38
Motor Unit Assembly Parts
1
17
19
8
10
11
7
18
3
7
13
14
15
12
9
6
6
16
5
4
2
DN
UP
Brown
Wire
(Down)
Contact
Grey
Wire
Yellow
Wire
(Up)
Contact
Center Limit
Contact
Drive
Gear
KEY PART
NO. NO.
DESCRIPTION
1 41A5615 Chain
Spreader
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
w/retainer and grease
3
41A2817
Drive/worm gear kit w/grease,
roll pins (2)
4 41B4245 Line
cord
5
41A5484-2
End panels w/all labels
6 4A1344
Light
socket
7 108D77
Lens
8
30B532
Capacitor - 1/2 HP
9 12A373
Capacitor
bracket
10 41A3150
Terminal
block
w/screws
11
41D3058
Universal replacement motor &
bracket assembly.
Complete with:
Motor, worm,
bracket, bearing assembly, RPM
sensor
KEY PART
NO. NO.
DESCRIPTION
12 41A5525-26 Cover
(Model
139.18458DM)
41D503-2
Cover (Model 139.18459DM)
13
41A2818
Limit switch drive & retainer
14
41D3452
Limit switch assembly
15 41A2822-1 Interrupter
cup
16 41C4398A RPM
sensor
assembly
17
41AC150-2M Receiver logic board assembly.
Complete with:
Logic board, end
panel w/all labels, light socket
18
41C5499
High voltage wire harness
41C5512
Low voltage wire harness
19
41D178-1
End panel w/all labels
NOT SHOWN
41A2826
Motor shaft bearing kit
41A5258-9
Opener assembly hardware kit
(includes screws not designated by
a number in illustration)
LIMIT SWITCH ASSEMBLY