change
the spark plugs as they are all right.
The car has good power. What do
you think is my trouble "A. E. n.
There is nothing else likely to cause
the knock except badly worn timing
gears. l assume the knock always is
heard. 1t should be more pronounced
on accelerating and should be heard
the least when pulling under heavy
load.
Dear Barney Oldfield: Ny car is
equipped with 33x4 cord tires. but /
fail to get the proper mileage Do
you think it would be best to use over
size tires-34x41a? Would it be a
better investment financially? Would
it decrease the power Of the carr
L. II. II.
1t always is more economical TO use
the oversize. 1t would not interfere
seriously with performance. Be sure
you use correct presSures. and also be
sure that the wheels are running in
alignment
Dear Barney Oldfield:. Will three
aluminium pstons and one iron one
make any difference in a cylinder
automobile engine: If SO. what Fl.
w. II.
| should say So All pistons not only
must be of the same material, but
they must weigh within half an ounce
of each other. Either all iron or all
aluminium should be used
Dear Barney Oldfield: VIII you
please advise me as to the cause Of a
continuous, loud, annoying grind in the
at any speed with chains on a level,
smooth road. When the car is pulling
on a hill the grind ceases but reap
pears again when returning 10 level
road. | was advised that this grinding
is due to the action Of the chains on
the gears in the transmission and that
the effect is not harmful to the mech
anism.
What is the cause Of the clutch slip
ping out from second speed when driv-
ing down hills. Before slipping OUT
there is sharp, piercing grind. not
unlike the regular second speed noise.
The transmission is of the selective
sliding gear type, with transmission Of
power through two universal joints to
full floating upper axle fastened with
torque arm. Ny car is practically
new and has been driven carefully for
5000 miles,. A. B.
The use Of chains should have abso-
iutely no effect whatever on tho gears
that is, the gears should not grind
just because the chains are used. Are
you sure the grinding comes from the
transmission? Usually rear axle gears
are the ones to produce grinding and
then It is caused by worn differential
bearings. worn pinion bearing, worn
gears. Clipped gears or gears badly
adjusted. If the noise actually comes
from the transmission it is due to
worn shaft bearings, worn gears. chip
ped gears or gears badly adjusted. If
the noise actually comes from the
transmission it is due to worn shaft.
bearings, worn gears, Clipped gear
teeth. shafts out Of alignment or hous-
ing out Of alignment (sprung).
The clutch doesn't slip. 1t is the
gears that slip out Of mesh. Mis-
aligned shafts, worn bearings, gears
that do not run true are some causes
OF this. Also if the shifter shaft
pfunger is worn or the plunger spring
too weak the gears are likely to be
forced out of mesh.