The Rotary FJ7233 arm restraint gear is the direct replacement for the Rotary lift it came off of. Cross-referenced as ALS-7508-12, it is the genuine Rotary part — same part number, 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-7508-12
• Brand: Rotary
• Type: Genuine OEM arm restraint gear
• Fits: SP55, SP84, SP94, SPO84
• 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.

• SP55
• SP84 — see the exploded parts breakdown for this lift
• SP94 — see the exploded parts breakdown for this lift
• SPO84 — 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.

• Arm Restraint Release Loop - Rotary FJ7985-1
• Arm Restraint Engage Gear - Rotary FJ7449
• Arm Restraint Gear (Adjustable) - Rotary SVI Exclusive
• Arm Restraint Gear (Super Adjustable) - Rotary SVI Exclusive
• Arm Restraint Gear (Not Adjustable) - Rotary FJ7750
• Rear Arm Restraint Assy - Rotary FJ7523

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.

Confirm this is the right part before you order

Lift manufacturers revise parts mid-production without changing the model name, so the same lift bought two years apart can take two different revisions of the same component. Before you order, find the model plate on the lift — on most 2-post lifts it rides on one of the columns at eye level, on 4-post lifts it is usually on a column or the power-unit side runway — and note the full model number and serial. The serial dates the lift to a production run, and that is what decides which revision fits.

If the plate is painted over or missing, take a photo of the part you are replacing next to a tape measure and send it to us. Between the dimensions, the mounting pattern, and what lift it came off of, we can almost always identify the exact part before you spend money on the wrong one.

Why buy your Rotary arm restraint gear from Auto Lift Services

We install, inspect, and repair Rotary lifts every week — the ALS-7508-12 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.