PS Magazine - TB 43-PS-607
PS, The Preventative Maintenance Monthly
ISSUE 607
JUNE 2003
PS 607
JUNE 03
6
PS 607
7
Front Wheel Toe-in Check and Alignment
All the steering inspections and tire balancing in the world won’t do much good
unless you mechanics make sure the front wheels are properly aligned.
That means performing a front wheel toe-in check during every scheduled semi-
annual or 3,000 mile maintenance interval. ‘Course, if abnormal vehicle handling or
control is reported earlier, you’ll need to do it then, too.
Well,
that’s that!
I just finished your
steering inspection
and tire balancing.
sure, but did
you check my
front wheel
alignment?
1.
Place the vehicle on level ground with
the wheels set straight ahead.
2.
On the front side of a front tire, mark
a line on the center tread 16 1/2 inches
up from the ground.
3.
Mark a second line at the center point of the
tire’s width. At that point, both lines should
form a +.
4.
Repeat steps 2 and 3 for the other front tire.
5.
Measure the distance between the center
points of the two + marks and write
it down.
if you’re checking an M103
7
or M1042 model HMMWV,
make sure the s250 shelter
is installed
before
performing the toe-in check.
Then follow these steps…
6.
Rotate the tires by moving the vehicle
straight forward until the center points of the
two + marks are 16 1/2 inches above the
ground at the rear side of the tires.
7.
Measure the distance between the center points of the two + marks again and write it down.
8.
Subtract the front-side tire measurement from the rear-side tire measurement. Then compare
the result with the specifications in the following chart:
Vehicle
Payload
Bias Tire
Radial Tire
Vehicle at
curb weight
Vehicle at
normal operating
weight (optional)
Models:
M998,
M1025,
M1035,
M1038,
M1043,
M1044
7/16
±
1/8 in.
1/4
±
1/8 in.
Models:
M966,
M996,
M937,
M1036,
M1037,
M1042,
M1045,
M1046
5/16
±
1/8 in.
1/4
±
1/8 in.
Models:
M996, M996A1,
M998, M998A1,
M1025, M1025A1,
M1025A2, M1026,
M1026A1, M1035,
M1035A1, M1035A2,
M1036, M1038,
M1038A1, M1043,
M1043A1, M1043A2,
M1044, M1044A1,
M1045, M1045A1
M1045A2, M1046
M1046A1
1/4
±
1/16 in.
1/16
±
1/16 in.
Models:
M997,
M997A1,
M997A2,
M1037,
M1042
5/16
±
1/16 in.
1/16
±
1/16 in.
Models:
M1097,
M1097A1,
M1097A2
5/16
±
1/16 in.
1/16
±
1/16 in.
Models:
M1113,
M1114
1/4
±
1/4 in.
1/4
±
1/4 in.
NOTE:
If the front-side tire measurement is larger than
the back-side tire measurement, the tires have toe-out.
607. 06-07 (C)
5/2/03
12:54 PM
Page 1
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