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Allis 620

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LNG Luke View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote LNG Luke Quote  Post ReplyReply Direct Link To This Post Topic: Allis 620
    Posted: 26 Apr 2012 at 7:34pm
I have a 620 garden tractor that stopped moving all of a sudden dose anyone know of someone who would work on this tractor I live in minooka il any help would be great thanks
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LNG Luke View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote LNG Luke Quote  Post ReplyReply Direct Link To This Post Posted: 26 Apr 2012 at 9:46pm
I changed the filter and the fluid cause that's what the book said to try any other ideas
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DSeries4 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DSeries4 Quote  Post ReplyReply Direct Link To This Post Posted: 26 Apr 2012 at 10:04pm
what stopped?  The engine or hydrostat?
'49 G, '58 D14, '59 D14, '66 D15II, '67 D17IV, '67 D17IV Diesel, '67 190XTD, 620, '77 175, '85 6080
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LNG Luke View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote LNG Luke Quote  Post ReplyReply Direct Link To This Post Posted: 27 Apr 2012 at 3:35am
The hydrostat stopped working the tractor runs fine and I can turn the clutch on and run the loader but it won't move I checked all of the linkage and it's fine I changed the fluid and a new filter and still nothing I'm lost here I just want it to move again I'd fix it myself if I could but I don't know much about the hydrostat
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Gary View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Gary Quote  Post ReplyReply Direct Link To This Post Posted: 27 Apr 2012 at 5:30am
Does it by chance have a 2 speed ( H & L ) gear box that might have got put in neutral ?
 
Being a Hydrostatic Drive - somewhere it has a lever that you shift in to neutral
so that you can roll the tractor around.
 
Gary
 
 
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injpumpEd View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote injpumpEd Quote  Post ReplyReply Direct Link To This Post Posted: 27 Apr 2012 at 6:30am
3 speed transaxle. Could be in neutral. Check the 2 drive belts that run the shaft to the hydro. They are at the rear of engine. 
210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Daveb Quote  Post ReplyReply Direct Link To This Post Posted: 27 Apr 2012 at 9:50pm
Luke  I have had this happen when spline wear out on the shaft going to the final drive. try appling one brake pedel and see if it trys to move or you blew a seal in the back of your hydrostat.   Dave
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LNG Luke View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote LNG Luke Quote  Post ReplyReply Direct Link To This Post Posted: 28 Apr 2012 at 5:03pm
Thanks for all the info yes the 3speed is in gear I tried all of them   I will try he brake thing and see what happens I'll let u guys know thanks for the help if it is a blown seal can u still get replacement ones
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Orange Blood View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Orange Blood Quote  Post ReplyReply Direct Link To This Post Posted: 28 Apr 2012 at 8:14pm
Here's what you need to do.  Lift the rear end off the ground, and try to rotate one tire, while the other brake is locked.  If you can do one side or the other the final drive shaft is stripped.  Our 720 did this.  The shafts have about 1' of splines, but the diff gear only engages about the center 1/2", and they strip if abused.  I was the oldest of three boys, that grew up on that tractor, so it was kinda abused, from a drive train point of view.

Edited by Orange Blood - 28 Apr 2012 at 8:15pm
Still on the farm:
WC C WD WD45 WD45D D14 3-D17 D17LP D19D D19LP 190XT-D 190XT-LP 720 D21 220 7020 7030 7040 7045 3-7060 N7
In the weeds: 3-U UC 2-G B C 7-WC RC WD-LP WF D-17D D21 210
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AC WD45 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote AC WD45 Quote  Post ReplyReply Direct Link To This Post Posted: 29 Apr 2012 at 8:39am
Okay this little "switch" has made me feel really stupid at times. flip up the seat. on top of the gear box on the left side, there is a "neutral switch" with two bolt heads with nipples sticking out of the top. I cant remember if it needs to be all the way up or down, but try both. one position is Neutral, the other is drive. 
"If you meet me and forget me you've lost nothing. If you meet God and forget him, you've lost everything"
1957 Allis Chalmers WD45 wide front with a D17 kit. S/N: WD234847
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D-17_Dave View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote D-17_Dave Quote  Post ReplyReply Direct Link To This Post Posted: 29 Apr 2012 at 11:53am
Originally posted by AC WD45 AC WD45 wrote:

