Issue link: http://read.dmtmag.com/i/34501
AXLE ALIGNMENT TANDEM SCRUB ANGLE, SKEW, OR PARALLELISM TARGET THRUST ANGLE A : 0° BibAlign Tolerance .10° ATTACC Plus Tolerance 1/8" or 3 mm MEASUREMENT : A ± B SYMPTOMS A THRUST ANGLE B C THRUST ANGLE A D B : Steer tire shoulder wear Excessive drive tire wear Pulling Tandem hop THRUST ANGLE DEVIATION TARGET MEASUREMENT : C ± D SYMPTOMS THRUST ANGLE B E F STEERING AXLE OFFSET : 0° BibAlign Tolerance < .15° ATTACC Plus Tolerance ± 15 mm for <150" WB, 20 mm for 150-200" WB, 25 mm >200" WB : Steer tire shoulder wear Pulling STEERING AXLE OFFSET TARGET MEASUREMENT : (E ± F) / 2 SYMPTOMS DRIVE AXLE OFFSET G G H H STEERING AXLE SKEW STEERING AXLE SKEW TARGET DRIVE AXLE OFFSET TARGET : 0° ATTACC Plus Tolerance ± 5 mm : Steer tire shoulder wear Pulling : 0” BibAlign Tolerance ± 15 mm ATTACC Plus Tolerance ± 5 mm MEASUREMENT : (G ± H) / 2 SYMPTOMS : Pulling : 0” BibAlign Tolerance ± 0.75° ATTACC Plus Tolerance ± 5 mm MEASUREMENT : Alignment Machine Grease Zerk Fitting to U-Bolt (Left and Right) SYMPTOMS : Pulling Section Nine: Appendix 121