Members friquant Posted February 7 Members Report Posted February 7 Is there a secret way to knock the hook loose? I've removed the center screw, but the hook still seems to be stuck. I've even tied parachute cord around one side of the hook and pried up with a long screwdriver. The hook flexes somewhat, but does not budge. Quote
Members fibersport Posted February 7 Members Report Posted February 7 Was the machine running before you started to tear it down? Reason I ask is that when I had my 145, I had it all apart and it didn't need any extra force. I don't remember the order I followed to take it apart though, sorry. Do you have the manuals for the machine? They show all the parts so you can make sure all the screws are out. Quote
Members friquant Posted February 7 Author Members Report Posted February 7 Yes the machine was running before teardown. The user manual on page 14 says to "take out set screw 20 (Fig. 4) and pull the hook up out of the machine." Set screw 20 appears to be the screw at the center of the bowl that is removed in the photo. My guess is that the hook is rusted to its supports. Quote
Members nejcek74 Posted February 7 Members Report Posted February 7 If I remember it right, yes, you just take it out. Put some oil around those 2 round holes, hopefully the oil will slowly penetrate the hook. Otherwise, you can remove the whole assembly from bellow: You remove the two big screws that hold the part 91-018 402-45 and than you can wiggle it to the side. Probably you will have to the release the gears also and after you will need to time the machine. I think I have to do it when I was bringing my Pfaff 142 back to life, it was terribly neglected when I got it. Quote
Members friquant Posted February 7 Author Members Report Posted February 7 I pried (gently I thought) on the hook from the left side, rotating the handwheel in between attempts, and the hook broke. I have now soaked it with penetrating oil (should have done that first!) in hopes to get the remaining part of the hook removed so I can install a new one. Quote
Members friquant Posted February 8 Author Members Report Posted February 8 Got the remains of the hook out! Soaked it for a few hours in penetrating oil, tapped on it a lot with a smaller hammer and a long screwdriver, applied heat from a kitchen butane torch to the center portion, more tapping with the small hammer. Eventually I noticed it was budging a small amount one way then the other from the hammer taps. Quote
Members nejcek74 Posted February 8 Members Report Posted February 8 I hope it will not be too difficult or expensive to find a new hook. Thanks for the follow-up, I am sure someone will find it informative. Quote
Members Wyowally Posted February 8 Members Report Posted February 8 I have found what they call an "embossing mini heat gun" very useful for heating stuck parts without flame involved.... Quote
Members bladegrinder Posted February 8 Members Report Posted February 8 Someone that’s good with a tig welder could fix that for you. Quote
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