HySecurity MX3687-02, Pump Pack, 4.0 GPM, M30/M50 NP, 12 - 18 ft
The HySecurity MX3687-02 is a 4.0 GPM pump pack for select HySecurity / Nice HySecurity StrongArm M30 and StrongArm M50 NP no-power barrier arm applications with 12-18 ft clear openings. This pump pack is part of the StrongArm M30/M50 no-power hydraulic panel and should be matched to the exact operator configuration before ordering.
In the no-power system, the pump pack works with the hand crank, gearbox, couplers, manifold assembly, reservoir, check valve, manual bypass valve, flow control valve, relief valve, hoses, fittings, and hydraulic fluid. Because the pump pack is tied to arm length and hydraulic circuit configuration, it should not be substituted with a different flow rate or fluid-version pump pack unless the current HySecurity parts diagram confirms the replacement.
What This Pump Pack Does
The MX3687-02 pump pack provides hydraulic pumping capacity for compatible StrongArm M30/M50 NP no-power systems. In a properly configured system, it supports manual hydraulic operation through the no-power hand-crank and hydraulic panel arrangement.
The 4.0 GPM flow rate and 12-18 ft clear opening designation are important. Shorter and longer no-power barrier configurations may use different pump pack versions. Using the wrong pump pack can affect manual operation, release behavior, lowering behavior, arm control, or long-term service reliability.
Compatible With
This pump pack may be used with the following applications where the current HySecurity parts diagram confirms MX3687-02:
- Select HySecurity StrongArm M30 NP no-power barrier arm applications with 12-18 ft clear openings
- Select HySecurity StrongArm M50 NP no-power barrier arm applications with 12-18 ft clear openings
- StrongArm M30/M50 no-power hydraulic panel repairs where the parts diagram lists MX3687-02
- Repairs where the original pump pack is marked, listed, or cross-referenced as MX3687-02
- Applications using the matching no-power manifold, reservoir, gearbox, hand crank, couplers, hoses, valves, fittings, and standard hydraulic fluid configuration
Important: Do not assume MX3687-02 fits every StrongArm M30/M50 unit. This part is for NP no-power configurations and is sized for 12-18 ft clear openings. Powered models, longer openings, biodegradable-fluid configurations, and other StrongArm families may use different pump packs.
Similar Parts That Are Not Interchangeable
StrongArm M30/M50 no-power pump packs are configuration-specific. Flow rate, clear opening, fluid type, coupler, pump arrangement, manifold connection, and hydraulic circuit layout all matter.
| Part Number | Common Description | Interchangeability Note |
| MX3687-02 | 4.0 GPM pump pack for StrongArm M30/M50 NP, 12-18 ft | Correct where MX3687-02 is listed for the 12-18 ft no-power configuration |
| MX3687-01 | 3.1 GPM pump pack for StrongArm M30/M50 NP, 20-24 ft | Longer clear-opening version; not the same as MX3687-02 |
| MX3688-02 | Biodegradable pump pack for StrongArm M30/M50 NP, 12-18 ft | Biodegradable-fluid version; verify fluid type before substituting |
| MX3688-01 | Biodegradable pump pack for StrongArm M30/M50 NP, 20-24 ft | Different clear-opening and fluid configuration; not the same part |
| MX3689 | No-power manifold assembly | Related hydraulic manifold, not the pump pack |
Not Intended For
- StrongArm M30/M50 powered models unless the current HySecurity parts diagram specifically lists MX3687-02
- StrongArm M30/M50 NP systems with 20-24 ft clear openings that require the longer-opening pump pack
- Biodegradable-fluid configurations requiring MX3688-series pump packs
- StrongArmPark, StrongArm 36, StrongArm DOT, or other barrier arm systems
- SlideDriver, SlideSmart, SwingSmart, SwingRiser, HydraSwing, HydraWedge, bollard, or wedge applications
- Generic hydraulic pump replacement outside confirmed StrongArm M30/M50 NP applications
- Repairs where the issue is caused by the manifold, valves, reservoir, hand crank, gearbox, couplers, hoses, fittings, fluid contamination, or mechanical arm binding instead of the pump pack
Important Compatibility Warning
The MX3687-02 pump pack is tied to StrongArm M30/M50 NP no-power systems with 12-18 ft clear openings. Do not select this pump pack based only on the StrongArm model name. The clear opening, no-power configuration, hydraulic fluid type, pump flow rate, coupler, manifold, reservoir, and hydraulic circuit must match.
