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Push rod question

T

Tom Fleming

Well-known Member
What's everyone's favorite way to straighten bent push rods? I just cleaned up the ones out of the F30, and 5 of them are slightly to OMG bent.

In the past, I always would replace a bent push rod with a new one. In this case, I think I will need to straighten them.

In this arena, I am definately a rookie.

thoughts, experience or suggestions are welcomed here. I was thinking large anvil, and an 18" machinist's ruler I have as a straight edge. Was also going to work them cold, but once again, this will be my first time attempting to straighten any..................
 
You definetly don't wanna put a crease in them trying to straighten them. In the past I've put rag in a vice and very very slowly bent a couple back straight. I feel like there's a better way thats skipping my mind at the moment
 
I think the push rods are made out of a hollow tube with solid ends welded on. I would try Tyler's method of hand straightening them. You could try carefully hammering them straight against a flat steel surface.
 
Go with Dwayne, he will get you some nice used ones
with no stress of messing the old ones up, or
weakening them. BTW, the originals for the 10-20/F30
are forged.
 
Was told by an old fellow that has fixed a little bit of everything not to try to straighten a pushrod he said it will bend again at the same spot
 
Tom, It is a judgement call, I have been in alot of F series motors and seen some bent rods.
some not to bad I tapped straight and let then go. Other I know were beyond repair and I got replacements. If you think it will work than use it. If you think it to bad than don't. If Dwayne has some mabe the cost will be so little you will gotem. I alway try to keep the cost down on all my tractor redo's and I no you have a big project on that F-30. oldiron20
 
Tom, Get a hold of Nebraska Cowmanm he deals almost exclusively in the F series Farmalls and knows more than most about them. Get 5 from him now, so you will not have to open up that engine in a most inopportune time or place. I am sure it will not cost much to buy and ship. Hope this helps.
Later,
John A.
 
Never straightened any push rods, but with other things, I have used a small hand press (Dake) and a pair of V blocks... has anyone straightened push rods this way? With other things, I'd go slow and roll them on a flat table to check.
 
Use a wooden block on the end grain and tap with a plastic hammer such that high spots are removed.
Roll them on a flat surface. They bend from stuck valves, or hard things in the combustion chamber like metal or ice. They can be easily made usable. If they are bent enough to cause surface fracturing or stress marks, they are toast. I have used pushrods in car engines (When they were my own and I had no money), that were welded back together after snapping in two. They were subjected to radically more running stress than your engine will ever encounter. Jim
 
thanks for the feedback guys. I am going to try to straighten the ones that aren't too bad.

Dwayne, can we get hooked up offline and work something out. my email is [email protected]

Nebraska Kirk, OMG, I totally forgot about you. You'll be getting a package soon. my bad, as I totally forgot.
 
Dwayne, I found one of our old emails. I just sent you a note. I didn't connect the dots until I thought about it, but with edit disabled, it was too late...... :oops:
 
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