Repair Parts - Chamberlain 8550 Manual

Repair Parts

Rail Assembly Parts
DESCRIPTION PART NUMBER
1 Belt - for 7 foot door 41A5434-11
Belt - for 8 foot door 41A5434-13
41A5434-14
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 41B3869-3A
6 Tensioner Assembly
7 Trolley Threaded Shaft
3
2
41B5424
4A1008
2777BD
2778BD
2770BD
7
41B4103
109B48
5
1
Installation Parts
DESCRIPTION
6
1 Curved Door Arm
2 Door Bracket with Clevis
Pin and Fastener
3 Emergency Release Rope
and Handle
4 Header Bracket with Clevis
Pin and Fastener
4
5 Remote Control Visor Clip
6 Safety Sensor Bracket
7 Safety Sensor Kit
Receiving and sending
sensors with 3 feet (.9 m)
2-conductor wire
8 Straight Door Arm
9 White and Red/White Wire
10 3V2016 Lithium Battery
11 Battery Backup
Address repair parts order to:
The Chamberlain Group, Inc.
6050 S. Country Club Rd.
Tucson, AZ 85706
Before calling, please have the model number of the garage door opener. If you are calling about a
Troubleshooting issue, it is recommended that you have access to your garage door opener while calling. If you
are ordering a repair part please have the following information: part number, part name, and model number.
37
3
PART NUMBER
178B35
41A5047-1
41A2828
41A5047-2
29B137 9
41A5266-1
8
41A5034
10
178B34
41C5141-1
10A19
485LM
Contact Information
For installation and service information call:
1-800-528-9131
Or visit us online at:
www.liftmaster.com
2
1
7
4
6
5
11