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New Holland Skidsteer Forum
L555 Please save me from divorce!
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<blockquote data-quote="Mike10" data-source="post: 82197" data-attributes="member: 5461"><p>You either have a bad charge check valve or you have serious internal leakage in the hydro pumps. Did you use a reputable firm to rebuild your hydro? To check if you have excessive internal leakage you will need to block the loader up again and remove the hose from the connecting line between the front and rear hydro pumps that goes to the chaincase. If I remember right it will be the small line on the left side, left side determined by standing behind the loader and facing forward, of the pumps. The line connects the two pumps to the chain case Once the hose is removed you will need to get a hose that will connect to the line between the two pumps. It will need to be long enough to reach a bucket. Start the engine and see how much oil is coming out by watching the time it takes to pump out a couple of gallons. If you have a heavy stream right away you have a bad internal leak. Stroking the hydro levers will cause a slight increase of leakage, you just need to determine how many GPM is being leaked. Take this information to the people who rebuilt the pumps. You also want a gauge attached so you can see how much the charge pressure drops when stroking the hydro levers.</p></blockquote><p></p>
[QUOTE="Mike10, post: 82197, member: 5461"] You either have a bad charge check valve or you have serious internal leakage in the hydro pumps. Did you use a reputable firm to rebuild your hydro? To check if you have excessive internal leakage you will need to block the loader up again and remove the hose from the connecting line between the front and rear hydro pumps that goes to the chaincase. If I remember right it will be the small line on the left side, left side determined by standing behind the loader and facing forward, of the pumps. The line connects the two pumps to the chain case Once the hose is removed you will need to get a hose that will connect to the line between the two pumps. It will need to be long enough to reach a bucket. Start the engine and see how much oil is coming out by watching the time it takes to pump out a couple of gallons. If you have a heavy stream right away you have a bad internal leak. Stroking the hydro levers will cause a slight increase of leakage, you just need to determine how many GPM is being leaked. Take this information to the people who rebuilt the pumps. You also want a gauge attached so you can see how much the charge pressure drops when stroking the hydro levers. [/QUOTE]
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