mackniac Posted July 18, 2013 Share Posted July 18, 2013 a new problem occuredMack RB688S1990E7-400camel back 46Kmulti-leaf shackle spring 18Kdump truckthe helper side tire is jerking up & down empty around 60 to 65 km(37 to 40 mph) and then get lot worst when loaded at around 70 km( 45 mph) . wheel seems to jump up & down tapping on the road . The steering is not jerking no feel of shimmy in the steering .The truck stays straight does not feel like it is going to bring me in the ditch nothing wobbles.what did I checked1- tires are good (not broken not used abnormaly)2- tires been balanced3- tire from helper side went to driver side and vice versa ( same problem)4- king pin been check and seems to have normal play5- bearing been check seems good too6- spoke wheel been checked seems good too7- brake drum been checked seems good too8- schock absorber been checked seems good too9- tie rod end are sound10- all spring leaf are ok no cracks not broken11- all power steering rods and all others rods are sound12-one thing that I found is that the shackle seem to be very close ( 1/8 )(see attached pics with the red arrow) to the rear holder helper side ,on the oposite side (driver ) it is aroud 3/4 of an inch of space , also there is a play in the front pin of the frontshackle .some people are telling it can be drive shaft related ( wich I checked and accordind to my knowledge all the plays seems to be within normal) .anyone had a similar problem ? Quote Makniac , collector and customizer of die-cast model in 1/50th scale Link to comment Share on other sites More sharing options...
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.