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190 2 pinion vs 190 4 pinion 200 rear end

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brad durst View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote brad durst Quote  Post ReplyReply Direct Link To This Post Topic: 190 2 pinion vs 190 4 pinion 200 rear end
    Posted: 27 Mar 2020 at 10:00am
what 190's have a 4 pinion rear end? and will they inter change with a 2 pinion. i do know that you can not take a 4 pinion out of a 200 and put it in a early 190. so is the later 190xt series 3 use the same 4 pinion as the 200 or is it different 
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DougG View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote DougG Quote  Post ReplyReply Direct Link To This Post Posted: 27 Mar 2020 at 6:16pm
Pretty sure the XT 3 and 200 are the same , the 2 was in 67 and earlier models with the small axles,, 
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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: 27 Mar 2020 at 7:05pm
Small 2 3/4" axles (prior to s/n 9001) were all 2-pinion from the factory and even after the driveline update kit. All other 190's and 190XT's from s/n 9001 up to 23000 were still 2-pinion differentials and had the larger 3 1/4" axles. At s/n 23001 ( series 3) the 4-pinion differential was introduced, which was December of 1968, so just say from 1969 onward they were all 4-pinion diffs. So, by that time, there were enough 2-pinion tractors that had failed, they were getting repaired with 4-pinion kits which required a new ring and pinion because the ring gear I.D. was milled out larger than a 2-pinion ring gear. A 200 and 7000 differential is essentially the same as any 190XT 4-pinion diff. I would guess there could be as many as 50% of the 190XT's that have been repaired to 4-pinion diffs. If the tractor came from an area where there was moldboard plowing done, it has probably been changed to 4-pinion because the 2-pinion didn't hold up very well.  2-pinions hold up to 1200 HP if the pin is needled/hardened and the backside of the side gears are machined to accept flat roller brgs. EITHER DIFFERENTIAL MUST HAVE THE OIL LEVEL RAISED TO FLOOD THE DIFF TO HAVE ACCEPTABLE LIFE.
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brad durst View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote brad durst Quote  Post ReplyReply Direct Link To This Post Posted: 28 Mar 2020 at 10:01am
ok. so how are peaple  putting the 4 pinion in the older 190's the ring gear assembley out of the 200 will not fit into my older small axle 190 rear end housing. so im using my 200 rear end housing and my small axles. witch that all seems to work fine 
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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: 28 Mar 2020 at 6:45pm
They are either finding the correct "4-pinion" ring gear/ring and pinion set from a 190XT that had a 4-pinion in it, or milling the hole in their 2-pinion ring gear to be able to slide onto the 4-pinion diff case.
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brad durst View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote brad durst Quote  Post ReplyReply Direct Link To This Post Posted: 29 Mar 2020 at 8:02pm
got it. thanks so much 
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Bobo Husker View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Bobo Husker Quote  Post ReplyReply Direct Link To This Post Posted: 04 Apr 2020 at 11:45am
Can anybody verify if the later d19 differential side gears were 23 spline or 25.

Thank you in advance
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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: 04 Apr 2020 at 7:42pm
Same as a 190XT/200 whatever that is.
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Bobo Husker View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Bobo Husker Quote  Post ReplyReply Direct Link To This Post Posted: 04 Apr 2020 at 8:04pm
Ok so should be 25 spline. I looked the part up on a parts house and they said 23 spline so was wondering.
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