Farmall Cub Forum -- Questions and answers to all of your Cub related issues.
Moderator: Team Cub
Notice: For sale and wanted posts are not allowed in this forum. Please use our free classifieds
or one of our site sponsors for your tractor and parts needs.
I put in a new differential seal tonight. I was going to torque the retainer bolts b/c I had loosened them. The bolts just kept tightening and I had the wrench set for 45 lbs.
I felt one bolt go and was able to get it back out. Is there anything special about the bolts? Grade 5? Maybe I need to get a smaller torque wrench.
- Posts: 12
- Joined: Sun Nov 25, 2012 3:38 pm
- Location: Zillah, Washington
- Zip Code: 98953
- Tractors Owned: 1953 Farmall Cub
Not the first person here recently that's stripped bolts. IH had torque specs that were, in my opinion, a little on the aggressive side. 45 ft-lbs on a 3/8 bolt is really pushing the limits. I back them down to the GM standard for a 3/8 grade 8 bolt and torque them at 40 ft-lbs. The little bit of clamp that you lose won't hurt anything but the time you save repairing threads is worth it.
As far as the original question - if you are buying replacement bolts - grade 8 is the way to go.
Yes - would be a good idea to get a reference check on your torque wrench - you may just be reading the vernier incorrectly and have the wrench at 55 instead of 45.....
- Cub Star!!
- Posts: 339
- Joined: Tue Apr 17, 2012 7:55 pm
- Location: Indiana
- Zip Code: 47119
- Skype Name: ntrenn
- Tractors Owned: 63 Cub 221833 in family since '69
65 Lo-boy 19648 with an un-stuck #4 - it lives!!!
144 Cultivators with disc hillers
59L mower mounted on the Fcub
23A Disc - lost possession
Return to Farmall Cub
Who is online
Users browsing this forum: cub.bub, danovercash, staninlowerAL and 6 guests