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8050 transmission removal

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youngorange2000 View Drop Down
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Joined: 27 Mar 2019
Location: eastcentral MN
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Post Options Post Options   Thanks (0) Thanks(0)   Quote youngorange2000 Quote  Post ReplyReply Direct Link To This Post Topic: 8050 transmission removal
    Posted: 19 hours 37 minutes ago at 3:10pm
It is time to split the 8050 PD I picked up two years ago needing the reverse gear and idler replaced from prior operator error. I have a heavy duty splitting stand for splitting at the flywheel and wheeling the engine out of the way. I will have to find a way to support the cab unfortunately I don't have access to a overhead hoist. Next I will have to remove the the transmission completely I do have a old manual semi transmission jack that should be able to be modified to bolt to the bottom of the tractor transmission. It's going to be a big job but I did a triple split on my 190 this summer for a power director and pto drive gear replacement. Anyone have any experience or advice for splitting the 8050? I do have a good service book that's about 6" thick unfortunately a factory transmission stand is non existent. Thanks.
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Lynn Marshall View Drop Down
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Joined: 13 Sep 2009
Location: Dana, Iowa
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Lynn Marshall Quote  Post ReplyReply Direct Link To This Post Posted: 18 hours 37 minutes ago at 4:10pm
I always leave the transmission attached to the engine. Roll that whole assembly away from the rear end and then detach the transmission from the engine.
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Sids View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Sids Quote  Post ReplyReply Direct Link To This Post Posted: 18 hours 13 minutes ago at 4:34pm
Yes to the last post. Do the rear split first. Raise and support front of cab, roll the whole works out. Easy to remove transmission then.
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youngorange2000 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote youngorange2000 Quote  Post ReplyReply Direct Link To This Post Posted: 17 hours 42 minutes ago at 5:05pm
What type of stand/cart/jack do you guys use to support the transmission? Thanks
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DrAllis View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 17 hours 28 minutes ago at 5:19pm
The official Allis-Chalmers/OTC front stand was strong enough to handle all that weight. I imagine one would want the front weights left on until the tranny is removed from the engine. I had the OTC stands and I had a home made set. My homemade tranny stand would take the tranny out without having to remove or even touch one line to the hydraulic pumps. I doubt your truck jack would be able to do that.
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NEVER green View Drop Down
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Joined: 28 Feb 2013
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Post Options Post Options   Thanks (0) Thanks(0)   Quote NEVER green Quote  Post ReplyReply Direct Link To This Post Posted: 17 hours 18 minutes ago at 5:29pm
   I welded heavy wheels to scaffolding screw jacks, slid heavy pipe over them then welded on flat mounting plates and bracing.

   Used it to wheel both engine and tranny out together.
2-8050 1-7080 6080 D-19 modelE & A 7040   R50       
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Sids View Drop Down
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Joined: 16 Feb 2025
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Sids Quote  Post ReplyReply Direct Link To This Post Posted: 16 hours 56 minutes ago at 5:51pm
Remove front weights first. Sp1litting stands on engine side frames far to the rear. Use a floor. Jack from the front to help support the transmission when you roll it apart. When you remove transmission from engine remove one 7/8 bolt from each side and put in a long 7/8 bolt with head cut off before you take out other bolts. My splitting stands are simply a 1x4 flat iron, pipe welded to side at bottom end 1 inch all thread and wheel. Easily raised up or down. Then an iron forward to another hole in frame. You can lift and support cab front with a pipe flat plate on top with a hole, all thread with channel or angle on top easy to raise up or down. Make sure range transmission is in park. Put a little jack stand under drawbar at rear, jack and blocks under front of rear main housing.drain oil before split. Not during split, makes a mess.
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Leon B MO View Drop Down
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Joined: 12 Sep 2009
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Leon B MO Quote  Post ReplyReply Direct Link To This Post Posted: 16 hours 54 minutes ago at 5:53pm
I have a set of AC cab jacks. They are pretty easy to duplicate. Some 1"pipe and 3/4 all thread would work. Also made a set of splitting jacks, rear end, middle and side that are almost identical to AC's. I did my 7060 pd several years ago. It is a heavy chunk to deal with, respect it until it's in a safe place. Also, a nice tool to have is the bracket to remove clutchpack from trans.
Leon B MO


Edited by Leon B MO - 16 hours 53 minutes ago at 5:54pm
Uncle always said "Fill the back of the shovel and the front will take care of itself".
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SteveM C/IL View Drop Down
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Joined: 12 Sep 2009
Location: Shelbyville IL
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Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveM C/IL Quote  Post ReplyReply Direct Link To This Post Posted: 12 hours 29 minutes ago at 10:18pm
My 8070 was already split at flywheel when I decided to go through PD. Don't remember how i held onto PD clutch out or in but that sucker is HEAVY! That's when i found the trashed front bearing behind PD. Ton of metal at suction screen so I decided to replace all brgs so no upcoming failures. Pulled trans with a truck jack and some creative brackets for support. It ain't flat or symetrical anywhere on bottom. Do your due diligence when shimming the bearing behind PD.  Do yourself a favor and move wheels out before starting to give room to work. Long story short...I did It ,so can you.


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