Rear Wheels - Allis-Chalmers WD Operating Instructions And Repair Parts Illustrations

TIRES - Size 11 x 28 - Air Pressure 12 pounds.
HYDROMATIC TRACTOR TIRES -As water
alone will freeze in cold weather, Allis-
Chalmers Tractor tires are filled with the
proper quantity of 15% calcium chloride
solution. Calcium chloride will in no way
harm the casing, tubes or valves. A mixture
of 15% calcium chloride and 85% water has
a specific gravity of 1.140 and may be tested
by the use of an ordinary battery hydrometer.
This mixture will form a slush
but will not freeze at -20 F. If tractor is
to be operated at temperatures below 20°F,
below zero additional calcium chloride should
be added.
The rear tires are filled about 3/4 full of
the solution and then inflated to the standard
recommended air pressure. To check level
turn valve about 45O from verticle as shown
in sketch. This amount of solution will give
the same weight as two cast iron wheel weights
on each wheel. If more weight is needed for
difficult traction conditions,wheel weights may
be added. Tire companies have instructed
their service stations concerning liquid
ballast for tractor tires and they have the
necessary facilities for mixing and injecting
this fluid into the tires.
If the valve core is to be removed for any
cause, it will be necessary to jack up tractor
and turn the wheel, until the valve stem is on
top, otherwise the solution will be lost.
Calcium chloride and water solution as
supplied in tractor tires is not dangerous,
but because it may attack clothing or cause
skin irritations on some persons, especially
if it comes in contact with open cuts or sores,
we urge every one to avoid coming in direct
contact with it.
A remedy after having contacted this solution,
is to simply wash the skin with plenty of clean
water.
When plowing, the furrow wheel has greater
traction than the land wheel; do not decrease
pressure to equalize, instead increase the
pressure in the furrow wheel to 16 lbs.
High pressure will cause no damage to tires
unless slippage is excessive. Watch the tread
wear and correct tire pressure if it is ex-
cessive or uneven.
When mounted implements are used, addition-
al pressure should be used. Use about 1 lb.

REAR WHEELS

at+10 F ,
additional air pressure for each 800 lbs. of
weight added.
Do not inflate tube when removed from tire
more than enough to make it fill out round.
Tubes inflated beyond their elastic limit may
not return to their original shape and size.
To repair tubes, bevel sides of cut and slight-
ly increase length and width. Buff tube length-
wise of grain or mold marks. Place patch
on inside of tube at least l/2" larger than
opening on each side. Knead or roll in place,
fill cut with pure gum rubber and place second
patch on outside, cutting it larger than patch
on inside. Vulcanize at least 10 minutes.
2 3
FLUID LEVEL
REAR WHEEL WEIGHT