29K help

[Ole South]

Weellll, that didn't work. Three days under pressure and only the clamp gave. The pin didn't even move. I guess I'll have to grind off the end of the roller pivot and punch it out from the needle bar lever end. Or drill it out :\

[Constabulary]

I don´t think constant pressure will help you with the pin. I rave restored a few patchers already and never had bigger issued with this pin. Usually 3-4 hammer strikes will loosen it. The pin clamps in the driving rack arm and not in the casting and the pin is tapered so when you give it some hearty hammer strikes and I´m sure this will work. Have you tried a heat gun or blow torch for either problem? When you drill it out the roller pin and damage the driving rack you will most likely have problems installing a new roller properly.

[RockyAussie]

Like I said if all else fails drill through that pin bit by bit.A tap with a good drift from the back will eventually loosen it.

[Ole South]

Yep Conny, I beat the beejeebers outa that pin (from the back) to the point I was afraid of mushrooming it.  The end started out rounded and now is pretty flat.  Yessir, I've heated it ("it" being the lever pivot area{driving rack arm} not the head casting), torched it, frozen it and doused it with penetrating oil all to no avail.  But the good news is that I got the roller pivot out (my original objective)... I finally just clamped a pair of vice grips on it and gave a hefty heave-ho and lo & behold it broke loose and rotated out.

Then the other shoe fell...

The new roller pivot O.D. is a mic or two larger than the one I removed (~7mm) AND... about 5mm longer.  Now the roller pivot is out I can run a pin punch down the lever hole and there seems to be an obstruction.  It could be just corrosion buildup but if it's the casting then drilling and punching from the hand-wheel side wouldn't have worked probably and my new roller assembly will bottom out before seating.  Does anyone know if that hole is drilled thru and thru?

Aussie I didn't ignore your advice... I just can't get to the backside of the roller pin since removing the needle bar lever has been a no-go.  Btw, this being a 29k-30 I found the driving rack pivot pin is a significantly larger diameter than on my 29-4.

I really need to get this poor orphan sewing. 

Thanks guys for all the advice and help!