Pfaff 145 h4 and New Tech servo motor

[Uwe]

It might be harder to figure out what needle system the machine was adjusted for than to revert the meachine back to the original System 190 setting.

To convert the machine back to System 190: insert a System 190 needle and adjust the needle bar height to bring the eye of the System 190 needle into the exact same position as the old needle. Done.

One way to do this in a practical manner is:

1. Rotate the hand wheel until the eye of the current needle is exactly level with the throat plate. 

2. Mark the position of the hand wheel with a method of your choice. It just needs to be repeatable with precision. ( tape a paper arrow on the machine pointing at the hand wheel and then mark a sharpie dot on the hand wheel)

3. Loosen the needle bar clamping screw(s) to move the needle bar up a little and insert the System 190 Needle. 

4. Adjust the needle bar height to line up the eye of the needle with the throat plate at the exact same hand wheel position you marked earlier. Tighten the needle bar clamping screw again.

The machine should now sew just as it did before, but now with the proper  System 190 needle.

At least that is how it plays out in my head while typing this in my hotel room.

 

 

[Pammy]

HI, I am cleaning and oiling a Pfaff 145 that hasn't been used in over 20 years, hoping it will work.   The instruction manual shows where to oil the machine, but it does not show where to oil the motor.  Does the motor need oil?  Thank you for your advice! 

[fibersport]

What kind of motor does it have?  Clutch motors 'MIGHT" be able to be lubricated, servo motors most likely not.  Does it run smoothly and quietly?  Again, some info on it might help.

[Pammy]

I believe it is a clutch motor.  I've plugged it in and it's quiet, but have not tested stitching yet as I need to oil the parts on the machine.  It is a 145 -H4, using system 190 needles.  

[fibersport]

Scroll up about 8 posts and read the post by Uwe, he talks about starting up a machine that has been sitting.  If you can post a couple of pictures it might help others to understand what you have which might bring more suggestions.

[Pammy]

Thank you.  I got it working and have oiled the machine.  It seemed OK until I got sewing.  The tension was off - the top thread was too loose.  I discovered that the screw that tightens up the spring is missing.  Would you know where to buy one or what I can to do replicate it?  (Picture attached).   Many thanks.  !!!

[AlZilla]

3 hours ago, Pammy said:

Thank you.  I got it working and have oiled the machine.  It seemed OK until I got sewing.  The tension was off - the top thread was too loose.  I discovered that the screw that tightens up the spring is missing.  Would you know where to buy one or what I can to do replicate it?  (Picture attached).   Many thanks.  !!!

Any kind of nut that will thread on there should do the trick. The OE part is probably a thumb screw but anything you can run on there, I'd expect to function fine.  A washer between the spring and nut would be a good idea.

Edited November 28, 2023 by AlZilla

[CowboyBob]

3 hours ago, Pammy said:

Thank you.  I got it working and have oiled the machine.  It seemed OK until I got sewing.  The tension was off - the top thread was too loose.  I discovered that the screw that tightens up the spring is missing.  Would you know where to buy one or what I can to do replicate it?  (Picture attached).   Many thanks.  !!!

We stock this nut,you could borrow the one off the bobbin winder to try the machine & if you need anymore more parts,needles or thread order it all @ once.

[Pink1977]

On 9/27/2017 at 11:31 AM, Uwe said:

It might be harder to figure out what needle system the machine was adjusted for than to revert the meachine back to the original System 190 setting.

To convert the machine back to System 190: insert a System 190 needle and adjust the needle bar height to bring the eye of the System 190 needle into the exact same position as the old needle. Done.

One way to do this in a practical manner is:

1. Rotate the hand wheel until the eye of the current needle is exactly level with the throat plate. 

2. Mark the position of the hand wheel with a method of your choice. It just needs to be repeatable with precision. ( tape a paper arrow on the machine pointing at the hand wheel and then mark a sharpie dot on the hand wheel)

3. Loosen the needle bar clamping screw(s) to move the needle bar up a little and insert the System 190 Needle. 

4. Adjust the needle bar height to line up the eye of the needle with the throat plate at the exact same hand wheel position you marked earlier. Tighten the needle bar clamping screw again.

The machine should now sew just as it did before, but now with the proper  System 190 needle.

At least that is how it plays out in my head while typing this in my hotel room.

 

 

incredible !! I have saved your explanation and i will on my new 145 too

Because mine is indicated H3 for example but i have 14 mm undercthe foot as a H4

So i understand that it has been modified

It was really really dirty and looks no oil for a long time 

So i don t think the adjustments has been done recently 

[shoepatcher]

H4 Pfaff 145,545 normally use the needle system #190 which is longer than the 134-35 system.

glenn