Stuck Diff Lock Pedal

[supermajor61]

I'm trying to make the Diff Lock work on the Super Major. The pedal is seized solid, a big hammer isn't shifting it.
Now trying to drive out the pins on the Pedal and Collar. Then drive out the shaft with a very big hammer. The problem is that the pins won't shift. Does anybody know if these pins are tapered ? or something other than a plain pin ?

[Brian]

I sympathise as I have exactly the same problem to look forward to when I start on my Super Major.

The pins could be hardened steel roll pins that would need a special drill to drill out. Your local machine shop may be able to help.

Have you tried heating? This may free off the shaft or soaking in a diesel bath for a week or so. PlusGas is a good easing fluid along with you large hammer, rather than WD40.

[benji]

I had this problem to with an other part. you could use carbide tipped drills. They will get the job done without losing there sharpness i a minute

[supermajor61]

Thanks Brian, good to have you back. Have tried the Hitting and the Heating. Now trying Soaking.

If that doesn't work, i'll try the Benji method.

Reckon i'll buy one of those miracle drill that you see on Trade Stands. There is one at the Great Dorset Steam Fair, and they drill through old files. Always reckoned that they had heated the files red hot, and left them to cool, which might soften them. We will see.

[supermajor61]

An update on the stuck Super Major Diff Lock Pedal, it was seized solid.

Took Brian's advice and left it in a bucket of diesel for a month. Then tapped it with a hammer and oiled every few days.
It has now yielded and moves freely

It's back on the tractor now, put it up on the axle stands to test. Can engage the diff lock with just one hand now, and it works, wheels locked together.

Thanks Brian, , hope Super Sue yields to the diesel bucket as well.

Now for a road run, no worry now about having to be towed out by a green and yellow job.

[Dandy Dave]

Yup, A little patients goes a longways. Glad to hear you got it moving. Want to have some real fun with shaft loosening??? I've retrieved more than one old cable type power shovels out of wet and swampy areas. Lots of stuck and rusty shafts to free. Just a glutten for punisment I am. Dandy Dave!

[halloween]

An update on the stuck Super Major Diff Lock Pedal, it was seized solid.

Took Brian's advice and left it in a bucket of diesel for a month. Then tapped it with a hammer and oiled every few days.
It has now yielded and moves freely

It's back on the tractor now, put it up on the axle stands to test. Can engage the diff lock with just one hand now, and it works, wheels locked together.

Thanks Brian, , hope Super Sue yields to the diesel bucket as well.

Now for a road run, no worry now about having to be towed out by a green and yellow job.

Looks like you might need to soak the whole tractor in diesel to get it out of that garage!