Okay this little "switch" has made me feel really stupid at times. flip up the seat. on top of the gear box on the left side, there is a "neutral switch" with two bolt heads with nipples sticking out of the top. I cant remember if it needs to be all the way up or down, but try both. one position is Neutral, the other is drive. 
Your thinking of the 700/900 series tractors with the Sundstrand pump for the rear end. The 620/720's don't have this hydro bypass setup as they have a cast iron transmision with 3 speeds and neutral. So there is no need to bypass the hydro circut since you can shift the tranny out of gear.
Just to clarify......
I'd pull the cover off the torque tube and watch the shaft driving the hydro. Push the control lever forward and see if the shaft stops spinning. Could just be the belts worn out. After that, try the brake test as mentioned above.
Whatever you find I likely have the parts to help make your repair if I can help out let me know.
Yea, I can fix that.....
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AC WD45 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote AC WD45 Quote  Post ReplyReply Direct Link To This Post Posted: 29 Apr 2012 at 9:05pm
Originally posted by D-17_Dave D-17_Dave wrote:

Originally posted by AC WD45 AC WD45 wrote:

Okay this little "switch" has made me feel really stupid at times. flip up the seat. on top of the gear box on the left side, there is a "neutral switch" with two bolt heads with nipples sticking out of the top. I cant remember if it needs to be all the way up or down, but try both. one position is Neutral, the other is drive. 
Your thinking of the 700/900 series tractors with the Sundstrand pump for the rear end. The 620/720's don't have this hydro bypass setup as they have a cast iron transmision with 3 speeds and neutral. So there is no need to bypass the hydro circut since you can shift the tranny out of gear.
Just to clarify......
I'd pull the cover off the torque tube and watch the shaft driving the hydro. Push the control lever forward and see if the shaft stops spinning. Could just be the belts worn out. After that, try the brake test as mentioned above.
Whatever you find I likely have the parts to help make your repair if I can help out let me know.

Yeaup I realize that now. lol
"If you meet me and forget me you've lost nothing. If you meet God and forget him, you've lost everything"
1957 Allis Chalmers WD45 wide front with a D17 kit. S/N: WD234847
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injpumpEd View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote injpumpEd Quote  Post ReplyReply Direct Link To This Post Posted: 29 Apr 2012 at 9:32pm
Several years ago, my 720 sheared the roll pin that connects the swash plate to the f/r lever shaft. Completely tore it down, re-sealed and gaskets, & new spirol pins, as well as the needle bearings on swash plate shafts. Swapped shafts from side to side. Had to get parts from a simplicity dealer though. Bought a parts manual for a 9020 to give him correct #'s. works good to this day. 
210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
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LNG Luke View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote LNG Luke Quote  Post ReplyReply Direct Link To This Post Posted: 01 Jun 2012 at 12:17am
I found the problem the right shaft that comes out of the differential to the coupling that mates up to the drop housing is stripped on the inner side dose any one have an extra one or know where I can get one thanks
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BrianC View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote BrianC Quote  Post ReplyReply Direct Link To This Post Posted: 01 Jun 2012 at 12:55am
Does Simplicity still sell parts for these?
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LNG Luke View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote LNG Luke Quote  Post ReplyReply Direct Link To This Post Posted: 01 Jun 2012 at 1:14am
Don't know I ordered a simplicity parts Manuel to get the part numbers to see if a simplicity dealer can still get them
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Orange Blood View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Orange Blood Quote  Post ReplyReply Direct Link To This Post Posted: 01 Jun 2012 at 5:16am
What I think you are looking for is part number  2168027 which is item 108 on this page.  A little pricey, but still available, maybe direct from Simplicity they will be less, I wouldn't even call AGCO, I bet they will still get them, but charge $500.00 or more for it. 



Edited by Orange Blood - 01 Jun 2012 at 5:21am
Still on the farm:
WC C WD WD45 WD45D D14 3-D17 D17LP D19D D19LP 190XT-D 190XT-LP 720 D21 220 7020 7030 7040 7045 3-7060 N7
In the weeds: 3-U UC 2-G B C 7-WC RC WD-LP WF D-17D D21 210
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Henry se/k! View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Henry se/k! Quote  Post ReplyReply Direct Link To This Post Posted: 01 Jun 2012 at 10:51am
I should have a used one on a salvage tractor. Need to talk on phone while looking at tractor. Will be less than new for sure. If interested call 620 439 5638
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Orange Blood View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Orange Blood Quote  Post ReplyReply Direct Link To This Post Posted: 01 Jun 2012 at 7:40pm
What else do you have on that salvage tractor Henry, I may need some 720 stuff!
Still on the farm:
WC C WD WD45 WD45D D14 3-D17 D17LP D19D D19LP 190XT-D 190XT-LP 720 D21 220 7020 7030 7040 7045 3-7060 N7
In the weeds: 3-U UC 2-G B C 7-WC RC WD-LP WF D-17D D21 210
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LNG Luke View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote LNG Luke Quote  Post ReplyReply Direct Link To This Post Posted: 01 Jun 2012 at 11:24pm
That is the shaft I got one on the way from Dave H in north Carolina thanks again Dave
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