8070 Hydraulics
Printed From: Unofficial Allis
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=130984
Printed Date: 21 May 2025 at 1:32pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: 8070 Hydraulics
Posted By: Smokey Joe
Subject: 8070 Hydraulics
Date Posted: 06 Nov 2016 at 5:09pm
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???
-------------
210,220,7010 AC,7020 AC,7040 AC,7045 Pedal Tractor, 8050& 8070 and Parts and Pieces of Many More!!!
|
Replies:
Posted By: DrAllis
Date Posted: 06 Nov 2016 at 5:42pm
|
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.
|
Posted By: Smokey Joe
Date Posted: 06 Nov 2016 at 6:00pm
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!!!!!
-------------
210,220,7010 AC,7020 AC,7040 AC,7045 Pedal Tractor, 8050& 8070 and Parts and Pieces of Many More!!!
|
Posted By: tornado8070
Date Posted: 06 Nov 2016 at 7:33pm
Make sure the main suction line on he pump is tight and not sucking air. Takes a 2" wrench I beleive.
-------------
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.
|
Posted By: wekracer
Date Posted: 07 Nov 2016 at 5:59am
|
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.
|
Posted By: Smokey Joe
Date Posted: 07 Nov 2016 at 7:17am
Thanks for all the replies!!!!
-------------
210,220,7010 AC,7020 AC,7040 AC,7045 Pedal Tractor, 8050& 8070 and Parts and Pieces of Many More!!!
|
|