If the no-power system is hard to crank, will not move the arm, lowers incorrectly, leaks, or will not hold position, do not assume the pump pack is the only failed part. Check the no-power manifold, check valve, manual bypass valve, flow control valve, relief valve, reservoir, fluid condition, hand crank, gearbox, couplers, hoses, fittings, and arm mechanics before replacing the pump pack.
Features & Specifications
| Feature / Specification | Details |
| Manufacturer | HySecurity / Nice HySecurity |
| Part Number | MX3687-02 |
| Product Type | Hydraulic pump pack |
| Flow Rate | 4.0 GPM |
| Common Description | Pump Pack, 4.0 GPM, M30/M50 NP, 12-18 ft |
| Common Operator Family | Select HySecurity StrongArm M30/M50 no-power models where specified |
| Clear Opening | 12-18 ft applications where listed by HySecurity |
| System Type | NP / No Power hydraulic panel |
| Related System Components | No-power manifold, reservoir, valves, hand crank, gearbox, couplers, hoses, fittings, and hydraulic fluid should be verified during service |
| Package Contents | Pump pack assembly; confirm included coupler, fittings, seals, mounting hardware, and current package contents before ordering |
Also Known As / Related Part Numbers
- MX3687-02
- MX368702
- MX-3687-02
- HySecurity MX3687-02
- Nice HySecurity MX3687-02
- HYS-MX3687-02
- HYS MX3687-02
- HySecurity Pump Pack, 4.0 GPM, M30/M50 NP, 12-18 ft
- HySecurity Pump Pack, StrongArm M30/M50 NP, 12-18 ft
- StrongArm M30/M50 NP 4.0 GPM Pump Pack
- StrongArm No-Power Pump Pack, 12-18 ft
- MX3687-01 - related 20-24 ft standard-fluid pump pack, not the same clear-opening configuration
- MX3688-02 - related 12-18 ft biodegradable pump pack, not the same fluid configuration
- MX3688-01 - related 20-24 ft biodegradable pump pack, not the same clear-opening or fluid configuration
- MX3689 - related no-power manifold assembly, not the pump pack
- MX3684 - related 3:1 right-angle gearbox, not the pump pack
- MX3691 - related hand crank, not the pump pack
- MX3692 - related keyed coupler, not the pump pack
Related Parts and Accessories
- MX3689 no-power manifold assembly where hydraulic control or release behavior is the issue
- MX3684 3:1 right-angle bevel gearbox for the no-power hand-crank drive path
- MX3691 10 inch L square drive hand crank for no-power operation
- MX3692 5/8 x 5/8 inch keyed coupler for the NP hydraulic panel
- MX002054 motor coupler where used in the no-power drive arrangement
- MX000161 4-quart reservoir where the reservoir is damaged or contaminated
- MX000352 check valve, MX001255 manual bypass valve, MX001258 flow control valve, and MX000174 relief valve where listed separately in the parts diagram
- Hydraulic hoses, fittings, seals, and approved hydraulic fluid matched to the StrongArm M30/M50 NP system
Technician Note
Before replacing the MX3687-02 pump pack, inspect the complete StrongArm M30/M50 no-power hydraulic panel. A hard-to-crank system, slow arm movement, no movement, poor hold position, leakage, or inconsistent lowering may be caused by valve problems, contaminated fluid, air in the hydraulic circuit, hose restrictions, reservoir issues, coupler damage, gearbox resistance, hand-crank problems, or mechanical arm binding.
