John Deere 70 gas flywheel bolts? Torque?

andy r · Sep 30, 2019

I needed to replace the flywheel starter ring gear on my John Deere 70 gas. Should the two flywheel bolts be replaced? Grade 5 or grade 8? Some say that grade 8 may allow for to much pressure and the flywheel could break. Also, what are the torque values for the flywheel bolts? Thank you.

rustred · Sep 30, 2019

its not necessary to replace bolts unless the threads are damaged. I would use grade 8 if replacing. what size bolts are they , 3/4 " or bigger??

MSD · Sep 30, 2019

Make them as tight as you can and then a little more usually does it. Use the old ones over unless they are damaged. Put a new flywheel o-ring in while you have the flywheel off too. Might not hurt to look at the spacer also.

old popper · Oct 1, 2019

Mr Thinker's Almanac says torque value on flywheel bolts is 275 ft lbs.

Pete in MD · Oct 1, 2019

The gas 70 flywheel bolts should be torqued to 275 ft.lbs.

buickanddeere · Oct 1, 2019

(quoted from post at 23:14:27 09/30/19) I needed to replace the flywheel starter ring gear on my John Deere 70 gas. Should the two flywheel bolts be replaced? Grade 5 or grade 8? Some say that grade 8 may allow for to much pressure and the flywheel could break. Also, what are the torque values for the flywheel bolts? Thank you.

Clean dry splines . Clean with alcohol or similar . New grade 5 or 8 bolts . Iirc factory was 208lb ft and 275 is absolute max.

John Deere 70 gas flywheel bolts? Torque?

andy r

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rustred

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MSD

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old popper

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Pete in MD

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buickanddeere

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