HySecurity MX3767, Piston, Spring Guide
The HySecurity MX3767 is the spring guide piston used inside the WedgeSmart DC spring tube assembly. It works with the compression spring, spring end guide, spring tube, and related wedge hardware to keep the counterbalance spring aligned during operation.
A worn, damaged, or binding guide piston can cause uneven spring loading, scraping, noisy travel, poor wedge movement, or accelerated wear on the spring tube assembly. Because the piston is part of a mechanical guide system, it should be inspected with the full spring tube assembly rather than treated as an isolated cosmetic part.
Use MX3767 when the parts diagram identifies the WedgeSmart DC piston, spring guide. Confirm the current operator revision and inspect MX3756 and MX3766 at the same time, since these parts work together in the same counterbalance area.
Compatible With
- HySecurity WedgeSmart DC operators where MX3767 is listed.
- WedgeSmart DC spring tube assembly service.
- WedgeSmart DC counterbalance assemblies using MX3756 compression spring and MX3766 spring end guide.
- HySecurity parts diagrams listing Piston, Spring Guide MX3767 for WedgeSmart DC models.
- Not a universal piston or guide for StrongArm, SlideDriver, SwingSmart, HydraWedge, or HydraSupply assemblies unless the official parts diagram lists MX3767.
Features & Specifications
| Manufacturer | HySecurity / Nice HySecurity |
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| Part Number | MX3767 |
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| Product Type | Spring guide piston |
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| Application | WedgeSmart DC spring tube assembly |
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| Compatible Operator Type | WedgeSmart DC where specified |
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| Related Components | MX3756 compression spring, MX3766 spring end guide, MX3760 spring tube assembly |
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| Included Components | Spring guide piston only unless otherwise supplied |
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| Notes | Inspect for binding, wear, and alignment issues |
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Also Known As / Related Part Numbers
- MX3767
- HYS-MX3767
- Nice HySecurity MX3767
- HySecurity spring guide piston
- WedgeSmart DC spring guide piston
- Piston spring guide WSMART
- Related part: MX3756 compression spring
- Related part: MX3766 spring end guide
- Related assembly: MX3760 spring tube assembly
Technician Note
A new guide piston should move correctly within the spring tube assembly. If it binds, do not force operation; check for a bent tube, damaged guide, debris, spring distortion, or incorrect assembly orientation.
Before Ordering Checklist
- Confirm WedgeSmart DC fitment by parts diagram.
- Inspect the compression spring and spring end guide at the same time.
- Check the spring tube for scoring, dents, debris, or corrosion.
- Confirm that the original problem is not caused by a bent wedge or misaligned spring tube assembly.
- Do not substitute a generic guide or piston by size alone.
Professional Advisory
Spring tube service involves stored mechanical force and moving wedge components. Use proper lockout and have a qualified gate technician perform repairs where spring preload, heavy parts, or uncertain assembly condition is involved.
Product Questions & Answers
What does MX3767 do?
MX3767 guides and supports the spring inside the WedgeSmart DC spring tube assembly so the counterbalance system operates smoothly.
Is MX3767 used with MX3756?
Yes. MX3756 is the related compression spring, and MX3767 is the guide piston used in the same spring tube assembly where specified.
Should MX3766 be checked too?
Yes. MX3766 is the spring end guide, and wear in that part can affect the same counterbalance assembly.
Does MX3767 fit all HySecurity wedge barriers?
No. It should be used only where the HySecurity parts diagram lists MX3767 for the installed operator.
What symptoms can a worn guide piston cause?
Possible symptoms include binding, scraping, uneven spring action, noisy movement, or poor wedge travel, although the full assembly should be inspected.
