Case 1490 reuse self locking nuts, connecting rods.

[Henrik Jansson]

Can I reuse the self locking nuts for the connecting rods?
New ones are VERY expensive.

Would it be a good Idea to press the locking parts down on both sides before reuse so that they would lock better then they are reinstalled?

 

[rustred]

if it was me and in dought i would be replacing nuts. cheaper than a hole in the block. lots of times like a nylock they are a one time deal. how much can the nuts cost??

 

[Eagle Doc]

How about Loctite?

 

[RGMartin]

I have rebuilt a more than a few DBs. I have always reused them as is.

Only ever had one with a hole the block that I could attribute to a loose nut, and I'm fairly certain it was because the bolt wasn't oriented correctly in the hole in the rod when it was torqued(I wasn't the rebuilder). It scattered within a couple hours hours once the bolt managed to seat itself, allowing the nut to be several turns loose.

 

[kevinthefixer]

(quoted from post at 16:31:53 03/26/18) How about Loctite?

oktite is great stuff. Until it gets hot. Dunno exactly how hot it has to get to stop working, but I wouldn't trust it in a hot oil bath. Or shower.

 

[Henrik Jansson]

The nuts cost about 30 dollar each. 8X30= 240.

 

[WGM]

What does your genuine Case shop manual say? That's where you need to go for your answer.

 

[Henrik Jansson]

The shop manaul says new nuts. But shop manuals are used to say so about alot of things.
New nuts will cost about 240 dollar.
And as I know almost no one uses new nuts.

 

[ss55]

If you deform the connecting rod nuts to grip threads tighter, would that change the tightening torque required to get the proper stretch on the bolts/studs?

 

[1370rod]

I would not alter the locking nuts, just clean everything properly and install lock-tite as directed and you will have no problems. Rod.

 

[Henrik Jansson]

What kind of loctite should I use?
Have you used loctite on connecting rods?

And if I clean them, and install them without using oil, will that affect what torque moment I should use?

 

[rustred]

use the blue loctite, as its the removable type. the red stuff is pretty much permanent and may require heat when loosening on next o/h. also it means you be be replacing rod bolts and nuts next time!! yes have clean dry threads. torque to normal spec. go blue for sure!

 

[rustred]

ooh, and the 243 is oil tolerant! 242 is regular stuff.

 

[kevinthefixer]

(quoted from post at 08:37:10 03/27/18) ooh, and the 243 is oil tolerant! 242 is regular stuff.

h, good to know!