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I am looking for a service manual for a Pfaff expression 2034. I need specifications for the bobbin carrier and the needle to shuttle hook clearance / sequencing. It's NOT a Tiptronic 2040.
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PFAFF expression 2034 Instruction Manual
(this is for a 2034 but is probably close enough to your machine to be useful. Usually, there is a very slight different between models, that most often just entails a few extra features or decorative stitches.)
Hm, difficult to diagnose. Usually, when my machine makes a clicking noise, it is the needle striking something. Since that isn't the case with your machine, can only assume it is something else. Sometimes machines will make additional noises when they need some oiling, but that would be determined by the make/model of your machine. Could be the bobbin mechanism clicking. Most sewing machines do need periodic sewing machine oil placed in the shuttle/hook area (use only fresh, good quality sewing machine oil--one or two drops only). Older Pfaff machines are usually well-loved, so it could be something is loose or out of place on yours.
The shuttle hook is suppose to hook the needle (spool) thread and loops it around the bobbin case to form the lock stitch. Is it possible that something was adjusted without proper clearances as to allow the thread looping around the bobbin case to do so without catching up where it should pass through freely? ~<Ray>~
Have you changed your needle? If so do a visual check on the bobbin case area.
-With the bobbin door open, so you can see the bobbin case, turn the hand wheel towards you and you should see the needle come down and the top thread catch and loop around the bobbin thread and pull both to the top.
-If if is not, it is going to be your hook to needle timing or clearance.
When the needle is on the up movement, the hook should pass right above the eye of the needle.
I have a Pfaff Expression and the bobbin casing does not come out so I can clean out behind there. Usually in my other machines there are 2 little levers that turn and then you can pull the whole bobbin shuttle out
Rule of thumb.. Loops on the bottom, problem on the top. Loops on the top, problems on the bottom.
Set your upper tension at 4, and rethread the machine from the top. Just before you thread the needle, but the presser foot down. If the thread pulls right thru easily, then the thread is not thru the tension wheel right. Because, if you can't pull the thread thru with the presser foot down, you have it threaded right.
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