PS Magazine - TB 43-PS-613
PS, The Preventative Maintenance Monthly
ISSUE 613
DECEMBER 2003
Here’s the word from Para 2-7 of TM 9-2610-200-14,
Care, Maintenance, Repair,
and Inspection of Pneumatic Tires and Inner Tubes:
“Minor variations of tread
designs, as encountered from one manufacturer to another, may be used providing
the sizes and tire constructions (bias or radial) are compatible.”
•
There is another NSN
shown in the HEMTT parts
TM. NSN 2610-01-334-
2694 brings a Michelin
XZL (16.00R20, load range
M) that can be used on the
truck
only in a full set of
eight tires.
It cannot be
mixed with the other tires.
Note that the XZL is used on the M1070 heavy equipment transporter and the
M1074/M1075 palletized loading system tractor. Just because the XZL can be used
on the HEMTT does
not
mean that the XL or AT2A can be used on the HET or PLS.
They cannot!
The XL is not large enough for either vehicle, and the AT2A did not
pass the use test for either truck.
•
All three tires have non-directional tread, so it does not matter how they are
mounted on the wheels. The tread can point forward or backward, although the
tread on any XL tires used should point in the same direction.
•
Some or all of these tires
may
rub
against
the
HEMTT’s front axle equal-
izer beam during a hard left
or hard right turn. Eyeball
the beam for evidence of
rubbing. There must be at
least 1 inch of clearance
between the tread and the
beam when the wheel is
turned as far as possible to
the left and right.
If you find evidence of rubbing, report it. Your DS shop will adjust the steering
stop bolts to get the correct 1 inch of clearance.
•
The Michelin XL tire should never be mounted to a bolt-together wheel. The XL
requires an inner tube and inner tubes are not safe when used with bolt-together
wheels. You
can
mount the Goodyear AT2A on a bolt-together wheel as long as you
don’t use an inner tube.
Dear Sergeant S.J.S.,
There are three different tires
approved for use on HEMTT
vehicles. Two of them work well
with each other, but the other one
is a loner. Here are the details:
•
When you order a replacement
tire using NSN 2610-01-126-
1576, you’ll get either a Michelin
XL (16.00R20, load range J) or a
Goodyear AT2A (16.00R20, load
range M).
Both tires can be used on the
same truck without damage to the
tires or the truck. It’s a common
practice to use all the same tires
on a single axle, but it’s not nec-
essary. Both tires were tested
together and are compatible on
the same axle.
PS 613
DEC 03
19
HEMTTs…
Dear Half-Mast,
I was about to change some tires
on an M984E1 HEMTT wrecker when
I noticed that we had different tire
brands in stock. The tires are all the
same size, but they have different
tread patterns.
What’s the scoop on mixing and
matching different brand tires on the
same vehicle?
SFC S.J.S.
different
brands,
different
tread
patterns.
hmmm… is
this a wise
choice?
Michelin XL
radial
Goodyear AT2A
radial
Michelin XZL
radial
Check for tire rub on equalizer bar
613. 18-19 (C)
11/3/03
1:50 PM
Page 1
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