LiftMaster 85802 Chain Drive Replacement Parts

LiftMaster 85802 Replacement Parts

Genuine replacement parts for the LiftMaster 85802 chain drive garage door opener — a DC unit with battery backup. Each section below has its own diagram and its own numbering starting at 1, so match the section name as well as the reference number. Click any part number to order.

Garage Door Opener Repair Parts

LiftMaster 85802 chain drive garage door opener motor unit parts diagram

Ref	Part Number	Description
1	041C5069	Chassis support bracket
2	041-0035	Chain spreader and sprocket
3	041A7618	End panel with battery cover and light socket
4	041A7562	Light lens
5	041C0279	Light socket
6	041D0277-1	Transformer
7	041-0132	Cover — not currently stocked
8	041D8006-1	Motor with travel module. Now supplied as the 041-0236-000
9	041D8071-4	Travel module
10	041D0216-2	End panel and light socket
11	050DCTB	Receiver logic board. Also stocked as the 050DCTBFMC
12	485LM	Battery backup, 12V
—	041D9204	Wire harness (not shown)
—	041B4245-1	Line cord (not shown)
—	041A3150	Terminal block (not shown)

Rail Assembly Parts

The 85802 runs on an I-beam rail. Rail and chain come in matched lengths from 7 ft up to 14 ft — match both to your door height.

Ref	Part Number	Description
1	041D3484	Chain — 7 ft (2.1 m) door
1	041D3483	Chain — 8 ft (2.4 m) door
1	041D3485	Chain — 10 ft (3 m) door
1	19-5812	Chain — 12 ft door, #48 chain
1	19-5814	Chain — 14 ft door, #48 chain
2	041A2780	Chain pulley bracket
3	004A1008	Master link
4	3707CH	One-piece I-beam rail — 7 ft (2.1 m) door
4	3708CH	One-piece I-beam rail — 8 ft (2.4 m) door
4	3710CH	One-piece I-beam rail — 10 ft (3 m) door
4	G3712RV	I-beam rail assembly — 12 ft door
4	G3714RV	I-beam rail assembly — 14 ft door
5	041A3489	Trolley assembly. Includes threaded shaft, nuts, washer, clevis pin, ring, master link and chain extension
6	041A6689	Trolley threaded shaft
—	K083A0011-1	Rail grease (not shown)

Installation Parts

Ref	Part Number	Description
1	041B0035B	Curved door arm
2	041A5047	Door bracket with clevis pin and fastener
3	041A2828	Emergency release rope and handle
4	041A4353	Header bracket with clevis pin and fastener
5	K029B0137	Remote control visor clip
6	041-0155-000	Safety sensor bracket. Replaces the 041A5266-3 shown on the diagram, which is no longer available
7	041-0136	Safety sensor kit, receiving and sending sensors with 3 ft 2-conductor wire. Replaces the 041A5034 shown on the diagram
8	4178B0034B	Straight door arm
9	041B4494-1	White and red/white wire
10	K010A0020	3V CR2032 lithium battery
11	041A5281-1	Sensor extension bracket (optional)
—	041A2770-6	Installation hardware bag (not shown)

Accessories

Ref	Part Number	Description
1	880LMW	Smart Control Panel
2	893LM	3-button remote control. The 893MAX is the universal replacement

Superseded Part Numbers

The diagrams print the original numbers. These parts are now supplied under new numbers — order the current part.

Ref	Number on diagram	Order this instead
Opener 8	041D8006-1	041-0236-000 DC motor and travel module
Install 6	041A5266-3	041-0155-000 sensor brackets
Install 7	041A5034	041-0136 safety sensor kit

85802 or 8587W? They share the same rail, installation parts and accessories, but the heads are different machines. The 85802 is a DC unit with battery backup running the 050DCTB board; the 8587W is an AC unit with a Wi-Fi board and a capacitor. Check the model number on the front panel before ordering any part from the first table.