HySecurity MX4191, Pump Pack, SlideDriver 50VF2/3, 60/50Hz
The HySecurity MX4191 is a replacement hydraulic pump pack for select HySecurity and Nice HySecurity SlideDriver 50VF2/3 hydraulic slide gate operators. It is commonly listed as Pump Pack, SlideDriver 50VF2/3, 60/50Hz and current listings describe it as a 4.0 GPM pump pack for compatible SlideDriver 50VF2/3 systems.
HySecurity replacement pump pack documentation separates the SlideDriver 50VF2/3 pump pack by production generation. MX4191 is commonly referenced for post-June 2017 SlideDriver 50VF2/3 models, while MX001977 is commonly referenced for pre-June 2017 models. This difference matters because pump pack layout, pressure sensor configuration, valve options, hose routing, and quick disconnect size may not be the same between generations.
The pump pack is the hydraulic power section of the SlideDriver operator. In compatible SlideDriver 50VF2/3 operators, the electric motor drives the pump pack so hydraulic pressure and flow can be delivered through the manifold, valves, hoses, quick disconnects, hydraulic motor, and drive system. When the pump pack is worn, damaged, leaking, contaminated, or unable to build proper pressure, the operator may move weakly, stall under load, chatter, coast, start harshly, stop poorly, or fail to move the gate.
What This Pump Pack Does
The MX4191 pump pack supplies hydraulic pressure for compatible SlideDriver 50VF2/3 gate operator systems. It works with the electric motor, motor-to-pump coupler, reservoir, valves, relief valve, hose kit, quick disconnects, hydraulic motor, drive wheels, pressure sensor components where used, and controller logic to move and stop the gate correctly.
This is a replacement pump pack, 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 electric motor, stripped motor coupler, leaking hose kit, damaged hydraulic motor, worn drive wheels, bad controller output, poor gate alignment, or a gate that is dragging or oversized for the operator.
Compatible With
The HySecurity MX4191 is intended for select HySecurity / Nice HySecurity SlideDriver 50VF2/3 hydraulic slide gate operators where this pump pack is listed as the correct replacement. Compatibility depends on the operator model, serial number, production date, electric motor, motor coupling, hose kit, quick disconnects, valve arrangement, reservoir configuration, pressure sensor layout, and current HySecurity parts documentation.
- Select HySecurity SlideDriver 50VF2 applications where MX4191 is specified
- Select HySecurity SlideDriver 50VF3 applications where MX4191 is specified
- Select post-June 2017 SlideDriver 50VF2/3 models where HySecurity documentation lists MX4191
- Select SlideDriver 50VF2/3 hydraulic systems using the matching 4.0 GPM, 60/50Hz pump pack configuration
- Select later-generation SlideDriver 50VF2/3 applications using the matching 1/4-inch quick disconnect layout
- Operator repairs where the original pump pack is marked, listed, or cross-referenced as MX4191
Do not assume MX4191 fits every HySecurity SlideDriver or SlideDriver II operator. HySecurity lists different replacement pump packs for different SlideDriver models and production generations, and those pump packs should not be treated as interchangeable without checking the parts diagram.
How MX4191 Differs From Other SlideDriver Pump Packs
HySecurity SlideDriver pump packs are model-specific. MX4191 should be used for SlideDriver 50VF2/3 applications only where the parts documentation confirms the fit.
- MX4191: Pump Pack, SlideDriver 50VF2/3, 60/50Hz, commonly referenced for post-June 2017 models.
- MX001977: Pump Pack, SlideDriver 50VF2/3, 60/50Hz, commonly referenced for pre-June 2017 models.
- MX001943: Pump Pack, SlideDriver 15.
- MX001944: Pump Pack, SlideDriver 40.
- MX001979: Pump Pack, SlideDriver 30F/40F.
- MX4187: Pump Pack, SlideDriver 80.
- MX001981: Pump Pack, SlideDriver 200.
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 operator model name.
