Chamberlain 2220RGD 1/2 HP - Manual (Page 34)

Motor Unit Assembly Parts
DN
UP
Brown
Wire
(Down)
Contact
LIMIT SWITCH ASSY.
Grey
Wire
Yellow
Wire
(Up)
Contact Center Limit
Contact
Drive
Gear
2
1
3
4
5
6
7
8
8a
8b
8c
9
10
11 11a
11
12
13
14
15
16
17
8d
8d
8e 8f
8g
18
34
KEY PART
NO. NO. DESCRIPTION
1 31D477 Drive shaft cover
2 41B4245 Line cord
3 30B363 Capacitor – 1/2 HP
4 12A373 Capacitor bracket
5 41A3150 Terminal block w/screws
6 41D4671 Limit switch assembly
7 12D630 Bracket: light socket, limit switch
8 41A5388 Motor drive assy. complete with:
8a 144B41 22T Pulley
8b 144B42 28T Pulley
8c 20B17 Drive belt
8d 158A69 Retainer rings
8e 41C556 Isolator bracket spacers
8f 41A5394 Assy. bracket motor mount
8g 81B170-1 Shaft limit worm
KEY PART
NO. NO. DESCRIPTION
9 41C4672 Screw drive RPM kit
10 41A4837-1 Worm gear and retainer
11 41C5417 Low voltage wire harness
11a 41C5416 High voltage wire harness
12 41A5389-1D Receiver logic board assy.
13 41A5490-7 Cover
14 41C22-1 Drive coupling hub
15 175C147 Light socket
16 108D78 Light lens
17 41A5387 Chassis with rail bracket
18 12B654 Motor support bracket