Quote:
Originally Posted by EternalArianne
So I noticed the 102 I got was missing one of the grease zerks on the front axel. Well, missing was an understatement, it was more like broken off with a small portion of it still threaded inside the hole. I ended up disconnecting the steering rod and removing the entire left side wheel portion and tapping it out through the hole, which destroyed the threads. And I tell ya, rethreading cast iron sucks ass we ended up using a threading bit attached to a drill with some oil squirt. Now it has a new zerk and I can grease the axel. 2/10 not recommended lol
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As stated above the original grease fittings are just a press in type, when broken off you can just punch it the rest of the way through, then drill and tap for 1/4-28.
Cast iron is self lubricating and requires no cutting oil or coolant.
I think your biggest problem is that you didn't drill out to the tapping size before tapping, which means you tap is trying to bore and thread a hole at the same time. A job for which it was not designed.