MX4191 vs. MX001977 Production Date Warning
MX4191 and MX001977 are both associated with SlideDriver 50VF2/3 pump pack replacement, but HySecurity separates them by production date and pump pack configuration.
- MX4191: For post-June 2017 SlideDriver 50VF2/3 models where specified.
- MX001977: For pre-June 2017 SlideDriver 50VF2/3 models where specified.
Before ordering, confirm the operator serial number and production date. If the pump pack was replaced before, inspect the actual installed pump pack, valve options, quick disconnect size, pressure sensor layout, and hose routing before choosing the replacement.
Related SlideDriver 50VF2/3 Parts
SlideDriver 50VF2/3 hydraulic repairs often involve more than one component. Check the full system before deciding whether the pump pack is the correct repair.
- MX001977: Earlier SlideDriver 50VF2/3 pump pack reference for pre-June 2017 applications where specified
- MX4289: 3/8-inch hose kit with quick disconnects for select SlideDriver 50VF2/3 and SlideDriver 80 applications
- MX000143: Braking manifold assembly / brake kit for select SlideDriver 50VF2/3, 80, and 200 applications where specified
- MX001276: Face down AWOG soft-start manifold kit where soft-start behavior is being serviced
- MX000618: Face down AWOG hose assembly where the AWOG hose is the failed component
- MX000686: 3/8-inch reservoir breather cap where the reservoir breather is missing or damaged
- MX000201: 1/4-inch female quick disconnect socket where the larger socket is the failed component
- MX001106: 2000 PSI hydraulic pressure gauge kit where pump output needs to be tested during diagnosis
Not Intended For
- Universal HySecurity hydraulic pump pack replacement
- Pre-June 2017 SlideDriver 50VF2/3 applications that require MX001977
- SlideDriver 15 applications that require MX001943
- SlideDriver 40 applications that require MX001944
- SlideDriver 30F/40F applications that require MX001979
- SlideDriver 80 applications that require MX4187
- SlideDriver 200 applications that require MX001981
- Replacing the electric motor unless the motor is specifically included or ordered separately
- Replacing hydraulic motors, hose kits, drive wheels, controller boards, limit assemblies, or safety devices unless those parts are separately specified
- Correcting low pressure caused by a dragging gate, worn drive wheels, leaking hoses, bad hydraulic motor, incorrect relief setting, or contaminated fluid without diagnosis
Important Compatibility Warning
MX4191 should be selected by HySecurity part number, SlideDriver 50VF2/3 model documentation, production date, and the installed hydraulic configuration. Pump packs are not universal. Motor alignment, pump shaft design, coupling style, quick disconnect orientation, valve layout, reservoir setup, pressure sensor layout, and hose routing must match the operator.
If the original pump pack failed, diagnose the cause before installing the replacement. A seized or overloaded system, contaminated hydraulic fluid, incorrect motor coupling installation, damaged quick disconnects, relief valve issues, dragging gate, or repeated overheating can shorten the life of a new pump pack.
