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Smokey Joe 
Silver Level
Joined: 29 Aug 2010
Location: Tennessee
Points: 189
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 Topic: 8070 Hydraulics
Posted: 06 Nov 2016 at 5:09pm |
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I have an 8070 Tractor with Power Director it has a hydraulic whine to it, when you use loader it's terrible. Loader is hooked in back using remotes. A little history, I rebuilt the power director and torque limiter and cleaned the 30 years of rust out of floor of tractor. Also replaced gasket between rear end and transmission now i have a whine. 1500 rpms sounds good full throttle horrible and at idle, if you hit diff lock while using loader it gets even worse???
I didn't mess with anything from high pressure hydraulic side but seems like pump is stuck in pump position. Any body else have this issue before???
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210,220,7010 AC,7020 AC,7040 AC,7045 Pedal Tractor, 8050& 8070 and Parts and Pieces of Many More!!!
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DrAllis
Orange Level Access
Joined: 12 Sep 2009
Points: 21469
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Posted: 06 Nov 2016 at 5:42pm |
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Sounds like a classic example of the hydraulic pumps high pressure hose going back to the 3point valve is touching the cab or diff lock pedal linkage.
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Smokey Joe
Silver Level
Joined: 29 Aug 2010
Location: Tennessee
Points: 189
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Posted: 06 Nov 2016 at 6:00pm |
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I hope so, thats exactly what i told customer but he just doesn't want to believe me. I will investigate further thanks for reply!!!!!
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210,220,7010 AC,7020 AC,7040 AC,7045 Pedal Tractor, 8050& 8070 and Parts and Pieces of Many More!!!
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tornado8070
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Joined: 24 Mar 2013
Location: MI
Points: 1341
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Posted: 06 Nov 2016 at 7:33pm |
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Make sure the main suction line on he pump is tight and not sucking air. Takes a 2" wrench I beleive.
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09’ DT205B, 08’ DT220A, 83' 8070 MFWD, 83’ 8070 85’ 8050 MFWD, 83' 8030, 82' 8010, 85’ 6080 MFWD, 84’ 6080, 79' 7020, 85' M3 RWD, 85' 920 diesel,AC C-50 forklift.
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wekracer
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Joined: 13 Oct 2009
Location: Tebbetts, MO
Points: 1587
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Posted: 07 Nov 2016 at 5:59am |
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I posted the same question 4-5 years ago with my 8050. Turned out to be a hydraulic line touching the bottom of the cab. Rerouted the line and it quit. Make sure no hydraulic lines touch the cab.
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Smokey Joe
Silver Level
Joined: 29 Aug 2010
Location: Tennessee
Points: 189
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Posted: 07 Nov 2016 at 7:17am |
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Thanks for all the replies!!!!
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210,220,7010 AC,7020 AC,7040 AC,7045 Pedal Tractor, 8050& 8070 and Parts and Pieces of Many More!!!
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