LiftMaster 3255 3255 Manual - Page 34

Motor Unit Assembly Parts - 1 2 hp

Page 34 highlights

Motor Unit Assembly Parts 3 6 1 4 18 2 17 5 7 8 11 13 9 14 12 10 16 19 15 Brown Wire (Down) Contact LIMIT SWITCH ASSY. UP DN Drive Gear Center Limit Contact (Up) Contact Grey Wire Yellow Wire KEY PART NO. NO. 1 31D380 2 41C4220A 3 41A2817 4 41B4245 5 41A5484-1 6 4A1344 7 108D79 8 30B532 30B533 9 12A373 10 41A3150 11 41D3058 DESCRIPTION Sprocket cover Gear and sprocket assembly Complete with: Spring washer, thrust washer, retaining ring, bearing plate, roll pins (2), drive gear and worm gear, helical gear with retainer and grease Drive/worm gear kit with grease, roll pins (2) Line cord End panel with all labels Light socket Lens Capacitor - 1/2 HP Capacitor - 1/3 HP Capacitor bracket Terminal block with screws Universal replacement motor and bracket assembly Complete with: Motor, worm, bracket, bearing assembly and RPM sensor KEY PART NO. NO. 12 41A5525-24 13 41A2818 14 41D3452 15 41A2822-1 16 41C4398A 17 41AC050-1 18 41C5498 41C5497 19 41D181 41A2826 41A2825 DESCRIPTION Cover Limit switch drive and retainer Limit switch assembly Interrupter cup assembly RPM sensor assembly Receiver logic board assy. Complete with: Logic board and end panel with all labels Low voltage wire harness assy. High voltage wire harness assy. End panel with all labels NOT SHOWN Motor shaft bearing kit Opener assembly hardware kit (includes screws not designated by a number in illustration) 34

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Motor Unit Assembly Parts
34
2
10
8
13
14
15
19
4
5
3
9
16
12
18
11
17
1
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
31D380
Sprocket cover
2
41C4220A
Gear and sprocket assembly
Complete with:
Spring washer,
thrust washer, retaining ring,
bearing plate, roll pins (2), drive
gear and worm gear, helical gear
with retainer and grease
3
41A2817
Drive/worm gear kit with grease,
roll pins (2)
4
41B4245
Line cord
5
41A5484-1
End panel with all labels
6
4A1344
Light socket
7
108D79
Lens
8
30B532
Capacitor - 1/2 HP
30B533
Capacitor - 1/3 HP
9
12A373
Capacitor bracket
10
41A3150
Terminal block with screws
11
41D3058
Universal replacement motor
and bracket assembly
Complete with
: Motor, worm,
bracket, bearing assembly and
RPM sensor
KEY PART
NO.
NO.
DESCRIPTION
12
41A5525-24
Cover
13
41A2818
Limit switch drive and retainer
14
41D3452
Limit switch assembly
15
41A2822-1
Interrupter cup assembly
16
41C4398A
RPM sensor assembly
17
41AC050-1
Receiver logic board assy.
Complete with:
Logic board
and end panel with all labels
18
41C5498
Low voltage wire harness assy.
41C5497
High voltage wire harness assy.
19
41D181
End panel with all labels
NOT SHOWN
41A2826
Motor shaft bearing kit
41A2825
Opener assembly hardware kit
(includes screws not designated
by a number in illustration)