Pioneer hydraulic tips
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Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=12245
Printed Date: 30 Jan 2025 at 11:49pm
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Topic: Pioneer hydraulic tips
Posted By: DougG
Subject: Pioneer hydraulic tips
Date Posted: 10 May 2010 at 9:34am
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Do these hyd. tips wear out ? Ive been messin with these for years and noticed somthing yesterday that made me wonder; I was changing hyd. hoses on a 6080 w\ loader ; its got the couplers where a joystick should be ; anyway , the male tip was on the floor, the hose was full of oil, -then there was a puddle of oil and it was draining out of the tip; even with no pressure they shouldnt leak out - should they? This could explain why the dam loader wont stay up\ put ; Ive seen them leak a little in the coupler but never drain out like this
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Replies:
Posted By: Gerald J.
Date Posted: 10 May 2010 at 10:58am
They do wear. They will leak oil if dropped directly on the ball, but usually the residual pressure keeps the ball sealed if the are laid on the ball. Parked with cold oil that heats up in the sun can make them difficult to connect, needing the pressure relieved by bopping the ball on some clean flat surface. That usually makes a mess.
Unless the coupled coupler leaks to the outside, you can't blame the loader not staying up on the coupler. Most likely its a worn valve or cylinder packing. Valves are hard or impossible to fix, pistons are not hard to fix with big enough tools to get the cylinder apart and the right parts and the right tools to get the piston and packing back into the cylinder. Its also necessary to know how that particular cylinder comes apart, its not always obvious and there are several ways the end can be anchored. In the one's I've had repaired, the main piston seal was an o-ring with about 1/4" cross section, but it was worn with a flat.
Its not that great an idea to insist a loader stay up, that just leaves hydraulic pressure on the hoses and plumbing all the time and when one of those gives up, it falls fast. Faster sometimes than the barn cat can move. Or you can move and neither you nor the barn cat is strong enough to catch the loader and not get squashed. Its nice to park it on some wood blocks to keep the bucket from freezing to the ground, but its safest to park it lowered. That also makes it harder to steal the tractor without starting to have the loader dragging on the ground.
Gerald J.
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Posted By: Kurzy
Date Posted: 10 May 2010 at 12:09pm
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I have had pioneer couplers for years. All leaked, took back to fleet many times. Still leaked from new. Just learned to live with it.
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Posted By: DougG
Date Posted: 10 May 2010 at 1:23pm
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It doesnt leak to the outside, and Ive had the loader in the air, unhooded the hoses ,and it stayed right where I had it ; it must be the tractor valves leaking
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