Chamberlain 3280M-267, Owner'S Manual, Page: 34 / 36

34
Motor Unit Assembly Parts
2
10
8
13
14
15
19
4
5
3
9
16
12
7
18
11
17
1
6
6
7
DN
UP
Brown
Wire
(Down)
Contact
LIMIT SWITCH ASSY.
Grey
Wire
Yellow
Wire
(Up)
Contact Center Limit
Contact
Drive
Gear
KEY PART
NO. NO.
DESCRIPTION
1 41A4371 Belt cap retainer
2 41A4885-5 Gear and sprocket assembly.,
Complete with: Spring washer;
Thrust washer; Retaining ring;
Bearing plate; Roll pins (2);
Drive gear and worm gear;
Helical gear w/retainer and grease
3 41A2817 Drive/worm gear kit w/grease,
Roll pins (2)
4 41B4245 Line cord
5 41A5484-1 End panel w/all labels
6 4A1344 Light socket
7 108D79 Lens
8 30B532 Capacitor – 1/2 hp.
9 12A373 Capacitor bracket
10 41A3150 Terminal block w/screws
KEY PART
NO. NO.
DESCRIPTION
11 41C4842 Universal replacement motor &
bracket assembly,
Complete with: Motor, worm,
bracket, bearing assembly, RPM
sensor.
12 41A5525-3 Cover
13 41A2818 Limit switch drive & retainer
14 41D3452 Limit switch assembly
15 41A2822-1 Interrupter cup assembly
16 41C4398A RPM sensor assembly
17 41AB050-2M Receiver logic board assembly
Complete with Logic board
18 41C5497 High voltage wire harness
41C5548 Low voltage wire harness
19 41D180-1 End panel
NOT SHOWN
41A2826-1 Shaft bearing kit
41A2825 Opener assembly hardware kit
(includes screws not designated
by a number in illustration)