Presser Lifter Mechanism (3) - Brother HE-800A Service Manual

3-11. Presser lifter mechanism (3)

4128Q
4218Q
1. Insert the two linear ball bearings (1) into the guide bracket (2).
2. Provisionally install the bearing holder (3) with the bolt (4).
3. Pass the two guide shafts (5) through the motor bracket assembly (6) and the guide bracket (2), and then
tighten the four set screws (7).
4. Provisionally install the presser driving arm (8) to the guide bracket (2) with the four bolts (9).
5. Securely tighten the bolt (4).
6. Insert the washer (11) into the driving arm presser (10), and then pass it through the presser driving arm (8) and
insert into the motor bracket assembly (6). Provisionally tighten the set screw (12).
7. Tighten the four bolts (9) and the set screw (12) so that the presser driving arm (8) moves up and down easily
and so that there is no play in the gear.
8. Insert the motor bracket assembly (6) into the arm from the top.
9. Position the motor bracket assembly (6) using the two positioning pins (13), and then install it by tightening the
four screws (14) and the screw (15).
10.Install the clamp sensor plate (16) with the flat screw (17).
11.Install the clamp sensor (18) with the screw (19).
12.Install the clamp sensor dog (20) to the upper thread trimmer driving link (22) with the two screws (21).
Apply grease to (10)
HE-800A
3. ASSEMBLY
Apply grease
4219Q
4124Q
59