Chamberlain LiftMaster Security + 3270 1/2 HP Manuel D'instructions page 34

Motor Unit Assembly Parts
KEY PART
NO. NO.
1 41A4371
2 41A4885-4
3 41B4245
4 41A5484-1
5 4A1344
6 108D79
7 30B532
8 12A373
9 41A3150
10 41C4842
DESCRIPTION
Belt cap retainer
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
Line cord
End panel w/all labels
Light socket
Lens
Capacitor – 1/2 HP
Capacitor bracket
Terminal block w/screws
Universal replacement
motor
Complete with: Motor,
worm, bracket, bearing
assembly, RPM sensor
(Down)
(Down)
Brown
Contact
Brown
Contact
Wire
Wire
Drive
Gear
Drive
Gear
Center Limit
Contact
Center Limit
Contact
KEY PART
NO. NO.
11 41A5525-3
12 41A2818
13 41D3452
14 41A2822-1
15 41C4398A
16 41AB050-1
17 41C5497
41C5548
18 41D181
NOT SHOWN
41A2826-1
41A2825
34
17
LIMIT SWITCH ASSEMBLY
LIMIT SWITCH ASSEMBLY
Grey
Wire
(Up)
Yellow
Contact
Wire
(Up)
Yellow
Contact
Wire
DESCRIPTION
Cover
Limit switch drive & retainer
Limit switch assembly
Interrupter cup assembly
RPM sensor assembly
Receiver logic board
assembly
High voltage wire harness
Low voltage wire harness
End panel
Shaft bearing kit
Opener assembly hardware
kit (includes screws not
designated by a number in
illustration)
Grey
Wire