Rivets in rear end diff Hello Soundguy

[Devious]

Hi I have cranked/strated my 400 buck 8n/9n tractor and have found the problem the PO had that caused him to park it forever. I removed the left rear axle and trumpet to find the rivets to the ring gear ect laying in the bottom of the housing just where I expected them to be. I had not gotten any action from the trans to the rear wheels with the engine running and the rear off the ground All the gears worked and the PTO worked and the lift worked but not the axles.
The question I have is there a way for me to make this repair of replacing the rivets with bolts or rivets or does this reqire a machine shop to do this or should I take the differential out of my parts tractor and put it in instead. The parts tractor is sitting right beside it with the wheels off. This is a 9n/8n tractor and if I read the FO-4 right the diff will go OK in all three Ns. I m sure lots of folks have done this before but I have not. Standing by. Devious

 

[Dan 2N]

If it were my tractor, I would bolt it together with grade 5 bolts. Here is a link to a rivet supplier if you choose to go that way for repair. With the left axle off the gear set will come right out, its heavy though

Dan 2N
Rivets

 

[Barry OH]

New holland has the replacement bolts made to replace the rivets
But they will cost $

 

[Devious]

Thanks Dan I was thinking grade 3 but maybe I am thinking too soft. I recieved one email from a nice fellow who said NH had them for 240 for twelve bolts. I think I can do better here in Houston by shopping around at the Nut and Bolt stores for the oil industries. Yeah its a little heavy for my old 72 yr old arms but I got ur done and out and every thing pressure washed and ready for parts to go back in. More of this saga to come I ll bet Devious

 

[ZANE]

Use grade 8 bolts and nuts and use fine thread.

Grade 5 and course thread won't do it.

Zane

 

[Devious]

Hi Zane Do you think 8s will shear if need be or am I thinking that Grade 8s are harder than tney really are.? Devious

 

[KCM]

The New Holland bolts have special shaped heads to prevent them from rotating when tightening and also from hitting other parts of the tractor. If you use standard hex bolts, you will likely need to do some bolt modifications to get them to work.

Don"t know why New Holland thinks they need to charge so much for them.

 

[BillM (OH)]

Cause they want you to give up and buy a new tractor!!!

 

[Bob]

There's NO need for the bolts to EVER shear!

Put Grade 8's in it and be done with it!

 

[Pete in OH]

I had the same problem a few years back. I used grade 8 bolts and nuts...cost less than $30 for parts
Older post with pics

 

[wwildhorse2k]

Use the grade 8 bolts and nuts and hardened washers. The grade 8's are about 30% stronger than the grade 5 and will stand up for another 60 years. for extra measure if you want to -- get the correct length so that the threads are outside of the shear plane. Make sure that the surfaces are smooth and burr free.

-- my $0.02

- Mark