Craftsman 139.18453D Garage Door Opener User Manual


 
Motor Unit Assembly Parts
38
DN
UP
Brown
Wire
(Down)
Contact
LIMIT SWITCH
ASSEMBLY
Grey
Wire
Yellow
Wire
(Up)
Contact
Center Limit
Contact
Drive
Gear
1
2
4
3
18
19
17
15
10
14
12
8
9
11
5
6
7
16
13
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 41A5484-5 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 41A5525-28 Cover
13 41A2818 Limit switch drive & retainer
14 41D3452 Limit switch assembly
15 41A2822-1 Interrupter cup assembly
16 41C4398A RPM sensor assembly
17 41AC150-1 Receiver logic board assembly.
Complete with: Logic board,
end panel w/all labels, light
socket
18 41C5497 High voltage wire harness
41C5498 Low voltage wire harness
19 41D179 End panel w/all labels
NOT SHOWN
41A2826 Motor shaft bearing kit
41A2825 Opener assembly hardware kit
(includes screws not
designated by a number in
illustration)