37
Rail Assembly Parts
DESCRIPTION PART NUMBER
1 Chain - for 7 foot door
Chain - for 8 foot door
Chain - for 10 foot door
41D3484
41D3483
41D3485
2 Chain Pulley Bracket 41A4813
3 Master Link 4A1008
4 One-Piece Rail
7 feet (2.1 m)
One-Piece Rail
8 feet (2.4 m)
One-Piece Rail
10 feet (3 m)
1707LM
1708LM
1710LM
5 Trolley Assembly 41A3489
6 Trolley Threaded Shaft 109B48
NOTSHOWN
Owner'sManual 114A4246
Installation Parts
DESCRIPTION PART NUMBER
1 Curved Door Arm 178B35
2 Door Bracket with Clevis
Pin and Fastener
41A5047-1
3 Emergency Release Rope
and Handle
41A2828
4 Header Bracket with Clevis
Pin and Fastener
41A5047-2
5 Remote Control Visor Clip 29B137
6 Safety Sensor Bracket 41A5266-1
7 Safety Sensor Kit
Receiving and sending
sensors with 3 feet (.9 m)
2-conductor wire
41A5034
8 Straight Door Arm 178B34
9 White and Red/White Wire 41C5141-1
10 3V2032 Lithium Battery 10A20
11 Battery Backup 485LM
Contact Information
Addressrepair parts order to:
The Chamberlain Group, Inc.
6050 S. Country Club Rd.
Tucson, AZ 85706
For installation and service information call:
1-800-528-9131
Or visit us online at:
www.liftmaster.com
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.
NOTICE
UP
CEILING MOUNT ONLY
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9
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11
Repair Parts