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JD 4020 Rear Wheels

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Bill

04-30-2003 12:23:33




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Can the rear wheel spacing be adjusted on this tractor w/o lifting? If so, what are some tricks to this task? On some other tractors you can loosen the locks and gently run the tire in/out by using appropriate brake.




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Tim

04-30-2003 19:01:44




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 Re: JD 4020 Rear Wheels in reply to Bill, 04-30-2003 12:23:33  
Jacking up the wheel is required and there may be more heavy lifing also. The operators manual explains the procedure for changing wheel tread settings. It does however leave out some very necessary "tricks". After loosening the 3 cap bolts on the outside of the hub turn the 2 jack screws in to loosen the wedges to free the hub from the axle. This is usually much easier said than done. The trick that worked for me is to have one person lean on the wrench turning in the jack screws while another hits the end of the axle with a sledge. The vibration should shake the wedges loose allowing the jack screws to turn on in, they'll have to go almost flush with the hub. After it's loose the pinion (single hex head pointing toward the tire from the hub) can be turned to move the wheel in or out on the axle (the rack (series of grooves) should be on top of the axle when you're moving the wheel). As long as everything is free it's a pretty easy thing to change the spacing; it can be quite difficult to get some of the parts freed up. If you have a WFE be prepared for some more struggles with the enemy rust. Penetrating oil, long cheater on the wrench, etc. will help. I'm sure there are other methods that can be posted.

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Dean Barker

05-01-2003 23:44:48




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 Re: Re: JD 4020 Rear Wheels in reply to Tim, 04-30-2003 19:01:44  
Just an idea; instead of beating on the ends of the axles, which tends to bugger up the axle ends and may damage the axle bearings, take some heavy wall tubing with the ID slightly larger than the axle, cut it longer than the axle and weld a heavy plate on the end. Then cut half of the tubing away back from the end about one half inch. Position the protruding half of the tube against the movable wedge and beat on the tube-plate assembly to drive the wedge in. Proceed with the previous directions. This really worked on my 4320 to adjust the wheels.

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Bill

04-30-2003 20:57:06




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 Re: Re: JD 4020 Rear Wheels in reply to Tim, 04-30-2003 19:01:44  
Thanks, Tim, for the information. I really appreciate the quick reply.



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