Sears 139.53975SRT1 Garage Door Opener User Manual


 
Motor Unit Assembly Parts
5
7
19 18
17
16
15
"13
14
(Down) LIMIT SWITCH
Brown Contact ASSEMBLY
Wire \
\
Wire
Gear
Center Limit (Up) Yellow
Contact Contact Wire
KEY PART KEY PART
NO. NO. DESCRIPTION NO. NO. DESCRIPTION
1 31D380 Sprocket cover 12 41A3150 Terminal block w/screws
2 41C4220A Gear and sprocket assembly 13 41D3058 Universal replacement motor &
Complete with: Spring washer, bracket assembly
Thrust washer, Retaining ring, Complete with: Motor, worm,
Bearing plate, Roll pins (2), bracket, bearing assembly,
Drive gear and worm gear, RPM sensor
Helical gear w/retainer and 14 41D328-7 Cover
grease 15 41A2818 Limit switch drive & retainer
3 41A2817 Drive/worm gear kit w/grease
Roll pins (2) 16 41D3452 Limit switch assembly
4 41B4245 Line cord 17 41C4398A RPM sensor assembly
5 41C4253 Wire harness assembly w/plug 18 41A2826 Shaft bearing kit
6 41A5021-2F Receiver logic board assembly 19 41A2822A Interrupter cup assembly
7 41A4351 End panel w/all labels 20 41A4352 End panel
8 175B88 Light socket NOT SHOWN
9 108D58-2 Lens 41A2825 Opener assembly hardware kit
(includes screws not designated
10 30B363 Capacitor - 1/2 HP by a number in illustration).
11 12A373 Capacitor bracket
38