Liftmaster SL585U & SL585UL Slide Gate Parts
LiftMaster SL585U & SL585UL Replacement Parts
Genuine LiftMaster replacement parts for the SL585U and SL585UL commercial slide gate operators — the UL325 generation of the SL585, 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.
Almost everything on this page is ordered by configuration code, not just by model. Read the full code off the data plate — SL585501U, SL585503U, SL585505U, SL585101U, SL585103U, SL585105U or SL585151U.
E-box (Ref 1) and motor (Ref 16) both split by that code. Three e-boxes and seven motors; ordering on the model alone will get the wrong part.
Single phase or three phase? Ref 9 is the K1D8284-1CC motor drive board for 1PH and the K1D8424-1CC power board for 3PH. The three-phase and 575V builds also need the matching K94-38062-x power board ID resistor.
Not a UL325 unit? The earlier SL585 and SL585GL have no logic board and share only the mechanical parts.
Common SL585U Repairs
| Symptom | Usual cause | Parts to check |
|---|---|---|
| Gate slips or stalls under load | Clutch disk worn or out of adjustment | K39-34786 clutch disk, K75-34791 clutch kit |
| Motor runs but the gate does not move | Gear reducer | K32-34792 gear reducer, 30:1 |
| 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, limit chain or limit nut | K76-37667-1 limit box kit, K19-48069-NP limit chain, 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 | K94-37753 reset with ID harness, K94-38062-x resistor |
| Erratic travel or missed counts | Hall effect board or RPM cup | K2A0878 hall effect board, K13-32087 RPM cup |
| No warning tone before the gate moves | Alarm kit | K94-37754 alarm kit |
Gate Operator Repair & Service Parts
| Ref | Part # | Description |
|---|---|---|
| 1 | K74-39295-1 | E-Box — SL585501U / SL585101U / SL585151U |
| 1 | K74-39295-2 | E-Box — SL585503U / SL585103U |
| 1 | K74-39295-3 | E-Box — SL585505U / SL585105U |
| 2 | K76-37667-1 | Limit Box Kit |
| 3 | K13-32087 | RPM Cup |
| 4 | K13-10024 | Limit Nut |
| 5 | K23-10041 | Limit Switch, 10A, 125/250VAC |
| 6 | K1D6761-1CC | Logic Board, AC |
| 7 | K21-3260-1 | Transformer, 120/208/230/460, 60VA |
| 7 | K204A0276 | Transformer, 575VAC, 200VA |
| 8 | K1D8387-1CC | Expansion Board, UL325 |
| 9 | K1D8284-1CC | Motor Drive Board, 1PH |
| 9 | K1D8424-1CC | Power Board, 3PH |
| 10 | K75-37576 | Cover Kit |
| 11 | K75-34791 | Clutch Kit, SL585 |
| 12 | K19-48069-NP | Limit Chain Kit, #48 x 69, NP |
| 13 | K32-34792 | Gear Reducer, 30:1 |
| 14 | K39-34786 | Clutch Disk |
| 15 | K94-37754 | Alarm Kit, SL585U |
| 16 | K94-37694-1 | Motor — SL585501U |
| 16 | K94-37695 | Motor — SL585503U |
| 16 | K94-37739-1 | Motor and Harness Kit — SL585505U |
| 16 | K94-37694-2 | Motor — SL585101U |
| 16 | K94-37766 | Motor — SL585103U |
| 16 | K94-37739-2 | Motor and Harness Kit — SL585105U |
| 16 | K94-37694-3 | Motor — SL585151U |
| 17 | K23-34815-1 | Reset Switch |
| 18 | K76-38057 | Heater Kit, 575V |
| 19 | K75-34790 | Disconnect Kit |
| 20 | K75-38037 | Latch Cover and Switch, 1PH |
| 21 | K75-18493 | Chain Guide Kit |
| 22 | K75-34828 | Idler Shaft Kit |
| 23 | K12-4164 | Flanged Bearing, Self-Aligning |
| 24 | 15-50B12LGH | Sprocket, 50B12, 1" Bore |
| 25 | K71-B1PH-1 | Brake Solenoid, 120/240V |
| 25 | K71-B3PH-1 | Brake Solenoid, 240V, 3PH |
| 25 | K71-B3PH | Internal Brake Solenoid, 208/230V, 3PH |
| 25 | K71-B575 | Internal Brake Solenoid, 575V |
| 26 | K22-120 | Brake Solenoid, 120V |
| 26 | K22-575-1 | Brake Solenoid, 575V |
| 26 | K22-36900 | Brake Solenoid, 3PH, L5 |
| 27 | K75-10177 | Brake Hub Kit |
Parts Not Shown in Diagram
| Ref | Part # | Description |
|---|---|---|
| — | K2A0878 | Hall Effect Board |
| — | K75-37670 | Limit Shaft and Sprocket Kit, SL585U |
| — | K77-38121 | Wire Harness, SL585U / SL595U |
| — | K94-38062-1 | Power Board ID Resistor, 1/2 HP, 3PH |
| — | K94-38062-2 | Power Board ID Resistor, 1 HP, 3PH |
| — | K94-38062-4 | Power Board ID Resistor, 1/2 HP, 575V |
| — | K94-38062-5 | Power Board ID Resistor, 1 HP, 575V |
| — | K10-3209 | Gate Bracket |
| — | K11-3503 | Take Up Bolt |
| — | 19-3025 | Chain, #50 x 471, NP |
| — | K75-34824 | Chain Guard Kit |
| — | K80-9001 | Feather Key |
| — | K94-37753 | Reset Switch with ID Harness Kit |