Brother GT-3 Series Service Manual page 141

6. Replacing Parts
4.
Shift the R Pulley ASSY (5) along with the groove (4).
(5)
5.
Remove the Reduction Belt (6) from the R Pulley ASSY (5).
Assembling
1.
Hook the Reduction Belt (6) on the R Pulley ASSY (5) and put it through the groove (4).
(6)
(5)
2.
Assemble the two Ball Bearings Radial 688ZZ and the two new Retaining Rings E6.
Prepare the new Retaining Rings, no reuse.
3.
Hook the Reduction Belt on the Motor Pulley. Adjust the tension of the Reduction Belt.
(Refer to "6-1-5. Adjusting the tension of Platen Belt and Reduction Belt".)
132
(6)
(4)
(4)
(6)
(5)
(5)
(4)
GT-3 Series
(4)
(6)