Slide Gate SL930 parts

LiftMaster SL930 slide gate operator replacement parts diagram

LiftMaster SL930 Slide Gate Operator Parts

Genuine replacement parts for the LiftMaster SL930 DC slide gate operator. Use the exploded view above with the tables below to identify what you need, then click any part number to order.

Before you order — three things to check.

1. The SL930 runs a 70 volt DC motor, not 12 or 24 volt. It is not the same platform as the SL505 or SW425 even though it shares a few service kits with them. The 20-40351 motor, the 21-40359 12V transformer and the 9596 main transformer are specific to this operator.

2. Two kits differ from the SL920 by a single digit. The SL930 takes drive sprocket kit K75-40401 and limit switch kit K74-40347. The SL920 takes K75-40402 and K74-40386. All four are real and all are stocked, so this can go wrong in either direction. The two operators do share the rectifier, external resistor, idler sprocket and reduction sprocket kits — but not the motor, the transformer, the limit switch kit or the drive sprocket kit.

3. Most of the drive train is sold as lettered service kits. There are four separate sprocket kits — idler, drive, reduction, and the motor and gear box assembly — and ordering the wrong one is easy. Match the letter on the drawing before you buy.

This is an older platform and much of it is discontinued. The motor, gear box service kit, limit switch, limit nut and limit/drive shaft assembly are all no longer available from LiftMaster. Where a part is still stocked here, it is stock on hand.

Part numbers shown as plain text rather than links are no longer available from the manufacturer. They are listed so you can identify what you have.

Common SL930 Repairs

Symptom Usual cause Parts to check
Gate overruns or will not stop Limit switch or limit nut worn K23-40050, 13-40362, Limit Switch Kit K74-40347
Motor runs, gate does not move Sprocket or chain worn Drive Sprocket Kit K75-40401, Idler Kit K75-40346, 19-41750 chain
Grinding or rumble under load Gear box worn AGS3016 gear box, Motor/Gear Box Kit K75-30350
Batteries never reach full charge Charge board or rectifier K79-40370 charge board, Rectifier Kit K74-40084
Gate slow or quits under load Batteries at end of life 29-NP712, 21-40359 12V transformer
No power at all Main transformer or relay 9596 transformer, 23595-73 relay
Manual release will not engage Toggle switch or shaft assembly 23-40357, Limit/Drive Shaft Kit K72-40359

Individual Parts

Ref Part # Description
1 13-40362 Limit Nut — no longer available
2 20-40351 Motor, 70V DC, 1/2 HP — no longer available
3 9596 Transformer, 120V 60Hz, 66V
4 K23-40050 Limit Switch — no longer available
5 23-40357 Toggle Switch, SPST, Manual Release
7 29-40355 Resistor, 10 Ohm — no longer available
8 29-40089 Sonalert Piezo Alarm
9 29-NP712 Battery, 12V 7AH
11 21-40359 Transformer, 12V
12 23595-73 Relay, 12V DC (29-40376)
13 AGS3016 Gear Box (32-40352)

Service Kits

Ref Part # Description
A K72-40359 Limit / Drive Shaft Assembly — no longer available
B K74-40084 Bridge Rectifier Assembly
C K75-30350 Motor / Gear Box with Sprocket — no longer available
D K74-40347 Limit Switch Service Kit — no longer available
F K74-40065 External Resistor Service Kit
G K75-40346 Idler Sprocket Service Kit
H K75-40401 Drive Sprocket Service Kit
I K75-40403 Reduction Sprocket Service Kit

Chains and Boards

Ref Part # Description
19-41750 Drive Chain, #41, 30 ft
1A4283 Limit Chain — no longer available
K79-40370 Control Board, Battery Charge

See also the SL920 parts page, or the full LiftMaster gate operator parts catalog.