Features & Specifications
| Feature / Specification | Details |
| Manufacturer | HySecurity / Nice HySecurity |
| Part Number | MX4191 |
| Product Type | Replacement hydraulic pump pack |
| Common Description | Pump Pack, SlideDriver 50VF2/3, 60/50Hz |
| Flow Rate Reference | 4.0 GPM commonly listed |
| Frequency Reference | 60/50Hz commonly listed |
| Primary Application | Select HySecurity SlideDriver 50VF2/3 hydraulic slide gate operators |
| Production Date Note | Commonly referenced for post-June 2017 SlideDriver 50VF2/3 models |
| Earlier Pump Pack Reference | MX001977 is listed separately for pre-June 2017 SlideDriver 50VF2/3 models |
| System Area | Hydraulic pump pack / hydraulic power section |
| Function | Provides hydraulic pressure and flow for compatible SlideDriver 50VF2/3 operator movement |
| Motor Coupler Note | Current listings commonly state that the motor coupler is included; verify current supplier package before publishing as guaranteed |
| Quick Disconnect Note | Current listings commonly state that two 1/4-inch quick disconnects are included; verify current supplier package before publishing as guaranteed |
| Related Pump Pack References | HySecurity lists separate pump packs for SlideDriver 15, 40, 30F/40F, 80, 200, and pre-June 2017 50VF2/3 models; do not substitute without parts confirmation |
| Installation Reference | HySecurity replacement pump pack instructions reference motor coupling, motor shaft key, breather cap, quick disconnects, threadlocker, anti-seize, and pump pack configuration checks during service |
| Included Items | Pump pack; verify motor coupler, two 1/4-inch quick disconnects, breather cap, motor shaft key, valves, reservoir, fittings, threadlocker, anti-seize, instructions, and hydraulic fluid requirements against the current supplier package |
| Not Included Unless Listed | Electric motor, hydraulic motors, hose kit, drive wheel kit, controller board, hydraulic fluid, batteries, power supply, and operator hardware unless separately listed |
Also Known As / Related Part Numbers
- MX4191
- HySecurity MX4191
- Nice HySecurity MX4191
- HySecurity Pump Pack, SlideDriver 50VF2/3, 60/50Hz
- HySecurity SlideDriver 50VF2/3 pump pack
- HySecurity SlideDriver 50VF2 pump pack
- HySecurity SlideDriver 50VF3 pump pack
- HySecurity SlideDriver 50VF2/3 hydraulic pump pack
- HySecurity 4.0 GPM pump pack
- HySecurity 60/50Hz SlideDriver pump pack
- HySecurity post-June 2017 SlideDriver 50VF2/3 pump pack
- HySecurity post-2017 X3 SlideDriver 50VF2/3 pump pack
- HYS-MX4191, related distributor SKU format
- MX001977, related pre-June 2017 SlideDriver 50VF2/3 pump pack, not the same part
- MX001943, related SlideDriver 15 pump pack, not the same part
- MX001944, related SlideDriver 40 pump pack, not the same part
- MX001979, related SlideDriver 30F/40F pump pack, not the same part
- MX4187, related SlideDriver 80 pump pack, not the same part
- MX001981, related SlideDriver 200 pump pack, not the same part
Related Parts and Accessories
- mx001977-pump-pack-slidedriver-50vf2-3.html">HySecurity MX001977 pump pack where the operator is a pre-June 2017 SlideDriver 50VF2/3 model
- mx4289-3-8-inch-hose-kit-slidedriver.html">HySecurity MX4289 3/8-inch hose kit with quick disconnects for select SlideDriver 50VF2/3 and SlideDriver 80 applications
- mx000143-braking-manifold-assembly-slidedriver-50vf-80-200.html">HySecurity MX000143 braking manifold assembly / brake kit for select SlideDriver 50VF2/3, 80, and 200 applications where specified
- mx001276-face-down-awog-soft-start-manifold-kit.html">HySecurity MX001276 face down AWOG soft-start manifold kit where soft-start behavior is being serviced
- mx000618-face-down-awog-hose-assembly.html">HySecurity MX000618 face down AWOG hose assembly where the AWOG hose is the failed component
- mx000686-3-8-inch-hydraulic-reservoir-breather-cap.html">HySecurity MX000686 3/8-inch breather cap where the reservoir breather is missing or damaged
- mx000201-1-4-inch-female-quick-disconnect-socket.html">HySecurity MX000201 1/4-inch female quick disconnect socket where the larger socket is the failed component
- Motor-to-pump coupler and motor shaft key where coupling wear or alignment issues are present
- Hydraulic pressure gauge kit where pump output needs to be tested during diagnosis
- Hydraulic fluid specified by the current HySecurity operator manual
- Drive wheel and gate hardware components where poor gate movement is overloading the hydraulic system
Technician Note
A pump pack should not be replaced just because a SlideDriver 50VF2/3 is weak, noisy, or will not move. First check the gate movement, drive wheels, hydraulic fluid level and condition, hose leaks, quick disconnects, hydraulic motor, brake manifold, relief valve behavior, motor output, motor coupler, and controller command. A good pump pack can look bad when the gate is dragging, the coupler is stripped, or the hydraulic system has a leak outside the pump pack.
