PNE
U M
ATIC
TIRES
MOU
NTI
NG OF
TIRES
ON RIMS -
After
rea
r
tires
are mounted on the
rims
th
ey
should be inflated to 30 pounds press
ure
in
order
to force the t
ir
e beads firmly into
the rims. The
rim
and
tire
are
ta
pe
red
, so this
pr
es
sur
e is neces
sary
in order to
force
the
beads firmly into place.
ilIIII
;
~
The
tire
should be inflated to 30 pounds pressure every time the tire bead is pushed
away
for
or
from the
rim
s
eat
at
any point. Then the
pr
es
sur
e should be dropped
to
the
recommended pressure as given in t h e following
paragraph
, "INFLA-
TION."
This
pr
actice should be followed, as
oth
erwise the ti re will slip on
the
rim and
shear
off
the
valve stem.
INFLATION - Inflation to
the
proper air pressure is
the
mo
st
imp
ortant
factor in
th
e
satisfactory performance and maintenance of tractor tires. For
th
e fr
ont
t
ir
es,
5.50 x 16, the prop
er
air
pr
essure is 28 pounds, and for the rear
tir
es, 10.00 x 38,
it
is 12 pounds, exc
ept
when plowing, when the pressure in
th
e r
ear
furrow
tir
e
sliould be increased by 4 pounds,
giving
16 pounds
pr
es
sur
e.
Both under inflation and over
inf
lation
are
h
arm
ful. Under inflation will damage
the cord body of the tire.
It
will cause a series of diagonal breaks in
the
cord
fabr
ic
in
the
sidewall area.
This
usually occ
urs
on
the
inner side wall of
th
e
furrow
wheel tire. Under inflation will result in
rep
eated buckling of the sidewall and con-
stant
buckling will break
th
e cord
fa
bric.
Inflation should always be high enough, especially in the fu
rrow
wheel, so
that
th
e
tire will not buckle. The buckling can be seen, especially on hard pulls, by
th
e
driver
or
someone walking along the side of
the
tracto
r. If the
tire
buckles or
wrinkles
th
e
air
pr
es
sure
should be increased to
the
point where
th
e sidewalls re-
main smooth while
the
tractor
is pulling on
th
e
tire
. Under inflation may also
allow
the
tire
to slip on
th
e rim,
which
in t
urn
will
tea
r
off
the valve
st
em of the
tub
e. Over inflation should also be avoided. It causes loss of
tracti
on, which results
in excessive slippage, causing
tires
t o wear more rapidly.
METHODS OF
INFL
ATION - Inflation w
it
h a hand pump is not difficult when only a
few pounds
are
needed to inflate to
the
recommended pressure.
Spark plug
tire
pumps which will infl ate
th
e tire in
fr
om 5 to 6 minutes can be pur-
chased from your dealer.
AIR
PRE
SSURE SHOULD BE C
HECKE
D
FREQUENTLY
- A
ir
pr
essur
e should be
checked ev
ery
week, and should not be allowed to drop below the recommended
pressure. A special low
pr
essure gauge,
with
one pound
gra
duations (such as a
Schrader No. 9350) is necessary in
ord
er
to get accurate inflation. Gauges should
be checked occasionally
at
a
tire
service station, as they get
out
of ord
er
and a
correction in
the
reading
might
have to be made. Always use caps on
the
valves as
this
pr
events loss of
air
.
It
is not ad visable to reduce
air
pr
essure in
order
to
increase t
ra
ction as damage to tire is likely to result.
CARE OF
TIRE
S - To insure the maximum of hours of service, watch
the
tr
ead lugs -
if they
wear
too fast, immediately add more weight.
To cut down
th
e slippage, check
for
high air pressure. Keep
tir
es
fr
ee
fr
om oil or
grease, and avoid driv
ing
over sh
arp
obstacles, such as stones, etc., which might
cut the tires. All cuts should be
repaired
immediately.
TIRE
PROTE
CTION DURING STORAGE - When not in use yo
ur
trac
tor
should be
stor
ed so
that
the
tir
es
ar
e
prot
ected
fro
m the li
ght
. Bef
or
e storing,
th
e
tir
es
should be
th
oroughly cleaned with watel'.
If
it
is to be stored for a long p
eriod
,
jac
k it up so
that
th
e load is off
th
e
tir
es.
If
it is
not
jacked up,
tir
es should be checked
at
regular
int
ervals for
pr
op
er
infla-
tion.
AIR
PRE
SS
URE
ON TRACTORS TO BE
SHIPPED
- When a
tract
or is
transport
ed
by rail
or
truck, all 4 ply
fr
ont ti res should be infl
at
ed to 30 pounds; all 6 ply
front
tir
es to 36 pounds; all
rea
r t
ir
es to 30 pounds.
This
makes possible rigid
blocking and
pr
ev
ents
bouncing.
IMPORTANT -
After
the
tract
or is unloaded, and before the
tr
actor is o
perat
ed, be
car
e-
ful to deflate
the
tires to
th
e correct pres
sur
es, as given in a
pr
eceding paragraph.
32
Op
erating
Instructions for Cockshutt "30" Tractor
https://tractormanualz.com/
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