Singer 2802 Service Manual page 43

Service Manual
Removal:
1. Remove the free arm extension table, all covers, the front head end assembly, the
buttonhole assembly, the take-up lever assembly, cam stack and hand wheel.
2. Loosen set screw (E) sufficently to clear vertical shaft bevel gear
(A).
3. Rotate vertical shaft (C) until vertical gear set screw (B) is accessible.
4. Loosen set screw (B) to remove gear (A).
Replacement:
1. Replacement is the same as removal in reverse order.
2. Check for vertical shaft end play and adjust if necessary. (See pages 52-53)
3. Locate gear (A) so the top of the gear hub is even with the top of the vertical shaft (C).
4. Locate arm shaft bevel gear (D) on the arm shaft. (See also "Bevel gear mesh and arm
shaft end play" on pages 54-55)
5. Position arm shaft bevel gear (A) and (D) so that the mark (G) on the gear (D) straddles
the marks (F) on the gear (A).
6. Lightly move bevel gear (D) to the left until it just touches vertical shaft gear (A).
Position reference hole (H) upwards. Position shaft gear screw (E) aligned with this
hole.
7. Tighten bevel gear set screw (E).
8. Rotate the arm shaft (L) slowly several times. Observe the position of the two gears
with relation to each other. The top edges of the gears should be even with each other
(illustration M). If this condition does not exist, it will be necessary to repeat the above
procedure and move the vertical bevel gear (A) up or down in order to achieve the
correct position.
9. Adjust take-up lever and needle bar connecting link lost motion (See pages 58-59),
pendulum timing (See pages 64-63), needle location left-to-right (See pages 68-69)
and needle to hook relationship. (See pages 70-71).
10. Check and adjust, if necessary:
needle bar height. (pages 62-63)
l
left-center-right needle position. (pages 68-69)
l
zig-zag lever bight stops (pages 72-73)
l
presser bar height (pages 76-77)
l
hook timing (pages 80-81)
l
Rev. n .
o
Vertical Shaft Bevel Gear
42
358487-001 Mar./2005