TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 2 Download
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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