5-21. CLOTHING SEWING MACHINE ARM SHAFT AND VERTICAL SHAFT MAINTENANCE - continued.
Installation - continued.
(5) Install shaft shuttle arm assembly (1) into machine head..
Ensure top half of crank rod is installed so the markings line up with the bottom half
(6) Install top half of crank rod (2) and secure with two screws (3)
(7) Slide shaft arm assembly (1) slot on the suspension driver block. Ensure the oil hole in suspension
driver block is up.
(8) Replace shuttle shaft (4) and tighten setscrew (5) Ensure shuttle shaft (4) flats are over setscrew (5).