Pfaff 545 H3

[Moishe]

Hi Guys I need a help!

my Pfaff 545 stop sewing the hook is spinning and not catching the thread!

Any idea what is wrong with it? 
How to fix it?

[Northmount]

1 hour ago, Moishe said:

my Pfaff 545 stop sewing the hook is spinning and not catching the thread!

Moved your post to Leather Sewing Machines.  More likely to get an answer here.  Can you provide more information to help solve your problem?

Have you checked your needle for damage, is it threaded correctly?  Was it working fine then suddenly quit, any noise, did it jam or lock up?

 

[shoepatcher]

Safety clutch out?

glenn

[Moishe]

On 4/10/2025 at 5:35 PM, Northmount said:

Moved your post to Leather Sewing Machines.  More likely to get an answer here.  Can you provide more information to help solve your problem?

Have you checked your needle for damage, is it threaded correctly?  Was it working fine then suddenly quit, any noise, did it jam or lock up?

 

It was working perfectly! And sadly started no make loops 

[Moishe]

On 4/11/2025 at 4:30 PM, shoepatcher said:

Safety clutch out?

glenn

No everything fine 

[nejcek74]

1) Check first the obvious part as it is written above:

 - is threading right, is thread moving through the needle, check threading through every single part, i.e. tensions disks, check spring assembly etc.

- check the needle, is it bent or damaged

2) is the upper thread going around the hook?

3) check the needle position to hook and hook timing, I suggest using the old adjustment manual for Pfaff 1245 (the successor of 545), needle and hook timing is described in point 5, but I suggest going through everything:

Pfaff 1245 Adjustment 89_09.pdf