Repair Parts - Chamberlain 8557 Manual

Repair Parts

Rail Assembly Parts
Description
1 Belt - for 7 foot door
Belt - for 8 foot door
Belt - for 10 foot door
2 Belt Pulley Bracket
3 Master Link
4 One-Piece Rail
7 feet (2.1 m)
One-Piece Rail
8 feet (2.4 m)
One-Piece Rail
10 feet (3 m)
5 Trolley Assembly
6 Tensioner Assembly
7 Trolley Threaded Shaft
Not Shown
Owner's Manual
Part Number
41A5434-11
41A5434-13
41A5434-14
41B5424
2
4A1008
2777BD
2778BD
2770BD
41B3869-3A
41B4103
5
109B48
114A4665
1
Installation Parts
Description
3
1 Curved Door Arm
6
2 Door Bracket with Clevis
Pin and Fastener
3 Emergency Release Rope
and Handle
4 Header Bracket with
Clevis Pin and Fastener
5 Remote Control Visor Clip
4
6 Safety Sensor Bracket
7 Safety Sensor Kit
Receiving and sending
sensors with 2-conductor
7
wire
8 Straight Door Arm
9 White and Red/White Wire
10 3V2016 Lithium Battery
39
Part Number 2
3
178B35
41A5047-1
11
41A2828
41A4353-1
9
29B137
8
41A5266-1
10
41A5034
178B34
41B4494-1
10A19
1
7
4
6
5