John Deere B no reverse

bgpeterson · Sep 9, 2020

Hoping someone can help me figure this one out... My Deere B slowly quit shifting into reverse. We took the transmission apart and removed the flywheel side. It really seems like the reverse gear is very slightly too big to slide onto the drive gear. All the shafts feel tight so I dont think any bearings are out but dont understand why the gear teeth would now be hitting the drive gear. Thanks for any comments!

steve_in_mo · Sep 9, 2020

Broken shifter fork?

bgpeterson · Sep 9, 2020

(quoted from post at 15:03:59 09/09/20) Broken shifter fork?

The shifting fork seems to work but when the reverse gear meets the drive gear, the sprocket teeth hit slightly preventing them from engaging. It's almost like the reverse gear is too large so it wont slide into place.

flying belgian · Sep 9, 2020

That seams strange. Only thing I can think is there must be a bearing out. Maybe look and feel again.

MSD · Sep 9, 2020

Bearing out or bad on the differential allowing it to drop down some??

steve_in_mo · Sep 9, 2020

Then I'd agree with the others. A bad bearing would let the reverse gear get out of place.

bgpeterson · Sep 9, 2020

(quoted from post at 16:36:44 09/09/20) Bearing out or bad on the differential allowing it to drop down some??

When i grab the differential gear through the transmission top under the steering post, everything feels tight. If a bearing was going out, wouldnt I be able to move something with a pry bar? Thanks again for the help!

Janicholson · Sep 9, 2020

Shaft bearings (ends) can let the gears get closer. Use a real pry bar to budge the shafts (carefully) on each end to find the loose bearing. It is
not a hand movable type of motion. Jim

Steve@Advance · Sep 9, 2020

Try lifting one rear wheel off the ground to be sure there is nothing under load.

Turn the wheel while watching what is happening, pull the plugs and turn the engine too.

bgpeterson · Sep 11, 2020

I ended up putting the tractor back together again because I needed to use it for some projects. At first, it acted the same and didnt want to go into reverse but after a little persuasion, it decided to go into reverse gear. I did a few projects and now it seems to slide into reverse again quite easily. Does this seem to imply that I have a bearing just slightly out? I'm thinking there may be just enough slop in the bearing that reverse occasionally binds but then it comes back into alignment and then works? Thanks again!

mark1955 · Sep 11, 2020

I have seen the shifting dogs, wear down to a point, they wont shift right, on certain gears. mark55

John Deere B no reverse

bgpeterson

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steve_in_mo

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flying belgian

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