03-24-2018, 10:01 AM
Is it possible that tag axle is carrying too much weight? Try getting drive & tag axles weighed independently and adjust air pressure regulator for tag air bags to get proper weight on the axle. Another thing to look for is grease or dirt on the shoes from a bad wheel seal. Also, to my thinking push rod travel distance and slack adjusters should be pretty close to the same on all wheels.