HySecurity MX5535, Pump Pack, SlideDriver II SD40
The HySecurity MX5535 is a replacement hydraulic pump pack for select HySecurity and Nice HySecurity SlideDriver II SD40 hydraulic slide gate operators. It is commonly listed as Pump Pack, SlideDriver II SD40 and is used as the replacement pump pack assembly for compatible SlideDriver II SD40 systems.
The pump pack is the hydraulic power section of the SlideDriver II operator. In compatible SlideDriver II SD40 operators, the motor drives the pump pack so hydraulic pressure and flow can be delivered through the reservoir, valves, pressure sensor, hoses, quick disconnects, hydraulic motor, brake system, and drive assembly. When the pump pack is worn, damaged, leaking, contaminated, or unable to build proper pressure, the operator may move weakly, stall under load, chatter, stop poorly, fault, or fail to move the gate.
Current listings commonly describe MX5535 as including valves, sensors, reservoir, pump, and drive coupling. HySecuritys SlideDriver II replacement pump pack instructions also note that replacement pump packs include solenoid coils and pressure sensors. Because SlideDriver II pump packs must match the original brake assembly, valve options, and digital pressure sensor configuration, MX5535 should be selected by exact part number and operator parts documentation.
What This Pump Pack Does
The MX5535 pump pack supplies hydraulic pressure for compatible SlideDriver II SD40 gate operator systems. It works with the electric motor, drive coupling, reservoir, relief valve, solenoid valves, pressure sensor, hoses, quick disconnects, hydraulic motor, drive wheels, brake assembly, and controller logic to move and stop the gate correctly.
This is a replacement pump pack assembly, not a complete operator and not a full hydraulic system rebuild by itself. Replacing the pump pack can correct pump pack-related pressure, wear, contamination, or leakage problems, but it will not repair a failed motor, damaged drive wheel system, leaking hose kit, bad hydraulic motor, incorrect valve option, poor gate alignment, controller output issue, or a gate that is dragging or oversized for the operator.
Compatible With
The HySecurity MX5535 is intended for select HySecurity / Nice HySecurity SlideDriver II SD40 hydraulic slide gate operators where this pump pack is listed as the correct replacement. Compatibility depends on the operator model, serial number, motor configuration, pump pack layout, valve options, brake assembly, pressure sensor, hose routing, quick disconnects, and current HySecurity parts documentation.
- Select HySecurity SlideDriver II SD40 hydraulic slide gate operators where MX5535 is specified
- Select SlideDriver II SD40 pump pack replacement applications listed in HySecurity parts documentation
- Select SlideDriver II SD40 hydraulic systems using the matching pump, reservoir, valve, sensor, and drive coupling configuration
- Operator repairs where the original pump pack is marked, listed, or cross-referenced as MX5535
Do not assume MX5535 fits older SlideDriver 40 operators or other SlideDriver II models. SlideDriver II SD15, SD50F, SD80V, and SD200V applications use different pump pack references. Always verify the operator model and parts diagram before ordering.
MX5535 vs. Other SlideDriver Pump Packs
MX5535 should be kept separate from both older SlideDriver pump packs and other SlideDriver II pump packs.
- MX5535: Pump Pack, SlideDriver II SD40.
- MX5499: Pump Pack, SlideDriver II SD15, not the same part.
- MX001944: Pump Pack, older SlideDriver 40, not the same part.
- MX001943: Pump Pack, older SlideDriver 15, not the same part.
- MX001979: Pump Pack, older SlideDriver 30F/40F, not the same part.
- MX001977: Pump Pack, older SlideDriver 50VF2/3 pre-June 2017, not the same part.
- MX4191: Pump Pack, older SlideDriver 50VF2/3 post-June 2017, not the same part.
- MX4187: Pump Pack, older SlideDriver 80, not the same part.
- MX001981: Pump Pack, older SlideDriver 200, not the same part.
If the operator has had a previous pump pack replacement, motor change, hose update, pressure sensor change, or hydraulic retrofit, compare the installed pump pack configuration instead of relying only on the model name.
Related SlideDriver II SD40 Parts
SlideDriver II SD40 hydraulic repairs often involve more than one component. Check the full system before deciding whether the pump pack is the correct repair.
