skytrak 10042 leans over left if parked not perfectly level

[phx]

If i park my 10042 telehandler with a small lean to the left after a few days it seems to bleed down and tilt left.

I looked at http://www.gcironparts.com/GCIronPartsSelection.asp?manuID=10&catID=59&prodID=122573&ssID=21723&highlight=48545

And i see #7 and #8 valve choke/check and assume its one of the two. I will probably replace both but i hope you experts can tell me - is it probably one of these and if so which one.


Thanks!!!!

 

[willie59]

Welcome to HEF phx. :drinkup

Unfortunately, items 7 and 8 aren't causing your problem, they're simply orifice fittings that limit the speed of how fast the cylinders operate. But I doubt any of us will be able to tell you exactly what's causing your problem the way that system is designed. Could be one of the cylinders has a bad piston seal that's leaking oil to the opposite cylinder, and that Stabiltrack cylinder on one side of the axle has several solenoid valve, check valves, and pressure reducing valves. A failure of any of these valves as well as o-ring failures of these valves could cause the circuit to do some funky things. You've got a tricky problem on your hands to troubleshoot.

 

[phx]

thanks - is it unsafe to use? So far if i parked it for a few days it can start to sag unless i put some effort into getting it vertical.

 

[willie59]

I really can't say phx, I've never worked on one of those machines. I'm only saying that I can see a number of components that can cause your problem. And given my inexperience with them I don't have a clue how to determine what is causing the problem. I wish I could help, but sadly don't know. :beatsme

 

[phx]

Sorry to bump thread up - was hoping someone who has hands on experience with this model/circuit can assist. Thanks!

 

[grandkobelco]

The cyl on the rear axle does not frame tilt the machine, it controls the rear axle between three modes, free pivit, slow pivit, and locked. Depending on the position of the boom(above 40) and if your driving or park brake on. Threaded into the cyl on the front axle there are a pair of check valves, try switching these and see if that changes things. You may have a bit of contamination in one of them allowing you machine to drift left. Make sure you have frame blocked so it cant free fall left or right before pulling these valves out.

 

[phx]

Thank you for your reply. The valves have 2 different part numbers - i surmise its for a different "crack" PSI. If these are highly suspect i am going to drop $100 on a fresh pair and move on.

Any advice on where to block the frame correctly. I havent looked yet - maybe its obvious.

 

[icestationzebra]

Thank you for your reply. The valves have 2 different part numbers - i surmise its for a different "crack" PSI. If these are highly suspect i am going to drop $100 on a fresh pair and move on.

Any advice on where to block the frame correctly. I havent looked yet - maybe its obvious.

They are probably different because each side of the cylinder has different effective areas, requiring a different cracking psi like you said.

As far as blocking the frame goes, lower the boom all the way and wedge wood between the frame and top of the axle. Make sure to do both sides, or tilt all the way one direction and block the other side.

ISZ

 

[pajibson]

I was kind of watching this one just out of curiousity. Did it ever get resolved?