Brother GT-3 Series Service Manual page 216

5.
Remove the eight Capping Tubes (10) from the Y-shaped Tube Joints (9).
Remove the Capping Tube (10) by pushing down the Plunger Head (7) by hand.
(10)
6.
Remove the Capping Tube (12) by pulling out the Cap Rubber Holder (11).
(9)
(7)
Solenoid
(11)
(12)
(13)
GT-3 Series
6. Replacing Parts
(9)
207