Removing Broken Set Screw And Dust Screen Screws
 

Well now that I no longer have a motor for my 122 its time to turn my attention back to the 147.

One of the set screws in the front pulley broke. How exactly should I go about getting it out? Would a normal screw extractor work? The PTO part of the pulley is in the way, I'm not exactly sure how to get around that.

Also, the four screws holding the dust screen are frozen in there. I tried a good soak with PB Blaster and still no luck. Would heating them with a torch be a bad idea?

Can you get to the set screw with a left hand drill bit? Also, I don't think heat would hurt.

Try a 50/50 mix of actetone and ATF (not synthetic!) Soak it with that and maybe a little heat. Make darn sure you let the actetone evaporate off before using heat.. This works better than PB blaster or anything else for frozen screws..

If it is the front pto we are talking about on a NF, then I would remove the hood, disconnect the + batterycable, remove the VR [ just the 2 mount bolts and rest on motor] and the wire harness hold. Take off the front cast iron front grill and get in there and work. :RTFM:

I'm not sure if I would be able to find that small of a bit long enough to reach that far as the PTO shroud or what ever you want to call it is in the way.

Maybe I'll try that mixture.

And the motor is out of the tractor lol.

You might also want to use a .30 caliber bore brush in a drill and clean out the threads before trying to back the set screw all the way out.

The head of the set screw is sticking about 1/4 out of the hole already, so that wont work.

Jmroy, do you have a picture of this set screw?

I'll take one later.

Push the center button on the PTO and it should turn so the notches in the basket will line up with the set screw holes.

Heating the bolts will only make them twist off easier. Normally, once steel bolts are frozen in aluminum, that's where they stay.