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Tension Disassembly:
1.
Using the rounded end needle noise pliers, or other tool available, remove the tension cap
regulator nut. Turn counter clockwise, fig 1
2.
Remove the plastic tension cap, and inspect for any damage. This part should be free of
nicks, or other areas that could snag the thread during sewing. If it is damaged in anyway,
replace, or repair so it is smooth on all back side surfaces, fig 1 arrowed
3.
Remove the tension cap friction washer, shown on previous page, item 65 in the parts
section
4.
Remove the tension releasing pin's holding clip, fig 2 circled, pull straight up on it
th
5.
Using the 5/64
Allen wrench, loosen the setscrew, fig 2 top arrow
6.
Remove the top tension unit from the arm top cover. Note: pay attention to the releasing pin,
as it fits into a little cupped area in the tension adjusting arm, fig 2 bottom arrow
In figure 3 we have the unit laid out in the order of disassembly: left to right
Tension cap regulator nut – plastic cap – friction washer – tension unit
7.
With the tension unit in hand, carefully remove the backside of the
check spring off the stud unit
8.
Then remove the front of the check spring off the pre-pressure adjusting
nut, at the same time being careful not to bend the check spring itself
9.
Before removing the pre-pressure spring adjusting nut, observe its
position on the tension stud. It is important that we place this unit back
on in the same location when putting the unit back together
Figure 4 shows the entire unit disassembled: left to right
Regulator cap nut
Plastic cap
Friction washer
Releasing pin clip
Check spring
Pre-pressure adjusting nut
Pre-pressure spring
Tension releasing pin & washer
Tension disc's (3)
Tension stud
Be sure to lay the parts out in order as shown
Fig 4
3
Fig 1
Fig 2
Fig 3
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