Arm Shaft And Horizontal Bevel Gear - Singer 5400 Series Service Manual

Service Manual

Arm shaft and horizontal bevel gear

Removal:
1-
Remove the free arm extension table, tension assembly dial, the knobs of the zig-zag and needle
position levers, all covers (face plate, rear, bottom bed and front), head end assembly, take-up lever
assembly, camstack and hand wheel.
2- Loosen the arm shaft collar set screws (F) so that the collar can move along the arm shaft.
3- Loosen set screw (B) in bevel gear (A) making sure it is loosened sufficiently to clear the groove in
the horizontal arm shaft.
4- Draw the crank (H) with arm shaft (C) to the left until it clears bevel gear (A).
5- Remove bevel gear (A).
6- Continue to draw arm shaft (C )
7- Remove collar (E) and washer (D).
8- Remove arm shaft (C). Washer (G) will remain on the arm shaft.
Replacement:
1-
Replacement is the same as removal in reverse order. (Refer to "bevel gear mesh and arm shaft
end play" on page 56-57)
2- In order to maintain feed timing align the timing mark on the vertical shaft bevel gear between the
two timing marks on the horizontal bevel gear.
page 56-57)
3- Adjust bevel gear mesh and arm shaft end play, camstack radial play, and make corrections you
believe it's necessary to firmly place the take-up lever assembly and needle bar connecting link. (See
pages 56 to 59 and 17-18)
4- Check and adjust if necessary:
l needle bar height (pages 64-65)
l left-center-right needle position (pages 70-71)
l Zig-zag bight stops positioning (pages 76 to 79)
needle bar height (pages 84-85)
l
l hook timing (pages 88-89)
Rev. n .
o
MAY/00
out of the machine until it
(Refer to "bevel gear mesh and arm shaft end play" on
26
clears collar (E) and washer (D).
P/N 357773-002