Thread Take-Up Driving Lever Final Assembly - Brother PR655 Service Manual

Main unit
7

Thread take-up driving lever final assembly

1. Attach the roller 2 to the thread take-up differential lever 1, and tighten
the thread take-up roller pin 3.
2. Attach the spacer 4 to the thread take-up differential lever 1, and
temporarily tighten the screw 1.
3. Attach the roller shaft assembly 8 to the thread take-up driving lever 9
with the nut (1, M5) 0 and the spring washer (2-5) A.
4. Apply MOLYKOTE EM-30L to the shaft hole 5 on the thread take-up
bearing.
5. Thread the thread take-up lever assembly's shaft 6 through the hole on the
thread take-up bearing, attach the thread take-up differential lever
assembly to the tip of the thread take-up driving lever assembly's shaft, and
temporarily tighten the screw 1.
*Key point
• Temporarily tighten the screw 1 first. Firmly tighten it after
completing thread take-up differential lever height adjustment
in 3 - 58 "Needle bar case final assembly attachment".
6. Apply MOLYKOTE EM-30L to the thread take-up differential lever's
roller 7.
Apply MOLYKOTE EM-30L to the shaft hole on the
thread take-up bearing.
Apply MOLYKOTE EM-30L to the thread take-up
differential lever's roller.
Tightening torque of thread take-up roller pin:
1
Upper shaft unit
Size of a grain of
Size of a grain of
0.78 - 1.18 N-m
Bolt, Socket
Hand start
M5X12
3 - 41
3
rice
rice
6
7
Torque
2 1
1 4
9 8
0 A
5
1