Changing from bellows type seals to duo cone

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Mschwartz

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Working on doing my undercarriage swap 9u to D6b. Going well one side done. Problem I have is the sprocket I want to use had bellows type seals with the pressed in anchor pins. Took those out and I am left with 3/8 holes, no threads. New seal ramps are supposed to attach with 1/4 threaded screws. Do I need to helicoil down to 1/4 x28 or did cat supply a threaded bushing to update? Other side had threaded inserts already installed but I did not look that closely as I thought that was maybe normal. Thanks for you help and ideas, Mike

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Thu, Jan 2, 2020 1:20 AM

Old Magnet

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Seems your dealing with something different than the field installation version??
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Thu, Jan 2, 2020 1:54 AM

Mschwartz

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Reply to Old Magnet:

Seems your dealing with something different than the field installation version??

Is the 8m3995 insert what the 4b1323 screws are supposed to thread into? If so I think that is what I am missing. Other sprocket had an insert already installed

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Thu, Jan 2, 2020 2:02 AM

Old Magnet

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Reply to Mschwartz:

Is the 8m3995 insert what the 4b1323 screws are supposed to thread into? If so I think that is what I am missing. Other sprocket had an insert already installed

Yes, I believe you are correct.

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Thu, Jan 2, 2020 2:08 AM

Mschwartz

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Reply to Old Magnet:

Yes, I believe you are correct.

Thanks, I will see if I can locate that or make up three myself. Thanks again

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Thu, Jan 2, 2020 2:15 AM

Rome K/G

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Reply to Mschwartz:

Thanks, I will see if I can locate that or make up three myself. Thanks again

Cat has the 8M3995 insert for $28.67 ea.

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Thu, Jan 2, 2020 4:13 AM

Mschwartz

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Reply to Rome K/G:

Cat has the 8M3995 insert for $28.67 ea.

Friend that is helping me was able to make three up on his lathe while I fought getting all of the roller changed this afternoon. Tracks back on this evening, hope to finish up the project tomorrow afternoon.

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Thu, Jan 2, 2020 11:35 AM

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