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Differences between 3J and 5J for the D2

Differences between 3J and 5J for the D2

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Oldcarman
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The 5J I'm working on is very early (SN 70) I had purchased later 5J parts books, but needed one that started at SN1 for 5J. I picked up a cheap 3J one thinking that most of the parts would be common that I'm interested in.

So, are final drives, steering clutches and major components common? What did they do to the machine to go from 40" to 50"? I hope I don't sound stupid for asking, but I'm really not very familiar with the different versions and how they got the narrow gauge.
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Sat, May 11, 2019 7:15 AM
STEPHEN
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Just off the top, the final drive cases and some associated parts outboard of the steering clutches are different. Also the transverse spring. I think everything else is the same.
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Sat, May 11, 2019 11:50 AM
neil
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Reply to STEPHEN:
Just off the top, the final drive cases and some associated parts outboard of the steering clutches are different. Also the transverse spring. I think everything else is the same.
As Stephen says, and you can basically state it as anything that gives it width, which pretty much boils down to certain items in the final drive/steering area, along with the main spring. So for example, the final drive pinion shaft is longer (supported with three bearings instead of two), but the clutch hubs, and mechanism are identical. The central transmission case is identical etc. The final drive housing is wider but the final cover is identical, as is the final drive driven gear and shaft. But pretty much everything else is the same. So there's actually not many parts that are wider.
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Sat, May 11, 2019 6:52 PM
STEPHEN
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Reply to neil:
As Stephen says, and you can basically state it as anything that gives it width, which pretty much boils down to certain items in the final drive/steering area, along with the main spring. So for example, the final drive pinion shaft is longer (supported with three bearings instead of two), but the clutch hubs, and mechanism are identical. The central transmission case is identical etc. The final drive housing is wider but the final cover is identical, as is the final drive driven gear and shaft. But pretty much everything else is the same. So there's actually not many parts that are wider.
The pivot shaft, forgot about the pivot shaft, it's longer also.
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Sat, May 11, 2019 10:07 PM
Oldcarman
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Reply to STEPHEN:
The pivot shaft, forgot about the pivot shaft, it's longer also.
Thanks guys. Helpful people here are a motivator for people to join the club, which I did yesterday. I enjoy forums where the dialog is helpful to people. As many of us know, there are plenty of forums on various topics where a few people banter back and forth and try to degrade each other. Those sites are easy for me to ignore.

I look forward to getting my first ACMOC magazine.
Greg
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Sun, May 12, 2019 12:14 AM
Mike Meyer
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Reply to Oldcarman:
Thanks guys. Helpful people here are a motivator for people to join the club, which I did yesterday. I enjoy forums where the dialog is helpful to people. As many of us know, there are plenty of forums on various topics where a few people banter back and forth and try to degrade each other. Those sites are easy for me to ignore.

I look forward to getting my first ACMOC magazine.
Greg
Well done Greg, thanks for helping to support the Club, good luck with your 5J restoration.
Mike
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Sun, May 12, 2019 7:28 AM
neil
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Reply to Mike Meyer:
Well done Greg, thanks for helping to support the Club, good luck with your 5J restoration.
Mike
The pivot shaft! I'm glad the boss didn't send me out on the job to convert a 3J to a 5J - I would have forgotten a key part, which is the story of my life. Every job around the house requires 3 trips minimum to the hardware store : )

By the way Greg, did they tell you that membership requires mandatory posting of photos, progress reports, and a detailed youtube of the first start-up : )
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Sun, May 12, 2019 8:32 AM
Sasquatch
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Reply to neil:
The pivot shaft! I'm glad the boss didn't send me out on the job to convert a 3J to a 5J - I would have forgotten a key part, which is the story of my life. Every job around the house requires 3 trips minimum to the hardware store : )

By the way Greg, did they tell you that membership requires mandatory posting of photos, progress reports, and a detailed youtube of the first start-up : )
Welcome to the club, Greg. 👍 It was good getting to meet you at LeSueur, always nice to be able to put a face to a name. And to second Neil's comment, pictures, pictures, pictures, and video doesn't hurt either lol.
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Sun, May 12, 2019 9:45 AM
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