, 1923-08-26
Watch Parts Used In Repairs.

~ Aaa
caused to automobile owners
through INSCRIPTIONS repairmen.
who. for the purpose of making a
few extra cents profit, use imitation.
instead of genuine parts when MAX
ing repairs or requirements, that
this week 1 am going to give you a
few tips that will guard you against
this kind OF graft.
Here is a case that came to my
notice a short time ago. An owner
had a knock in his engine and
drove into a service station where
II was diagnosed as a loose wrist
pin. This particular owner knew n
mechanic who worked at a certain
garage, SO he decided to have the
work done there. In making the re-
pair. the garageman did not use
genuine factory wrist pins, but Just
as good" pins put out by an imita-
ton or pirate parts manufacturer,
because they were a little cheaper,
Within a short time after the re-
pair was made. the engine COM
menced to knock, and was again
brought to the service station.
When the owner was told 1t was
wrist pins again, he insisted the
knock could not be caused by them,
because they had just been renewed.
An examination was made and
showed that not only vas one OF the
pins worn badly, but it had also
gouged the sylinder walls to such
an extent the cylinder could not
even be rebored and safely used
,rng. n.I ft 10 rar,gguE re- tn In
stall a new cylinder block. a repair
that cost sSh.
Another case occurred just last
week where a a had been over
hauled, valves ground in. new pis-
tons and rings fitted. and a set of
new contact points fitted. The a
ian all right for a few weeks, then
the engine began to get hard TO
start and to misfire now and again.
The climax came when the owner
was driving along a crowded city
street and suddenly the engine
stopped. There he was, right in the
center of the traffic. with a line of
cars banked up behind him. footing
their horns and making things e
orally unpleasant. The a was
LUIGI oNNl ~ NAS thAp ahN
from the service station called. He
qu ck.y found the trouble n the
Ignition, and traced 1t to the set of
imitation lust as good and a lot
cheaper contact points that had
been fitted when the engine was over
hauled. The thin veneer of tungsten
metal had quickly burned off, leav
ing the steel base underneath ex-
posed. The country is flooded with
inferior Ignition parts turned out
by the pirate" parts manufacturer.
Always use genuine parts, then you
are assured of something that will
stand up and give no trouble.
Suppose you hear a grind or hum
, in the rear axle, and simply say to
the repair mar that you want 1t
fixed. He goes to work and tears
down the axle, then tells you that
a new ring gear and pinion is
needed. You say all right. go
ahead. He uses an imitation part
In a few weeks or months, you AVE
the old trouble back again. Why?
These gears must be very carefully
hardened and heat treated. An
alloy steel must be used to stand
up under the extremely high pres
!. sures exerted on the teeth. Per
haps the initiation part Is made
from common carbon steel which
wal not hardened sufficiently to
make 1t hard enough to resist wear
or was hardened too much and made
brittle. What is the result. The
gear'that was not hardened enough
soon wears and becomes noisy. and
the gear that was hardened too
much. breaks a tooth or perhaps the
whole gear strips when a sudden
strain is applied.
The genuine gear is made from
ar alloy steel which Is tough to
stand the strain, and is carefully
hardened to take the wear on the
face of the teeth. All of these things
cannot be detected by simply glanc'
ing at the part. The real difference
lies where you cannot see 1t. For
the small difference in cost, It does
not a to allow imitation parts TO
be used in any repairs.
Another reason why you should
buy only genuine parts. Is the iact
that manufacturers from time TO
time find 1t necessary to make
changes in dimensions on certain
parts which cannot be followed by
the Imitation parts manufacturer
and il these pirate parts are used
trouble is sure to result.
The manufacturer knows what
kind of parts suit his a better
man anyone else. Every time you
nave a repair made. convince your
self that a genuine part is being
used. Pirate parts generally cost a
few cents less to buy than u
parts, but in the finish. II you use
the pirate part. you will more h
nav for the difference in h
- a-nonan unn will have Inter on