TM 9-2320-280-20-2
8-10. FRONT WHEEL TOE-IN ALIGNMENT (Cont’d)
b. Toe-in Check
NOTE
1.
2.
3.
4.
5.
6.
7.
8.
Vehicle must be on level ground with wheels set straight ahead.
Steps 1 through 3 will determine centerline of tire.
“Point of Measurement” for checking toe-in will be where lines
marked in steps 1 and 3 intersect.
Mark line (4) on center tread (1) of tire (2) 16-1/2 in. (42 cm) from ground.
Measure total width of tire tread (3) and record.
Mark line (5) on center tread (1) at one-half total tread width (3).
Repeat steps 1 through 3 for opposite tire.
Measure distance between “Points of Measurement” on front side of tires (2) and record.
Rotate tires (2) by moving vehicle forward until “Points of Measurement” are 16-1/2 in. (42 cm) above
the ground at rear side of tires (2).
Measure distance between “Points of Measurement” on rear side of tires (2) and record.
NOTE
If measurement is larger on front side of tires than measurement
on rear side of tires, tires have toe-out.
If toe-in alignment does not meet specifications, repeat checking
procedures to eliminate any possible reading errors.
Subtract measurement from front side of tires (2), obtained in step 5, from measurement from rear side
of tires (2), obtained in step 7. The result of this subtraction represents inches of toe-in. Refer to table
8-1 for toe-in specifications. If toe-in does not meet specifications, adjust toe-in (task c). Refer to table 8-
1 for toe-in adjustment specifications.
9. If toe-in is within specifications, refer to task c and perform step 5.
NOTE
Vehicles should be at curb weight to ensure proper alignment. Refer
to table 8-1(a.) for adjustment specifications.
Table 8-1(b.) is optional and can be used when the vehicle’s average
operation is at less than gross vehicle weight. Vehicle is to be loaded
to its average operating weight when using this table.
Table 8-1. Toe-In Alignment Adjustment Specifications.
TOE-IN (FRONT) ADJUSTMENT SPECIFICATIONS
BIAS TIRE
RADIAL TIRE
MODELS:
MODELS:
MODELS: M996, M996A1,
MODELS
M998, M998A1, M1025,
MODELS:
VEHICLE
M998,
M966,
M997,
M1097,
M1025, M1026, M996, M997,
M1025A1, M1025A2, M1026,
M997A1,
PAYLOAD
M1097A1,
M1035, M1038, M1036, M1037,
M1026A1, M1035, M1035A2,
M997A2,
M1097A2
M1043, M1044 M1042, M1045,
M1035A1, M1036, M1038,
M1037
M1046
M1038A1, M1043, M1043A1,
M1043A2, M1044, M1044A1,
M1042
M1045, M1045A1, M1045A2,
M1046, M1046A1
a. Vehicle @ curb
7/16 ± 1/8 in.
5/16 ± 1/8 in.
1/4 ± 1/16 in.
5/16 ± 1/16 in.
1/8 ± 1/16 in.
weight
(11 mm ± 3 mm)
(8 mm ± 3mm)
(6 mm ± 1.5 mm)
(8 mm ± 1.5 mm) (9.5 mm ± 1.5 mm)
b. Vehicle @ normal
1/4 ± 1/8 in.
1/4 ± 1/8 in.
1/16 ± 1/16 in.
1/16 ± 1/16 in.
1/16 ± 1/16 in.
operating weight
(6mm ± 3 mm)
(6 mm ± 3 mm)
(1.5 mm ± 1.5 mm)
(1.5 mm ± 1.5 mm) (1.5 mm ± 1.5 mm)
(optional)
8-34
