1370 powershift update

700KK · Apr 6, 2018

got time to get the powershift apart and yes the bolts holding c2 and 3 did break. I think that I remember reading somewhere about an update that was needed? What all
does this update involve. The tractor has never been split before to our knowledge. Thanks.

1370rod · Apr 7, 2018

You can get the parts for a 2390 that use 1/2 bolts, or drill yours out and install 7/16 bolts or reinstall the 3/8 bolts. If you plan on putting thousands of hrs on the tractor the upgrades would be a good choice. If not the standard 3/8 generally last several thousand hrs also. Rod.

Ron Sa · Apr 9, 2018

I have no experience repairing these trannys but FYI here is some general info about bolts. Also, the cross section shows the bolts in question recessed so you will need a fastener that will recess. We all know that bolts come in various grades.

What grade did Case use at the factory? I don't know. What all grades can we now buy at a dealer or other bolt place? We know the variation is large. Does the current CaseIH dealer (or current counterperson) give a hoot about the 70 series tractor?

I would insist on knowing that the bolt strength was labeled as 170000 strength or greater---weather I oversize or stayed with 3/8. I would consider either an allen head bolt, 12point bolt, or stud and 12point nut. I would use some blue Loctite.

I am guessing the factory may have used grade 5 or maybe purchased bolts from the lowest bidder with poor quality control. I would know for sure I was using grade 8 or 9. Will stop preaching to the choir. LOL

https://www.mcmaster.com/#=1cc716b

1370 powershift update

700KK

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1370rod

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Ron Sa

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