McCormick-Deering Farmall Tractors and ... - Antique Farming

Ball Thrust
Bearing
Elitist. 15. The front wheels of the
Farmall 20 with one wheel and the
bolster section cu t away to silow the
high-grade construction of these
parts. The construction in the F-30
is the same in principle.
Illust. 16. The Farmall 20 oil pump.
It extends down into the oil comp
and pumps oil through the oil filter
directly to connecting-rod dips and
to the governor and cam shaft
bearings.
Many Good Farmall Features
you can't see ... they Show up
in added Years of tractor life
THE nearest Farmall owner can tell you what the Farmall will do in
the field, how many acres he can cultivate in a day, how easy the
Farmall is to handle, how steady it is on the belt, and how little it
costs to keep the Farmall going. But not all Farmall owners can tell you
all that is back of the perfection of Farmall performance, or what it is
that makes Farmalls last so long.
Yet the features back of the Farmall record are not secret. It's just
that there are so many of them that are hidden inside the tractor. It's what
these features add up to that makes a Farmall what it is.
For instance, you can't see the thirty-three ball and roller bearings in
a Farmall 20—that is, not without tearing the tractor down. If you could
see them you still could not see the fine quality of steel and the precision of
workmanship that went into those bearings, much less the rigid inspections
they have to pass before they can get into a Farmall tractor.
You can't tell that the Farmall has a ball-bearing crankshaft just by
looking at the outside, but you know it's got something from the way the
engine operates and the ease with which it can be started.
You can't see the removable cylinder sleeves nor the quality of the
gears in the transmission and final drive.
The high quality steels used in the manufacture of the Farmall are
made in the Harvester Company's own factories, where uniformity of
product is under Harvester control. All working parts are turned, ground,
or otherwise worked to such exact dimensions that it is necessary to have
special equipment for measurement. The ideal balance of weight and power
in the Farmall is something you cannot see, although you soon discover it
in the field. You can't see the dust seals which keep oil in and dirt out, thus
protecting the tractor against wear by dirt or grit.
There are many other features of Farmall construction, especially with
reference to quality of materials, that you cannot see. You only know
they are there because Farmall performance
and Farmall stamina prove it. These features
not only make for length of life but
assure economical operation through elimination
of friction, proper protection of
working parts, and scientific utilization of
the different grades of fuel. To be sure of
quality in the tractor you buy, be sure that
there is a record for quality back of it.
Illust. 17. The steering worm and worm
wheel. A shows the splined end of the
bolster shaft. When the teeth engaging
the worm become worn the worm wheel can
be turned on the shaft to engage unworn
teeth, thus multiplying the life of the worm
wheel. B is the irreversible steering worm
which makes the Farmall steering wheel so
easy on the operator's arms. C is a rawhide
spring-loaded oil seal, the best device ever
made for keeping oil in and dirt out. D is
the ball bearings at the end of the steering
shaft and which is one of the reasons for the
quick response of the steering wheel.
Illust. 18. There are three bearing
cages in the Farmall transmission. Here
we see the countershaft with bearing
cage removed, allowing the shaft and
its gears to be raised out of the transmission
case.
ge 8
Illust. 19. The power take-off which is a regular
feature on all Farman tractors. Note that it is located
most convenient ly with relation to the various
machines the mechanisms of which are driven by
the power take-off.