TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
Page 1064 of 1205
8-9. FRONT WHEEL TOE-IN ALIGNMENT (Cont’d) NOTE • To ensure proper alignment, vehicle must be at curb weight or normal operating weight. • 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. 1. Mark line (4) on center tread (1) of tire (2) 16-1/2 in. (42 cm) from ground. 2. Measure total width of tire tread (3) and record. 3. Mark line (5) on center tread (1) at one-half total tread width (3). 4. Repeat steps 1 through 3 for opposite tire. 5. Measure distance between points of measurement on front side of tires (2) and record. 6. 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). 7. 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 measure- ment on rear side of tires, tires have toe-out. • If toe-in alignment does not meet specifications, repeat check- ing procedures to eliminate any possible reading errors. 8. Subtract measurement for front side of tires (2), obtained in step 5, from measurement for rear side of tires (2), 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.). 9. If toe-in is within specifications, refer to task c. and perform step 5. b. Toe-in Check TM 9-2320-387-24-1 8-26 Table 8-1. Toe-in Alignment Adjustment Specifications. TOE-IN (FRONT) ADJUSTMENT SPECIFICATIONS VEHICLE PAYLOAD M1113 M1114 Vehicle @ curb weight 1/4 ± 1/4 in. or normal operating (6 mm ± 6 mm) weight