free case of beer!!!!!!!!!!!

[magnet]

as the title says i have a free case of beer, you slect brand and size if case, if you can figure out this one for me.
i have a customers unit in shop. unit is a tri drive mixer with tandem steer. it is hard to steer when loaded. we have replaced both the slave steering box and the pump as well as had the master box inspected. all components are as new. unit steers a bit then hits the pressure relief in the pump. we have inspected all steering linkage and all is good. if we jack up 1 wheel,any wheel, on the front it steers from stop to stop with ease. removed and checked all kingpins and bearings and all is in as new condition. unit only has 50000km on it. problem just became evident lately. customer has 8 more identical units with no issues. i am out of ideas anybody have one. winner will be notified by pm. thanks.

 

[Summitric]

Possible seized tie-rod? Is it a drive axle joint problem? Does it have a steering stabilizer &/or dampner

 

[JaySimon]

Is the pressure relief valve been tampered with? Perhaps set to release far too early?

*crosses fingers that it is that easy*

 

[skinnybitch]

poppet adjustment?

 

[magnet]

been there done all that already i have about 40 hrs into this pos already. the last shop, one of the big three large truck dealers in edmonton, has a 10g bill on this thing and couldn't find the issue yet.

 

[pirate31red]

u joints on the steering column are ok

 

[magnet]

yup. and only seems to do it while turning left. arrgh. anyone got some dynamite.

 

[Stompin Tom]

Kick the lockers out.

 

[magnet]

Kick the lockers out.

doin it while it is stationary, cant even turn the pig.

 

[JayBec]

let someone else fix, so you dont blow a gasket tryin to fix it

 

[Summitric]

So with the outer tie-rods undone, it's okay? And it's okay when the front wheels are off the ground?

 

[99summitx]

I know you said steering linkage all good but did you check if steering post spline is sliding in and out, if not feels fine in strait line but binds when turning, just a thought as it happened to me. If that's it I'll take a case of "The End of History" beer please :d

 

[Stompin Tom]

You have probably already tried this, but at this point I would disconnect the pitman arm from the master steering box and any connections to the aux steering box, try turning the steering wheel. If everything is good, then reconnect the pitman arm but leave any connections to the 2nd steering axle disconnected.

process of elimination, see if everything works on the 1st steering axle, then add in the 2nd, the point of which you have a failure should tell you where the problem is.

 

[Stompin Tom]

as somebody else stated, I would try a new pressure releif valve as well.

 

[magnet]

have tried pretty much all of that. steer box is brand new as is the press. relief valve. if you have it jacked up and all disconnected from the boxes everything turns fine. thats why i was figuring possibly kingpin bearings. but all checked out good.
would really like to pass the buck to someone else but they keep bringing it back to me.

 

[Stompin Tom]

just for giggles I would try a different new pressure releif valve.

This is just an off the wall thought, but could the pressure releif valve in a tandem steer axle have a higher pop off than a standard single steer axle, if so would it be a different releif valve? Just grasping at straws.

 

[Summitric]

just for giggles i would try a different new pressure releif valve.

This is just an off the wall thought, but could the pressure releif valve in a tandem steer axle have a higher pop off than a standard single steer axle, if so would it be a different releif valve? Just grasping at straws.

and is the pressure relief valves bolted onto the steering boxes? If so, are they able to be moved slightly? Some older automotive gear boxes you could change the amount of assist to one side or the other by slightly moving the relief valve when loosening the hold down bolts, then tighten them up..... Very little known trick

 

[magnet]

just for giggles I would try a different new pressure releif valve.

This is just an off the wall thought, but could the pressure releif valve in a tandem steer axle have a higher pop off than a standard single steer axle, if so would it be a different releif valve? Just grasping at straws.

good point but the press stays the same. flow is what actually makes the boxes work. if the pump was to small it would just be slow to turn and if i reved up would help it a bit. this thing is a real pain in the azz. myself,employees, hydra steers techs and the other shop it wa sat, and my shop foreman in our quebec branch are all stumped.
I really appreciate all the ideas though. we all know once i find the problem it's going to be a why didn't i check that first thing.

 

[OVERKILL 19]

as the title says i have a free case of beer, you slect brand and size if case, if you can figure out this one for me.
i have a customers unit in shop. unit is a tri drive mixer with tandem steer. it is hard to steer when loaded. we have replaced both the slave steering box and the pump as well as had the master box inspected. all components are as new. unit steers a bit then hits the pressure relief in the pump. we have inspected all steering linkage and all is good. if we jack up 1 wheel,any wheel, on the front it steers from stop to stop with ease. removed and checked all kingpins and bearings and all is in as new condition. unit only has 50000km on it. problem just became evident lately. customer has 8 more identical units with no issues. i am out of ideas anybody have one. winner will be notified by pm. thanks.

Are those front axels driven?

 

[OVERKILL 19]

Do U have a broken "frame" or "suspension component" putting too much stress on the steering when loaded? If the fronts are driven, axels broke or binding when turning to the left? I'm throwing darts too!