Walking beam suspension allowance

On mine the bushings are weather-checked on the outside but still in place, and it walks out a bit when turning loaded. I would think the only way to disqualify them would be to measure walkout, but I have no idea how much would be allowed.

There probably aren't many shops that deal with them anymore, but I don't think they are terribly expensive to have re-bushed if you think you might be getting close anyway.

I'll run out and take some photos of mine for comparison.

 

Maybe my centers are due for replacement, but I just had our annual inspection done at Peterbilt and they did not say anything about it.

 

I don’t know the specifics of a walking beam but I have found that some folks see cracking in rubber bushings and automatically say it’s bad until they are forced to check for movement then find none.

 

I wouldn't call weather cracking like in Oxbow's picture a big deal. Now pounded out and sloppy is another thing.

 

I'm not even sure where my old books ended up. They'd have some good information. Might have been lost when I moved

 

Yous guys should get gold medals for driving them rough riding trucks.

 

With 55k on the drives it's not bad!

Empty on washboards is a different story.

 

Here is a screenshot of the most current Alberta cvi manual regarding walking beams. As I read it you are allowed 7mm clearance on the cross tube bushing.

I'm not sure about bc, but alberta cvi manuals are a free download from service alberta.