Chamberlain WD822K & 47995D Belt Drive Parts

Chamberlain WD822K, WD822KD and 47995D Replacement Parts

These are Whisper Drive square rail belt openers. Their belt, rail and trolley are square rail specific and will not interchange with the T-rail parts used on most belt drives. This parts list covers all variants:

WD822K
WD822KS
WD822KD
47995D

Ordering a belt? These openers take the 041A5250 square rail belt, sized to your door height — 7, 8 or 10 ft. Measure the door opening, not the rail. Note that 41AB050-2M is the logic board, not a belt — the two are often confused.

1. Garage Door Opener Repair Parts

Chamberlain WD822K WD822KD 47995D belt drive opener parts diagram

First part of number below corresponds to diagram number above:

Ref	Part Number	Description
01	041A4371	Belt cap retainer
02	041A4885-5	Gear and sprocket assembly
03	041A2817	Gear kit
04	041B4245-1	Line cord, 6 ft
05	041A5484	End panel with all labels
06	041C0279	Light socket
07	K108D0079M	Light lens
08	K030B0532-1	Capacitor
09	K012A0373	Capacitor bracket
11	41C4842	Universal replacement motor and bracket assembly
11–12	41A5525-4	Cover — no longer available
13	041A2818	Limit switch drive and retainer
13	041D3452	Limit switch assembly
15	041A2822-1	Interrupter cup
16	041C4398A	RPM sensor assembly
17	041AB050-2M	Receiver logic board assembly — current replacement
17	41A5483-4B	Receiver logic board assembly — no longer available
18	041C5499	High voltage wire harness
18a	041C5500	Low voltage wire harness
19	041D0180-1	End panel
—	041A2770-17	Installation hardware kit

Logic board — order the 041AB050-2M. The original 41A5483-4B is discontinued and the 041AB050-2M replaces it. You may see this board described elsewhere as a "Whisper Drive belt" — it is not a belt, it is the circuit board. Read the number printed on the board you are removing to confirm, and call (866) 965-5599 if it is neither. The cover (41A5525-4) is discontinued with no replacement.

If the motor runs and the door does not move, that is the gear and sprocket assembly at ref 02 — the nylon gear strips. Grease the worm before fitting the new one; running it dry is what strips the next.

2. Belt and Square Rail

Ref	Part Number	Description
—	041A5250	Full belt assembly — 7 ft door
—	041A5250-1	Full belt assembly — 8 ft door
—	041A5250-2	Full belt assembly — 10 ft door
—	041A5665	Square rail assembly
—	041C5141-2	Complete trolley assembly, square rail
—	041D0598-1	U bracket, square rail
—	K144C0054M	Belt idler pulley
—	041B4103	Belt tensioner assembly
—	041A7276	Wear pads
—	004A1008	Master link kit

A belt rarely fails on its own. Check the idler pulley, trolley, tensioner and wear pads while the rail is apart — worn pads let the trolley rock in the rail and will chew through a new belt in months. See all Chamberlain belt and rail parts.

3. Safety Sensors and Brackets

Ref	Part Number	Description
—	041-0136	Safety sensor eye kit — replaces 41A5034
—	041-0155-000	Safety sensor brackets, 2021 to present
—	041-0365-000	Sensor eyes and brackets — the complete set
—	041B0873	Sunblocker bracket — stops sunlight false-tripping the eye
—	041B4494-1	2 conductor bell wire, 26 ft

The current 041-0136 eye kit replaces the older 41A5034 and fits Chamberlain and LiftMaster openers alike — both brands are built by the same manufacturer. If your brackets are bent or missing too, the 041-0365-000 includes eyes and brackets together.

4. Door Hardware and Remotes

Ref	Part Number	Description
—	041B0035B	Curved door arm
—	4178B0034B	Straight door arm section
—	041A8094	Door arm kit — curved and straight sections together
—	041A5047-1	Door bracket with clevis pin and fastener
—	041A5047-3	Header bracket — square rail
—	041A2828	Emergency release rope and handle
—	893MAX	3 button remote control — universal replacement
—	041C0494-2	Multi-function door control panel

These are square rail openers, so they take the 041A5047-3 header bracket — the standard header brackets will not fit. The 893MAX replaces every older Chamberlain, LiftMaster and Craftsman remote. Browse all Chamberlain remote controls.