Liftmaster CSW200U CSW200UL CSW200501U Parts
LiftMaster CSW200U & CSW200UL Replacement Parts
Genuine LiftMaster replacement parts for the CSW200U and CSW200UL commercial swing gate operators — the AC-powered, V-belt driven swing operator sold under configuration codes such as CSW200501U. Use the exploded diagram above to find the key number for the part you need, then click any part number in the tables below to go straight to that product.
Check the horsepower before ordering the V-belt. Ref 25 splits two ways: 1/2 HP takes K16-50110 (4L190), 1 HP takes K16-50195 (4L270). The horsepower is on the motor data plate.
Covers split by model. CSW200U takes K77-38078, CSW200UL takes K77-39434, and K77-37637 is listed for both.
Looking for the Elite-badged CSW 200? LiftMaster acquired Elite and kept the design under new numbers. Elite-branded parts are on the Elite CSW 200 parts page.
Shares its AC drive train with the SL3000. The motor drive board, wire harnesses and several drive parts are common to both, so descriptions that name the SL3000 are correct.
Common CSW200U Repairs
| Symptom | Usual cause | Parts to check |
|---|---|---|
| Motor runs but the gate does not move | V-belt slipping or glazed | K16-50110 / K16-50195 V-belt, K17-50098 and K17-50223 pulleys |
| Gate overruns or stops short | Limit rack or limit switch | K76-37325 limit rack kit, K23-50099 limit switch |
| Motor hums but will not start | Motor capacitor | K29C-65AU2415 capacitor |
| Operator dead, no board lights | Transformer or junction box switch | K21-14182 transformer, K77-37636 junction box kit |
| Gate will not reset after an obstruction | Reset button and its ID resistor | K94-37449 reset button with resistor |
| Erratic travel or missed counts | Hall effect sensor board | K1D8247 hall effect sensor board |
| Chain noise or jumping | Chain or sprocket worn | K19-50040 chain, K15-50B16EES sprocket, K77-37635 kit |
| Cannot release the gate by hand | Cludge arm clamp and handle | K75-50121 clamp and handle, K13-36117-1 cludge cover |
Gate Operator Repair & Service Parts
| Ref | Part # | Description |
|---|---|---|
| 1 | K13-36117-1 | Cludge Cover |
| 2 | K75-50121 | Cludge Arm Clamp and Handle, Q061 |
| 3 | K09-50119 | Output Arm, Q059 |
| 4 | 75-50293 | Standard Arm Assembly, Q104 |
| 5 | K77-37637 | Cover — CSW200U / CSW200UL |
| 5 | K77-38078 | Cover — CSW200U |
| 5 | K77-39434 | Cover — CSW200UL |
| 6 | K75-36260 | Lock and Keys |
| 7 | K80-50295 | Access Door Keys, Qty 2, Q118 |
| 8 | K21-14182 | Transformer, 120/240V, 24VAC, 20VA |
| 9 | K23-50099 | Limit Switch |
| 10 | K29C-65AU2415 | Motor Capacitor, Q027 |
| 11 | K1D8402-1CC | Motor Drive Board, 1PH |
| 12 | K1D6761-1CC | Logic Board, AC |
| 13 | K1D8387-1CC | Expansion Board, UL325 |
| 14 | K13-34729 | E-Box Cover |
| 15 | K77-37638 | Antenna and Coax Cable |
| 16 | K75-37300-2 | E-Box |
| 17 | K73-37195 | Chassis, CSW200 |
| 18 | K94-37461 | Alarm and Harness |
| 19 | K19-50040 | Chain, #50 |
| 20 | K15-50B16EES | Sprocket, #50, 16T, 5/8" Bore, Q183 |
| 21 | K32-37433-1 | Gear Reducer, 40-30:1 (Bottom) |
| 22 | K17-50223 | Gear Reducer Pulley, Q209 |
| 23 | K20-1050B-1RSX | Motor, 1/2 HP, AC |
| 24 | K17-50098 | Motor Pulley, 2-1/2" OD, 1/2" Bore, Q025 |
| 25 | K16-50110 | V-Belt, 4L190, Q045 — 1/2 HP |
| 25 | K16-50195 | V-Belt, 4L270, Q175 — 1 HP |
Parts Not Shown in Diagram
| Ref | Part # | Description |
|---|---|---|
| — | K77-37683 | Main Board Standoffs, Qty 10 |
| — | K94-37449 | Reset Button, with ID Resistor |
| — | K1D8247 | Hall Effect Sensor Board |
| — | K77-37693 | Wire Harnesses, AC |
| — | K94-34778 | Board to Board Wire Harness, 24V |
Service Kits
| Ref | Part # | Description |
|---|---|---|
| K1 | K77-37635 | Sprocket and Chain Kit |
| K2 | K75-50224 | Gear Box Kit, #70 (Top) |
| K3 | K76-37325 | Limit Rack Kit |
| K4 | K77-37636 | Junction Box with On/Off and Receptacle |