- MX5502: 3000 PSI pressure transducer used in SlideDriver II pump pack systems where specified
- MX002054: 5/8-inch shaft, 6T coupler used in select SlideDriver II motor and pump pack assemblies
- MX000174: 3000 PSI relief valve used in select SlideDriver II hydraulic systems where specified
- MX000686: Breather cap used on select HySecurity hydraulic reservoir applications
- MX000143: Brake kit used in select SlideDriver II hydraulic systems where specified
- MX5246: Unloader valve kit used in select SlideDriver II pump pack systems where specified
- MX5245: Directional valve kit used in select SlideDriver II hydraulic systems where specified
- MX000161: 4-quart reservoir used in select SlideDriver II pump pack systems where specified
- MX5503: Hose assembly with 1/4-inch quick disconnect fittings where the hose assembly is the failed component
Not Intended For
- Universal HySecurity pump pack replacement
- Older SlideDriver 40 applications that require MX001944
- Older SlideDriver 15 applications that require MX001943
- Older SlideDriver 30F/40F applications that require MX001979
- Older SlideDriver 50VF2/3 applications that require MX001977 or MX4191 depending on production date
- Older SlideDriver 80 applications that require MX4187
- Older SlideDriver 200 applications that require MX001981
- SlideDriver II SD15, SD50F, SD80V
Features and Specifications
| Specification | Details |
| Manufacturer | HySecurity / Nice HySecurity |
| Part Number | MX5535 |
| Gate Openers Unlimited Part Number | Hy-MX5535 |
| Product Type | Hydraulic pump pack replacement assembly |
| Common Description | Pump Pack, SlideDriver II SD40 |
| Primary Operator Family | Select SlideDriver II SD40 hydraulic slide gate operators |
| System Area | Hydraulic pump pack / hydraulic power section |
| Function | Provides hydraulic pressure and flow for compatible SlideDriver II SD40 operator movement |
| Common Included Components | Current listings commonly reference valves, sensors, reservoir, pump, and drive coupling; HySecurity instructions note replacement pump packs include solenoid coils and pressure sensors |
| Pressure Sensor Note | Replacement pump pack should include the correct pressure sensor configuration for the installed SlideDriver II model |
| Valve Option Note | Valve options must match the pump pack being removed |
| Brake Assembly Note | Brake assembly configuration should be compared to the original pump pack before installation |
| Related SlideDriver II Pump Packs | MX5499 is the SD15 pump pack and MX5536 is the SD50F / SD80V / SD200V pump pack; neither is the same as MX5535 |
| Items Not Included Unless Listed | Complete operator, electric motor, hydraulic motors, hose assemblies, drive wheels, hydraulic fluid, controller board, electrical enclosure, and safety devices unless separately listed |
Package Contents
Package contents should be verified before publishing, picking, or shipping. SlideDriver II replacement pump pack instructions identify the pump pack assembly and related components, but current supplier packaging should always be checked before promising exact contents.
- HySecurity MX5535 SlideDriver II SD40 pump pack assembly
- Solenoid coil(s), pressure sensor, motor shaft coupling, key, and set screw when supplied with the current factory replacement pack
- Valves, reservoir, pump, sensors, and pump pack components as configured for the SD40 assembly
- Hydraulic fluid, hose assemblies, electric motor, hydraulic motors, drive wheels, controller, electrical enclosure, and safety devices only if specifically listed
Also Known As / Related Part Numbers
- HySecurity MX5535
- Nice HySecurity MX5535
- MX5535
- Hy-MX5535
- HySecurity SlideDriver II SD40 pump pack
- SlideDriver II SD40 replacement pump pack
- HySecurity pump pack SD40
- MX5499 - related SD15 pump pack, not the same part
- MX5536 - related SD50F / SD80V / SD200V pump pack, not the same part
- MX001944 - older SlideDriver 40 pump pack, not the same as MX5535 unless HySecurity confirms a replacement path
Related Parts and Service Checks
Before replacing the pump pack, inspect the full SlideDriver II SD40 hydraulic and mechanical system. A suspected pump pack failure can also be caused by low hydraulic fluid, contaminated oil, damaged hoses, valve faults, pressure sensor problems, drive wheel issues, brake problems, motor coupling wear, controller output issues, or a gate that is dragging mechanically.
- Confirm the operator is a SlideDriver II SD40.
- Verify the serial number and current parts diagram before ordering.
- Compare the replacement pump pack to the pump pack being removed.
- Confirm brake assemblies match.
- Confirm the replacement pump pack is equipped with the proper digital pressure sensor.
- Confirm valve options match the original pump pack.
- Inspect hoses, quick disconnects, fittings, and possible hydraulic leaks.
