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Herb(GA) 
Orange Level Access
Joined: 15 Sep 2009
Location: United States
Points: 1039
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 Topic: Overloading a 720?
Posted: 31 Mar 2019 at 3:35pm |
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I really enjoy playing with the AC720 (in a large vegetable garden). I have used a plow, tandem disc, and cultivator. I sure do not intend to overload the hydro. Are there indications that one should be aware of when one has the hydro loaded to near max? Herb(GA)
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den/southern illinoi
Orange Level
Joined: 11 Sep 2009
Location: Sparta, Illinoi
Points: 2029
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Posted: 31 Mar 2019 at 4:09pm |
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As I understand it...you have 2 lights on the dash. One is engine oil pressure warning and the other is the hydro warning light. Lets say you are in high range and the hydro light comes on...it is getting too hot so you should shift down a range (or 2). Now is this telling you if you are junking your hydro...yes and no. If you persist with the high range and light on...you are not doing your hydro any good. Wish I could tell you more. Den
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Own 4 wheel 20, 2-5015, 5020 and associated equipment and 2 electric forklifts.
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Todd Domann
Bronze Level
Joined: 15 Jan 2010
Location: LouisburgKS
Points: 47
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Posted: 19 Apr 2019 at 6:45am |
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Den, Do you know what the setting of the hydraulic oil temperature switch is.
Thanks, Todd
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Todd Domann
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JoeO(C-MO)
Silver Level
Joined: 12 Oct 2009
Location: 3rd Rock > Su
Points: 132
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Posted: 19 Apr 2019 at 8:31am |
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Manual shows 225 deg. F.
Edited by JoeO(C-MO) - 19 Apr 2019 at 8:34am
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D10 III, D15 II 3 pt, D15 II SC, 170 Gas w/shuttle, 175 Diesel UI ROPS, 185 w ROPS. AC 653 w/6 way blade, ROPS
AC 615 Ind. WD45 running/Parts.
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DrAllis
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Joined: 12 Sep 2009
Points: 21040
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Posted: 19 Apr 2019 at 11:26am |
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Operate the gear transmission in a slow enough gear that the hydro is nearly or fully maxxed out for whatever job you are doing. You wouldn't operate a combine in 3rd or 4th gear when in the field, would you ?? Same with a 616-620-720.
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Todd Domann
Bronze Level
Joined: 15 Jan 2010
Location: LouisburgKS
Points: 47
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Posted: 21 Apr 2019 at 8:13pm |
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Thanks Joe!
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Todd Domann
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AC720Man
Orange Level
Joined: 10 Oct 2016
Location: Shenandoah, Va
Points: 5072
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Posted: 28 Apr 2019 at 9:00pm |
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As Dr Allis said select the proper gear. The tractor really should never strain pulling any of the factory attachments. 1st gear for tiller, brush hog, sickle mower, snow thrower, plow, belly mower, front or rear blade. I have each of those and have never over worked my 720. Have never seen the hydro temp light come on. Belly mower and sickle mower can be run in 2nd gear if the grass isn’t over grown. 3rd gear is a road gear only.
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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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