Liftmaster SL595U & SL595UL Slide Gate Parts
LiftMaster SL595U & SL595UL Replacement Parts
Genuine LiftMaster replacement parts for the SL595U and SL595UL commercial slide gate operators — the UL325 generation of the SL595, with a logic board, motor drive board and model-coded electrical box. Use the exploded diagram above to find the key number for the part you need, then click any part number in the tables below.
Order by configuration code, not just by model. Read the full code off the data plate — SL595101U, SL595103U, SL595203U, SL595105U, SL595205U or SL595151U.
E-box and motor both split by that code. The Electrical Box Assembly table lists three e-boxes and Ref 19 lists six motors; ordering on the model alone will get the wrong part.
Single phase or three phase? Ref 2 is the K1D8284-1CC motor drive board for 1PH and the K1D8424-1CC power board for 3PH. Three-phase and 575V builds also need the matching K94-38062-x power board ID resistor.
Not a UL325 unit? The earlier SL595 and SL595GL have no logic board and share only the mechanical parts.
Common SL595U Repairs
| Symptom | Usual cause | Parts to check |
|---|---|---|
| Gate slips or stalls under load | Clutch worn or out of adjustment | K75-32463 clutch kit, K39-10541 clutch disk |
| Motor runs but the gate does not move | Gear reducer | K32-10540 gear reducer, 20:1 |
| Gate coasts or will not hold position | Brake solenoid — match voltage and phase | K71-B1PH-1 / K71-B3PH-1 / K71-B575, K75-10177 brake hub kit |
| Gate overruns or stops short | Limit box or limit nut | K76-37667-2 limit box kit, K13-10024 limit nut |
| Operator dead, no board lights | Transformer or logic board | K21-3260-1 or K204A0276 transformer, K1D6761-1CC logic board |
| Board reports the wrong operator type | Reset switch ID harness or power board resistor | K94-37871 reset with ID harness, K94-38062-x resistor |
| Erratic travel or missed counts | RPM cup or drive shaft | K13-32087 RPM cup, K75-37556 drive shaft kit |
| Chain slack or noisy drive | Chain, idler sprocket or idler shaft worn | K19-4853 chain, K305-153613 idler sprocket, K11-37823 idler shaft |
Gate Operator Repair & Service Parts
| Ref | Part # | Description |
|---|---|---|
| 1 | K1D6761-1CC | Logic Board, AC |
| 2 | K1D8284-1CC | Motor Drive Board, 1PH |
| 2 | K1D8424-1CC | Power Board, 3PH |
| 3 | K1D8387-1CC | Expansion Board, UL325 |
| 4 | K77-36541 | Antenna |
| 5 | K21-3260-1 | Transformer, 120/208/230/460, 60VA |
| 5 | K204A0276 | Transformer, 575VAC, 200VA |
| 6 | K75-38037 | Latch Cover and Switch, 1PH |
| 6 | K180A0385-3 | Latch Cover and Switch, 3PH |
| 7 | K75-10177 | Brake Hub Kit |
| 8 | K10-30702-2 | Chain Guard Top Cover |
| 9 | K75-37700 | Chain Guard and Idlers |
| 10 | K305-153613 | Idler Sprocket |
| 11 | K23-34815-1 | Reset Switch |
| 12 | K10-30699-1 | Chain Cover Mounting Bracket with Cover |
| 13 | K32-10540 | Gear Reducer, 20:1 |
| 14 | K19-4853 | Chain, #48 x 53, No ML |
| 15 | K13-32087 | RPM Cup |
| 16 | K13-10024 | Limit Nut |
| 17 | K12-3601 | Pillow Block Bearing |
| 18 | K11-37823 | Idler Shaft |
| 19 | K94-37848-1 | Motor — SL595101U |
| 19 | K94-37849-1 | Motor — SL595103U |
| 19 | K94-37849-2 | Motor — SL595203U |
| 19 | K94-37850-1 | Motor — SL595105U |
| 19 | K94-37850-2 | Motor — SL595205U |
| 19 | K94-37848-2 | Motor — SL595151U |
Electrical Box Assembly
| Ref | Part # | Description |
|---|---|---|
| — | K74-39299-1 | E-Box — SL595101U / SL595151U |
| — | K74-39299-2 | E-Box — SL595103U / SL595203U |
| — | K74-39299-3 | E-Box — SL595105U / SL595205U |
Service Kits
| Ref | Part # | Description |
|---|---|---|
| K1 | K71-B1PH-1 | Brake Solenoid, 120/240V |
| K1 | K71-B3PH-1 | Brake Solenoid, 240V, 3PH |
| K1 | K71-B3PH | Internal Brake Solenoid, 208/230V, 3PH |
| K1 | K71-B575 | Internal Brake Solenoid, 575V |
| K2 | K75-37687 | Enclosure |
| K3 | K75-37549 | Disconnect Kit |
| K4 | K76-37667-2 | Limit Box Kit |
| K5 | K75-37556 | Drive Shaft Kit |
| K6 | K75-32463 | Clutch Kit |
Parts Not Shown in Diagram & Accessories
| Ref | Part # | Description |
|---|---|---|
| — | K77-38121 | Wire Harness, SL585U / SL595U |
| — | K94-37871 | Reset Switch with ID Harness, SL595 |
| — | K94-37884 | Alarm Kit, SL595U |
| — | K94-38062-2 | Power Board ID Resistor, 1 HP, 3PH |
| — | K94-38062-3 | Power Board ID Resistor, 2 HP, 3PH |
| — | K94-38062-5 | Power Board ID Resistor, 1 HP, 575V |
| — | K94-38062-6 | Power Board ID Resistor, 2 HP, 575V |
| — | K77-37683 | Main Board Standoffs, Qty 10 |
| — | K77-38105 | C Clamp Kit, SL595U, Qty 2 |
| — | K91-G0149 | Idler Bolt |
| — | K15-50B18QGX | Output Sprocket |
| — | K10-3209 | Gate Bracket Kit |
| — | K11-3503 | Take Up Bolt |
| — | K82-QN43-12 | Screw, 7/16"-14 x 12 |
| — | 19-3025 | Chain, #50 x 471, NP |
| — | HTRNB | Heater Kit for AC Pad Mount Gate Operators |
| — | HTR460 | Heater Kit, 460V Only |
| — | K39-10541 | Clutch Disk |