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Pfaff 330 Sewing Machine - Cleaning and Repair

Wednesday, April 2, 2014
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!

 There was nasty white residue all over the inside of the machine from the old bobbin tire flaking off... glad that thing is in the garbage!

Old vs. new

I put everything back together and it works like a dream!

I had fun testing out what it would do:
-Free-motion quilting-

 -Narrow hemming-

 -Sewing leather (leather needle and sz 69 nylon thread)-

 -Zigzag stitch-

 The extension table buckles down to expose the free arm...

 ... it snaps into place easily...

... and the extra extension table attaches in just a second!  I've never seen anything like it before.


Pfaffie and all it's glory!
5 comments on "Pfaff 330 Sewing Machine - Cleaning and Repair"
  1. nice! I love how oil can fix so much on these old neglected beauties!

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  2. Looks like an awesome machine- great job on the rehab!

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  3. My wife bought a 330 several years ago at an estate sale. the former owner described it as not able to sew in reverse. I put in storage until I hadv completed a few rescue projects. Then I found this page and decided to give it a try.

    After a few misadventures with the hook, I have it sewing nicely. I bought a bobbin tire at Joanns, and after several attempts, got it replaced and working. It's not fun. It's very fussy about positioning while you tighten the screws. Removing and replacing the hand wheel is also an adventure. I removed the motor and cleaned off all the crud. That was easy compared to the bobbin winder.

    As for the previous owner, someone -- presumable the service person who said it couldn't be repaired -- had replaced the bed cover without positioning the finger that keeps the bobbin from rotating. It wouldn't sew at all. After cleaning everything inside and relubing, it sews forward and backward. It also came with a very effective free motion foot.

    I now have a working 30, 130 and 330. I suppose I need a 230. I'm afraid my personal favorite is the 30. It is amazing. A cross between a purring kitten and an army tank.

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  4. I have a very similar 330, blue lines in the white knobs instead of red, and mine didn't have the table extention or the original case - but includes a nice variety of attachments, nice solidly built metal machine.
    I haven't been able to find a manual except at www.sewusa.com & they want $10...
    I think your picture with the innards may encourage me.

    I just had to replace the primary & secondary drive belts (had been equipped at some point with o-ring type belts & they were slipping (probably also need a clean & relube) but I found local readily available replacement belts 'wrinkle belly' v-belts (35th Ave Sew & vac in Phoenix AZ) Primary (motor to idler) belt is 11 1/2 inches marked 1112 and the secondary belt (idler to behind hand wheel) is 15 1/2 inches marked 1512.
    hope this may help someone ;-)
    DM in Phx AZ

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  5. Nice rehab! I just found one of these in an old garage. I am gonna be cleaning it out as well. Thanks for the encouragement set by example!
    Lovely, heavy, useful machine!

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