Posted by IH fan on September 18, 2013 at 15:53:20 from (174.70.169.139):
In Reply to: Loader Issues posted by Dude with a 300 on September 18, 2013 at 04:11:41:
It could be air, but I'd be surprised if it is, unless you have had the system open recently, meaning a hose changed or something similar. However, if it is air, try driving the front wheels of the tractor up onto something so the loader cylinders will retract all the way. If there is air trapped in there, running it fully up and fully down a few times should get more of it worked out. If that doesn't help, there is sometimes a "pilot operated check valve" built into a loader, depends on the loader, where when lowering the loader, the pilot check needs to have pressure applied to open the check and let the loader cylinders retract. the fact you are hearing pressure for a moment before it lowers is an indication it may have one of those checks, and it may be taking too much pressure to open it and therefore building too much down pressure before the check opens. If there is a block in the line going to the cylinders and both the up and down lines go through that block, this could be the problem.
There is many times a check block in the bucket cylinder lines and is usually mounted somewhere behind the bucket on the loader frame cross-member.
This post was edited by IH fan at 15:54:09 09/18/13.
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