Clear opening matters. This pump pack is listed for 12-18 ft no-power applications. If the arm is a longer 20-24 ft configuration, or if the operator uses biodegradable hydraulic fluid, the correct pump pack may be different.
Before Ordering, Confirm
- The original or required part number is MX3687-02.
- The operator is a HySecurity StrongArm M30 NP or StrongArm M50 NP no-power model.
- The clear opening is 12-18 ft.
- The hydraulic system uses the standard-fluid MX3687-series pump pack, not the biodegradable MX3688-series version.
- The current HySecurity parts diagram lists MX3687-02 for the pump pack position.
- The motor coupler, gearbox, hand crank, manifold, reservoir, hoses, fittings, and valves match the original NP configuration.
- The issue is not caused by the manifold, check valve, manual bypass valve, flow control valve, relief valve, hose restriction, contaminated fluid, low fluid, air in the system, gearbox, coupler, or arm binding.
- The package contents include the coupler, fittings, seals, and hardware needed for the repair, or related parts are being ordered separately.
- The system has not been modified with non-original hydraulic components, hose routing, or no-power drive hardware.
Installation and Service Notes
- Disconnect power where applicable and follow proper lockout procedures before servicing the barrier operator.
- Relieve hydraulic pressure according to the operator service procedure before removing hoses, pump pack components, or valve assemblies.
- Mark all hydraulic hoses and ports before disassembly to prevent crossed lines during installation.
- Cap or protect open hydraulic ports and hoses to keep dirt, water, and debris out of the system.
- Use only the correct fittings, seals, couplers, and hydraulic fluid for the StrongArm M30/M50 NP hydraulic circuit.
- Do not adjust or defeat relief valves, bypass valves, flow controls, or pressure controls without following HySecurity service procedures.
- After installation, check for leaks, smooth hand-crank operation, controlled no-power release, arm lowering behavior, and proper hold position.
- Test all required safety devices, vehicle detection, access-control inputs, and operator protections before returning the barrier to service.
Professional Advisory
The MX3687-02 is a hydraulic pump pack used in a StrongArm M30/M50 no-power barrier system. Service should be performed by a qualified gate technician when the repair involves hydraulic pressure, pump pack replacement, manual release behavior, gravity lowering, valve diagnosis, flow control adjustment, heavy barrier arm movement, or unknown prior modifications.
Do not bypass hydraulic controls, relief valves, manual bypass valves, flow controls, vehicle detection, controller protections, safety devices, disconnects, or barrier safeguards to keep the system operating. If the barrier arm lowers unpredictably, will not hold position, binds, leaks, or cannot be controlled safely, the system should be inspected before continued use.
Product Questions & Answers
What is the HySecurity MX3687-02?
The HySecurity MX3687-02 is a 4.0 GPM pump pack used on select StrongArm M30/M50 NP no-power barrier arm applications with 12-18 ft clear openings.
What does NP mean on MX3687-02?
NP means No Power. In this application, it refers to the StrongArm M30/M50 no-power hydraulic panel used for manual hydraulic operation without normal electrical power.
Does MX3687-02 fit both StrongArm M30 NP and M50 NP?
Yes, MX3687-02 is listed for StrongArm M30/M50 no-power models where the clear opening is 12-18 ft and the current parts diagram confirms this pump pack.
Is MX3687-02 the same as MX3687-01?
No. MX3687-02 is for 12-18 ft no-power applications. MX3687-01 is the related pump pack for 20-24 ft no-power applications.
Is MX3687-02 the biodegradable pump pack version?
No. MX3687-02 is the standard pump pack version for 12-18 ft applications. The related biodegradable-fluid version is MX3688-02.
Can I use MX3687-02 on a 20-24 ft opening?
No. MX3687-02 is listed for 12-18 ft no-power applications. A 20-24 ft StrongArm M30/M50 NP setup should be checked for the correct longer-opening pump pack.
Should a technician install the MX3687-02 pump pack?
Yes. This repair involves hydraulic pressure, no-power release behavior, pump pack service, and heavy barrier arm movement, so it should be handled by a qualified gate technician.
