Clean build-up between tension disks
You can also remove the outer parts of the tension assembly to access the disks
themselves – clean the disk with rubbing alcohol or lacquer thinner to remove any
build-up.
To avoid any problems re-assembling the tension control, lay the pieces down on a clean piece of paper or plain
fabric in the order you have removed them. The photo below shows each piece laid down on paper as they were
taken off and their general shape. This will help the reassembly process after cleaning the two large pressure disks.
The only wear part that may eventually require replacement is the check spring. It may start to get a groove in the
area where the thread passes over it. To complete this replacement process, you will need to remove the entire
tension unit from the machine.
It is not accessible by removing the outer components shown above. That process
begins on the next page.
Remove outer components
to clean pressure disks
Groove worn in check spring
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