Craftsman 139.53920D Garage Door Opener User Manual


 
Motor Unit Assembly Parts
l
16 15
(Cowl1) LIMIT SWITCH
Brown Contact ASSEMBLY
Wire \./'_
',-_.
_ ........_ Wire
Drlva _r_
Gear =_"_4_J"_
Cenler _'_it _ Ye_ow
Contact Conlact Wire
14
13
12
KEY
NO.
1
2
4
5
6
7
8
9
I0
11
PART
NO.
41A5615
4t C4220A
41A2817
4IB4245
41A4352
4A1344
108D58-2
30B532
12A373
41A3150
41D3058
DESCRIPTION
Chain Spreader
Gear and sprocket assembly
Complete with: Spring washer,
Thrust washert Retaining ring,
Bearing plate, Roll pins (2), Drive
gear and worm gear; Helical gear
w!retainer and grease
Drive/worm gear kit with grease
KEY
NO.
12
13
14
15
16
17
PART
NO.
41D328-4
41A2818
41D3452
4IC439BA
4IC4246
41A2826
DESCRIPTION
Cover - 1/2 HP
Limit switch drive and retainer
Limit switch assembly
RPM sensor assembly
Wire harness assembly
with plug
Shaft bearing kit
Roti pins (2)
Line cord
End panel
Light socket
Lens
Capacitor- 1/2 HP
Capacitor bracket
Terminal block with screws
Universal replacement motor &
bracket assembly
Complete with: Motor, worm,
bracket, beadng assembly, RPM
sensor
18
t9
2O
41A2822A
41A5021-3H-315
41A3691
41A2825
Interrupter cup assy,
Receiver logic board assy,,
Complete with: Logic board,
End panel with al labels
End panel with all labels
NOT SHOWN
Opener assembly hardware kit
(includes screws not
designated by a number in
ilustration)
38