The Rotary ALS-7536-69K4 is the direct-replacement arm restraint gear for the Rotary lift it came off of — the genuine part, same fit and same working specification as the one already on your lift. Ordering the Rotary arm restraint gear from us gets you the OEM piece that matches the lift, not an aftermarket knock-off that is close but not the same.

Specifications

• Part number: ALS-7536-69K4
• Brand: Rotary
• Type: Genuine OEM arm restraint gear
• Fits: SPO15 300 Series, SPO18 300 Series
• Lift type: 2-post lift

There is no part on a lift where "I'll get to it later" is more misplaced than the locks. This is the component that holds a car over a technician's head. A rounded tooth or a sticky pawl gives no second warning — it holds until the day it doesn't. Restraint gear and safety latches are cheap and the labor is modest; skipping them to save an afternoon trades a small job for a catastrophic one.

Lock parts wear slowly but steadily every time the lift cycles. Each engagement bangs the pawl against a tooth; over thousands of cycles the contact faces peen over and round off. Dirt and dried grease build up in the pivot until the pawl gets lazy. A commercial lift that racks up cycles all day will round its lock teeth years before a low-use lift does — but neglect and rust can age either one fast.

What lifts this arm restraint gear fits

This arm restraint gear fits the lift models below. Click a model to open its visual parts breakdown — the exploded drawing with every part numbered, so you can confirm this is the right part for your exact lift before you order.

• SPO15 — see the exploded parts breakdown for this lift
• SPO18 — see the exploded parts breakdown for this lift

Related parts for this lift

The parts below are commonly ordered alongside this one — cables, sheaves, seals, and hardware wear on similar schedules, and most repairs go faster when the whole set is done in one visit.

• Outer Swing Arm - Rotary FJ7763-1
• Arm Swivel Pin - Rotary FJ7832
• Inner Swing Arm (SPO15) - Rotary FJ7819-2
• Swing Arm Adapter Assembly - Rotary FJ7822-1
• Arm Restraint KIT 1 Arm
• Arm Restraint Gear (not adj.) 1-3/4" ID - Rotary FJ7831

Replacing your arm restraint gear

Replacing a lock ladder means getting the old one off its mounts, fitting the new one so the teeth line up with the pawl's travel, and securing it with no play. Then cycle the lift and watch the pawl catch a full tooth at every height. Because this is the lift's last line of defense, the full procedure is worth following start to finish. Full step-by-step: how to replace lift arm restraint gears.

Find the right part for your lift

Landed here but not 100% sure it is your part? Grab the model and serial from the data plate and open our Rotary parts lookup for the visual breakdown — the manufacturer-style drawing with every item numbered so you can match yours exactly. Plate missing? our guide to finding your model number helps, and we identify lifts from photos every week if you would rather ask.

Signs the locking system needs attention

Look at the pawl nose itself, not just the ladder. The contact face wears and rounds the same way the teeth do, and a rounded nose on a good ladder still skips. If the nose is peened, chipped, or no longer square, replace the pawl even if the ladder looks fine — both faces have to be sharp to hold.

Parts commonly replaced at the same time

Lock hardware works as a set, so when one part is worn the others usually are too — latches, pawls, springs, and the release cable all age together. Doing the full lock rebuild on both columns at once keeps engagement even and saves a second teardown. We will assemble the complete lock kit for your model.

Safety notes

The locking system is the last line of defense on a lift, so a worn latch or sticky pawl is a safety defect, not a nuisance. Both columns must engage and release together; if one clicks late or drags, the lift comes out of service until it is corrected. Never defeat or wire back a lock to keep a lift running.

Before you order

Have your model and serial ready, and note whether you need parts for one column or both — even lock wear is best corrected as a set. If the release cable is stretched or frayed, order it alongside the latch and pawl. Not sure which version your lift uses? Send a photo of the old parts.

Not sure this fits? Here's how to check

Pull the number off your lift's model plate first — model and serial both. Manufacturers run mid-cycle revisions that keep the model name but change hardware, so two lifts with the same name on the column can take different parts. The serial is what removes the guesswork.

Second check: compare the old part against this listing before you order. Length, mounting pattern, and thread sizes tell most of the story. If anything doesn't line up, or if the old part is too worn or broken to measure, call us with photos — we work on these lifts every week and can usually confirm fit from a picture and the lift's serial faster than you can dig through a parts diagram.

Why buy your Rotary arm restraint gear from Auto Lift Services

We install, inspect, and repair Rotary lifts every week — the ALS-7536-69K4 is a part we handle in the shop, not a random SKU we drop-ship. The phone answers if you have a question mid-install — call 800-674-9302 — and every part ships genuine, no aftermarket substitution unless you ask for it.