- Check hydraulic fluid condition for contamination, water, foam, or metal debris.
- Inspect the motor shaft coupling, key, set screw, electric motor, drive wheels, and drive rail.
- Confirm all safety devices, loops, photo eyes, sensing edges, and warning devices remain functional.
Technician Note
HySecurity pump pack replacement should be treated as a hydraulic system repair, not just a part swap. If the old pump pack failed because of contaminated oil, incorrect pressure, a damaged hose, a bad coupling, electrical problems, or a dragging gate, the same issue can damage the replacement assembly.
Before removing hoses, label them so the operator handing and hose positions are restored correctly. Keep rags ready for fluid residue and keep all hydraulic openings clean. Dirt, metal chips, water, damaged seals, or crossed hose connections can create repeat failures or poor gate movement.
Before Ordering Checklist
- Confirm the exact part number needed is HySecurity MX5535.
- Confirm the operator is a HySecurity SlideDriver II SD40.
- Verify the operator serial number and current parts diagram.
- Do not confuse MX5535 with MX5499, MX5536, or older SlideDriver pump packs.
- Confirm the brake assembly, valve options, and digital pressure sensor match the original pump pack.
- Confirm the pump pack configuration matches the one being removed.
- Check whether hydraulic fluid, hose assemblies, fittings, or other parts are needed separately.
- Inspect hydraulic oil condition, hoses, quick disconnects, pump pack mounting, electric motor, drive coupling, drive wheels, and gate mechanics before ordering.
Installation and Service Notes
This pump pack should be installed by a qualified HySecurity gate technician or hydraulic gate operator technician. Disconnect incoming power before service and follow the HySecurity service procedure. Wear appropriate PPE, including eye protection, gloves, and safety toe shoes, and prepare for hydraulic fluid residue during removal.
After installation, test the operator through full open and close cycles. Check hydraulic leaks, hose routing, pump behavior, pressure readings, brake function, valve operation, drive wheel engagement, limits, speed, force/pressure behavior, fault history, manual release, and all connected safety devices.
Professional Advisory
A hydraulic pump pack is part of a complete gate operator system. Replacing the pump pack will not correct a gate that is dragging, leaning, hitting stops, riding on damaged wheels, running on a damaged track, or operating with failed safety devices. Do not use a replacement pump pack to force an unsafe gate to move.
Do not bypass photo eyes, safety edges, loop inputs, monitored entrapment protection, stop circuits, pressure protections, warning devices, or operator fault circuits to keep the gate running. For South Florida customers, local pickup in the Hialeah Gardens area may be available when inventory allows. Confirm part number, SD40 fitment, package contents, and stock before coming in for pickup.
Product Questions and Answers
What is the HySecurity MX5535 used for?
The HySecurity MX5535 is a replacement pump pack for select SlideDriver II SD40 hydraulic slide gate operators where the current parts documentation confirms this part number.
Is MX5535 the same as MX5499?
No. MX5535 is the SlideDriver II SD40 pump pack. MX5499 is the SlideDriver II SD15 pump pack and should not be ordered as a substitute.
Is MX5535 the same as MX5536?
No. MX5536 is used for select SlideDriver II SD50F, SD80V, and SD200V pump pack applications. MX5535 is specific to the SD40 pump pack application.
Does MX5535 fit older SlideDriver 40 operators?
Not automatically. MX5535 is a SlideDriver II SD40 pump pack. Older SlideDriver 40 operators may use older pump pack references such as MX001944, so the operator generation and parts diagram must be checked.
Does the MX5535 pump pack include solenoid coils and the pressure sensor?
HySecurity SlideDriver II replacement pump pack instructions note that replacement pump packs include solenoid coils and pressure sensors. Confirm the current package contents before ordering.
Should I transfer the old pressure sensor or solenoid coils to the new pump pack?
No, not unless the current HySecurity service procedure specifically instructs it. Replacement SlideDriver II pump packs are supplied with the pressure sensor and solenoid coil configuration intended for the pump pack.
What should be compared before installing MX5535?
Compare the old and replacement pump pack, including brake assembly, valve options, digital pressure sensor, coupling, hose connections, hydraulic layout, and the SD40 operator parts diagram before installation.
What should be checked before blaming the pump pack?
Check hydraulic fluid level and condition, hoses, quick disconnects, pressure sensor readings, valve operation, brake assembly, electric motor output, motor-pump coupling, drive wheels, gate movement, controller command, and fault history before assuming the pump pack failed.
