PS Magazine - TB 43-PS-588

PS, The Preventative Maintenance Monthly

ISSUE 588

NOVEMBER 2001
PS Magazine - TB 43-PS-588 - Page 4 of 32
PS 588
NOV 01
4
Make sure lug nuts are tightened
in the proper order and torqued
correctly. Look for the right tight-
ening order in your vehicle’s TM.
If your TM doesn’t show a pattern,
use one simi-
lar to this:
The right torque should be listed in your
vehicle’s TM in the paragraph on removing
and installing wheels. For example, Page 8-6
of the HMMWV’s -280-20-2 shows that 90-
110 lb-ft is the correct torque for lug nuts.
Most toe-in adjustments involve
measuring the distance between
the midpoint of both front tires
when that midpoint is facing the
front of the vehicle and also when
that midpoint is facing the rear of
the vehicle.
To determine how your vehicle
shapes up for toe-in, eyeball the
TM. As an example, front wheel
toe-in alignment is covered in Para
8-10 of the HMMWV -280-20- 2.
The bubble wheel balancer, NSN 4910-01-
093-0167, is part of both the No. 1 and No. 2
Common shop sets. Since you won’t find any
wheel weights in the supply catalogs, here’s a list
of weights:
Wheel Balancing
Torquing Lug Nuts
NSN
2530-
Size
(ounces)
01-235-8688
01-188-1349
00-050-2067
0.5
4
4
NSN
2530-
Size
(ounces)
00-050-2064
00-050-2060
00-709-5922
6
6
16
If you’ve got a bubble
balancer, USE IT!
“What’s shakin’?” takes on an entirely different meaning when the steering wheel
of your wheeled vehicle is doing the shaking.
Generally, the steering wheel will shake when the front wheels aren’t balanced,
the wheel lug nuts are loose, or the toe-in adjustment is off.
If you don’t identify and repair what’s shaking,
your tires are headed for the graveyard, and you
may be, too.
That’s because serious shaking can loosen or
break wheel studs. That leaves you with no con-
trol over your vehicle as you fly down the road.
So find your friendly mechanic and introduce
him to the bubble balancer, the right lug nut
torquing pattern and torque requirements and
details on making toe-in adjustments.
1
2
5
3
86
4
7
Toe-in Adjustments
Always use the
right torque
Check toe-in for
proper alignment
meet
my new
friend!
Tactical Wheeled Vehicles…
w-what’s
with a-all
this
shaking!?
I-I dunno!
It seems to be
c-coming from
this steering
wheel, tho’!
588. 04-05 (C)
10/2/01
3:58 PM
Page 1
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