SPX Stone 4477-AB 3 phase Turnstyle switch — a direct-fit replacement electrical control component. Ordering the electrical control component 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-7004-43
- Type: Genuine OEM electrical control component
A small electrical fault left alone becomes a bigger, more expensive one. A loose lug that arcs will eventually burn the terminal, then the wire, then the component it feeds. A chattering contactor hammers the motor with partial voltage until the windings cook. Chasing down a hot connection or a pitted switch early is a cheap fix; letting it run until it melts something takes out the motor or the whole control box.
The electrical side of a lift is what turns wall power into lifting motion: the disconnect and breaker feed a switch or push-button, which energizes a contactor, which sends power to the motor that spins the pump. Limit switches and safety cutoffs sit in the circuit to stop the lift at the top or if an overhead bar is hit. When the lift won't run, the fault is somewhere in that chain — and it's often electrical, not hydraulic.
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.
- Overhead Limit Switch only 1Ø - Rotary N413-1
- SPX Stone P461-2 1258-AA MicroSwitch (also used for OH limit)
- SPX Stone MicroSwitch w/boot
- SPX Stone Rotary W-35 Turnstile Switch for 3ph
- SPX Stone 4610-AA Start Switch Button
- SPX Stone W-138 3 phase Turnstyle switch
Replacing your electrical control component
Replacing a contactor or switch means matching voltage and rating, killing power at the breaker, and landing the wires exactly as they came off — photograph the connections first. Then confirm the lift runs only while the button is held and stops the instant it's released. The step-by-step guide covers the wiring and the checks. Not sure on the procedure? Find your lift in our parts lookup or call and we will walk you through it.
Find the right part for your lift
If you are not sure this part matches your setup, the fastest check is the visual breakdown: open our parts lookup, pick your model, and match your part against the drawing where every item is numbered. Can't read the model plate? our guide to finding your model number shows exactly where it lives on each lift type, and we are a phone call away if you would rather have us confirm it.
Signs of an electrical fault
Check the push-button or control switch for hold-to-run behavior and clean action. The lift should move only while the button is held and stop the instant it's released. A button that sticks, that runs on after release, or that needs several presses to make contact is worn or damaged. Because the control is a safety part, a switch that won't reliably stop the lift is a replace-now item.
Parts commonly replaced at the same time
Order the companions for an electrical repair by voltage and phase, not by guess. Control components share a circuit and a service life, so replacing the obvious failure while checking the related parts keeps the lift reliable. Give us the data-plate details and we will match the set.
Safety notes
Treat every lift electrical job as live until you have locked out and tested for zero voltage. Contactors, switches, and relays sit in the safety chain; get one wrong and an interlock stops protecting anyone. Follow the wiring diagram for your production year exactly, and hand off anything you are unsure of.
Before you order
Get the electrical order right by the numbers: model, serial, voltage, and phase, all from the data plate. Components differ between single- and three-phase builds of the same lift. Have the old part's ratings handy and we will confirm the right one before it ships.
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 electrical control component from Auto Lift Services
We install, inspect, and repair automotive lifts every week — the ALS-7004-43 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.
About this 4477 spx stone
Sourcing the correct 4477 spx stone is not the spot a shop wants to gamble. This piece sits inside a load path the lift manufacturer engineered to specific tolerances, and a substitute that looks close but is off by even a small margin can transfer load onto a neighboring component that was not designed for it. We stock this exact part to the OEM specification the original manufacturer publishes, which is why techs who have been through a bad aftermarket cycle keep coming back to us for the same replacement whenever their next need comes up.
Technical specification & installation notes
Cycle life on this piece depends heavily on operating conditions. In a typical commercial repair shop running 6-10 lifts per day, the 4477 spx stone should deliver five to eight years of service before showing measurable wear against the OEM inspection specification. In a high-volume tire or alignment shop running 20+ lifts per day per bay, expect service every three to five years. It is designed to be a serviceable component; when it does wear it wears within safe operating margins that trigger visible symptoms — drift, uneven wear, minor leakage — well before failure becomes a safety issue.
Shipping & ordering
Freight covers the continental United States on all standard orders. We ship UPS or FedEx ground for parts under 30 lb; heavier assemblies quote at published carrier rates. International orders on the 4477 spx stone require a freight quote — email dimensions, weight, and destination country to [email protected] and we return a rate within one business day. Alaska, Hawaii, and US territories quote at published rates and typically take five to ten business days depending on carrier and destination.
Warranty coverage
Consumables and wear parts like this are covered under the manufacturer defect warranty for twelve months. Because the 4477 spx stone is a component that eventually needs replacement in normal operation, warranty coverage specifically addresses failure due to manufacturing defect, not failure due to normal end-of-life wear. Our team can help distinguish between the two on a phone call if there is any question after installation — call 800-674-9302 and describe the failure pattern; we will tell you honestly whether it looks like a warranty case.
Cross-reference & fitment
Fitment on the 4477 spx stone is verified against the lift serial number when the order comes in. Even inside one manufacturer's catalog, a lift model built in one production year can carry subtle revisions from the same model built two or three years later. Sending us the lift serial number when you place the order — either in the order notes or in a follow-up email — lets us verify the piece against that specific serial's parts list. That five-minute step catches revision mismatches before shipping and prevents the delay of an incorrect delivery.
Questions about the 4477 spx stone? Call our parts desk at 800-674-9302 or email [email protected]. We ship nationwide from our Iowa warehouse and answer fitment questions within one business day.
SPX Stone 4477-AB 3 phase Turnstyle switch
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