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Restoration & Repair Tips Board

Re: John Deere loader very slow to raise

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08-20-2012 09:30:35

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Somebody probably hosed you for the front pump rebuild. That front pump is usually the last item to require service. Where is the loader oil supplied from the tractor and where is it returned? Has the loader always been slow or is this a new problem? Does the tractor have an independent hydraulic pro and the high/low transmission lever on the dash? Anybody check the transmission oil screen? Was anything found in the trans oil?

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08-20-2012 10:17:13

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 Re: John Deere loader very slow to raise in reply to buickanddeere, 08-20-2012 09:30:35  
We bought the tractor without the loader and later put a used loader on it. The loader has been extremely slow since we put it on. From memory the loader supply is tapped into a line supplying the rear scv and the return is tapped in at the filter housing. We had the hyd. pump rebuilt thinking it was at fault but, that was not the fix. How would one test flow to and from the loader control valves?

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08-20-2012 11:48:28

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 Re: John Deere loader very slow to raise in reply to jrod1981, 08-20-2012 10:17:13  
The front pump needs a strong supply of oil from the trans pump or the front pump will never have output Measure port pressure at the transmission and flow to the front pump.

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