[AT] Hydraulics Help

[charlie hill]

I'm wondering (without being able to see the loader) if the bucket, when 
curled up, is rotated to the point where it's own weight and gravity are 
pulling the cylinder ram?

Charlie

-----Original Message----- 
From: Will Powell
Sent: Friday, May 27, 2011 6:43 AM
To: Antique tractor email discussion group
Subject: Re: [AT] Hydraulics Help

Is the cylinder extending while the pump is running?

I'm not a hydraulic expert, but if its easy to pipe in a valve, or how about 
a plug? Somehow block the line and see if the cylinder still extends. That 
would tell you if the cylinder has a leak at the piston...

My old HD6G dozer leaks, but not that fast. If I lift the bucket it will 
drop in about 4 hours. Not fast enough to bother fixing.

Regards,

Will

----- Original Message ----- 
From: drupert at seanet.com
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Friday, May 27, 2011 2:47:16 AM
Subject: [AT] Hydraulics Help

I have a question - Is there a relatively easy way to determine if a
hydraulics problem I am having is in the Valve or in the Cylinder.

The Bucket on an old Loader I have has a double acting Cylinder. Once the
Bucket is curled up (i.e., the Cylinder is retracted) the Cylinder will
slowly start extending on its' own and will be fully extended in a couple
of minutes. The external leaking - although annoying - is relatively
minor. I am thinking that maybe the seal on the Piston in the Cylinder is
bad allowing the Piston to move through the fluid. If the Valve is the
problem I guess I am not sure what the failure mode could be.

I am hoping the problem is the Cylinder as it will be the easiest for me
to fix but I don't want to waste time there if the problem is somewhere
else. Any ideas on how to nail this down ... I am guessing someone has
run into this before.

Thanks -
Dudley

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