PS Magazine - TB 43-PS-571
PS, The Preventative Maintenance Monthly
ISSUE 571
JUNE 2000
5
Reseat the tire bead by adding up to
40 psi of air. If the TM-recommended
air pressure for the tire is less than 40
psi, inflate it to no more than the rec-
ommended pressure.
Carefully inspect the assembly to
make sure that the tire bead and rim
components have seated right. Don’t
use more than 40 psi or any other
method to force the bead or compo-
nents to seat. If it’s not seating, deflate
the tire and lubricate the bead area.
Then reinflate to 40 psi. If the bead
and components still don’t seat, de-
flate the tire, demount it, disassemble
the wheel and check the tire, rim and
wheel components for damage.
Once the bead and rim components
seat right, add air up to the TM-recom-
mended pressure.
Check the final seat of the bead and
rim components before removing the
wheel from the cage or installing it on
the vehicle. If you notice anything that
doesn’t look right, do not remove the
wheel from the cage until it’s safe to
do so.
Step by Step
Even if you are using a cage, stand
a minimum of 10 feet away from the
wheel and to the side, facing the tire
tread. That’s why you need the infla-
tion gauge and its 10-ft hose. It gets
you away from the danger zone. The
danger zone is the area in front of or
behind the rim or facing the tire
sidewalls. Make sure no one stands in
the danger zone while you’re adding
or removing air.
If you have a locally fabricated cage,
it must be inspected and approved be-
fore it can be safely used. Contact your
safety office.
Use tire inflation gauge, NSN 4910-
00-441-8685. It comes with a 10-ft
hose, quick-disconnect coupling and
two coupler adapters. Attach the gauge
assembly to your air supply hose with
the straight pipe-to-tube adapter, NSN
4730-00-266-0533, that’s in the Com-
mon No. 1 or No. 2 shop set’s brass
fitting kit. These items may also be in
your vehicle -10 TM’s additional au-
thorization list (AAL).
Safety Equipment and Tools
Use only an OSHA-approved safety
cage. NSN 4910-01-373-0267 gets a
cage that’s 40
3
/
4
inches long, 25 inches
wide and 56 inches tall. Most tactical
vehicle tires will fit inside. For larger
tires, NSN 4910-00-025-0623 gets a
cage that’s 78
3
/
4
inches long, 35 inches
wide and 86
1
/
4
inches tall.
If you’re working with a multi-piece
wheel,
inflate or deflate
it only in an
OSHA-approved cage. Multi-piece
wheels can be identified by a retaining
ring or side flange which is seated in a
groove around the rim. The ring or
flange holds the tire bead in place.
Use
adapter between
gauge and supply hose
that's right,
stay at least
10
feet
away from
the cage
during
inflation.
how
did
you
learn
so much
about
tire safety?
i learned.
..
the
hard
way
!
thanks
for the
warning!
u
u
u
u
u
u
u
u
u
Use inflator gauge with 10-ft hose
Be aware of the"Danger Zone"
Doing the Work
If you’re working with a single-piece
wheel, inflate or deflate it either in a
cage or on a positive wheel lock-down
device (automatic tire mounter/
demounter) or while it’s mounted on
the vehicle. This info is also good for
bolt-together wheels, like those on the
HMMWV.
4
JUN 00
Rings hold bead in place
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