Pfaff 330 Sewing Machine - Cleaning and Repair

While picking up an old Singer off Craigslist I was given this Pfaff 330 for free because it was all locked up. I gladly took it home to see if I could fix it up.

It reminds me of a fighter jet from WWII. It has a lot of the original paperwork and accessories but it also needed a bunch of TLC.

The old glue that held the fabric on the inside of the case was useless...

... but nothing hot glue and leather patches wouldn't fix!

The cords were changed once upon a time and looked gnarly so I took them off...

...replaced the old grommet being held together by electrical tape...

...attached new wires to terminals...

... and to pedal.

The machine was completely locked up and nothing would move including all the knobs on the exterior. I wouldn't be surprised if someone oiled it with vegetable oil and let it sit for 20-years.

I exposed all the moving parts and dripped some kerosene on all the metal-to-metal joints and let it soak in. Then I added machine oil and let it sit over night. By morning progress was made. The handwheel would turn a little but was still stiff. It took hours to get everything running smooth and the knobs functional!

With the inside of the machine exposed I noticed a few things that needed to be replaced.

I took the handwheel off to replace the lower motor belt that was cracking as well as the disintegrating bobbin winder tire.

The 330 is very rare.. I couldn't find any information on it or any of the right belt sizes! I ordered from several different sellers but all the belts were either too small or too big. I ended up going to my local machine shop where they had stretch belts.. genius!