PS Magazine - TB 43-PS-575
PS, The Preventative Maintenance Monthly
ISSUE 575
OCTOBER 2000
PS 575
7
OCT 00
PS 575
6
OCT 00
hree different tires are 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 from
HEMTT . . .
Note that the XZL is used on the
M1070 heavy equipment transporter
and the M1074/M1075 palletized load-
ing 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, even
though the XL tread appears to be di-
rectional.
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 evi-
dence 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, re-
port it. Your DS shop must adjust the
steering stop bolts to the correct clear-
ance. The adjustment information is
found in TM 9-2320-279-34-2. DS
should note that TACOM has increased
the clearance from
3
/
4
inch to 1 inch
since the TM was printed.
TM 9-2320-279-24P, you 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 is not necessary. Both tires were
tested together and are compatible on
the same axle.
Here’s the word from Para 2-7 of
TM 9-2610-200-14,
Care, Mainte-
nance, Repair, and Inspection of Pneu-
matic Tires and Inner Tubes
: “Minor
variations of tread designs, as encoun-
tered 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. This tire, a Michelin XZL
(16.00R20, load range M), can be used
on the truck only in a full set of eight
tires. It cannot be mixed with the other
tires, however, because its tread is not
compatible.
Goodyear
AT2A radial
Michelin
XL radial
Michelin
XZL radial
Check for tire rub on equilizer bar
➤
➤
we're
compatible
with
each other!
but you're
not
compatible
with us!
i'm used
on the
het
and
pls
, and
you can't
be!
➤
➤
PS 575
7
OCT 00
PS 575
6
OCT 00
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