Pay close attention to the post-June 2017 fitment note. MX4191 is not the same as MX001977, and the wrong pump pack can create installation, hose routing, valve option, pressure sensor, quick disconnect size, or hydraulic performance issues.
Before Ordering, Confirm
- Confirm the needed HySecurity part number is MX4191.
- Confirm the operator is a compatible HySecurity SlideDriver 50VF2/3 hydraulic slide gate operator.
- Confirm the operator model, serial number, and production date.
- Confirm whether the operator is a post-June 2017 configuration where MX4191 is specified.
- Confirm the parts diagram lists MX4191 as the correct pump pack.
- Confirm the operator does not require MX001977, the pre-June 2017 SlideDriver 50VF2/3 pump pack.
- Confirm the operator does not require a different SlideDriver pump pack such as MX001943, MX001944, MX001979, MX4187, or MX001981.
- Confirm the existing electric motor, motor coupler, and pump shaft configuration match the replacement pump pack.
- Confirm the hose kit, quick disconnects, valve layout, reservoir setup, pressure sensor layout, and pump pack mounting match the installed operator.
- Confirm the hydraulic issue is not caused by the hydraulic motor, hose kit, brake manifold, relief valve, drive wheels, controller output, or gate drag.
- Confirm whether motor coupler, two 1/4-inch quick disconnects, breather cap, motor shaft key, valves, reservoir, fittings, threadlocker, anti-seize, instructions, and hydraulic fluid are included or must be ordered separately.
- Confirm the gate rolls freely and is not dragging, binding, sagging, or oversized for the operator.
Installation and Service Notes
Hydraulic pump pack replacement should be done with the operator disabled, the gate secured, and the hydraulic system handled according to the current HySecurity service procedure. Keep dirt, water, metal shavings, and debris out of open hydraulic fittings. Contamination can damage the new pump pack, valves, hydraulic motors, seals, and quick disconnects.
During installation, compare the replacement pump pack to the original before final assembly. Confirm motor coupling fit, motor shaft key placement, quick disconnect routing, breather cap location, valve layout, pressure sensor layout, and mounting alignment. After installation, check hydraulic fluid level, inspect for leaks, verify pressure response, confirm smooth gate movement, and test all safety devices.
Professional Advisory
Replacing a SlideDriver 50VF2/3 pump pack involves hydraulic pressure, moving gate parts, rotating motor/pump components, pinch points, electrical power, and pressure-rated fittings. A qualified HySecurity gate technician should handle this repair when the operator has repeated hydraulic failures, unknown prior repairs, heavy gate loading, electrical issues, or unclear leak/pressure symptoms.
Do not bypass covers, guards, limits, monitored entrapment protection, photo eyes, safety edges, pressure controls, disconnects, or controller protections to make the operator run. The pump pack and hydraulic system should be repaired correctly and fully tested before the gate is returned to service.
Product Questions & Answers
What is the HySecurity MX4191 used for?
The HySecurity MX4191 is a replacement hydraulic pump pack for select post-June 2017 HySecurity SlideDriver 50VF2/3 gate operators where the parts diagram lists this pump pack.
What flow rate is MX4191 commonly listed with?
Current listings commonly describe MX4191 as a 4.0 GPM pump pack for compatible SlideDriver 50VF2/3 systems.
Does MX4191 include the motor coupler?
Current listings commonly state that MX4191 includes a motor coupler. Confirm current supplier package contents before ordering if the coupler, quick disconnects, fittings, or service hardware are required.
Does MX4191 include quick disconnects?
Current listings commonly state that MX4191 includes two 1/4-inch quick disconnects. Verify current package contents before publishing or ordering based on included hardware.
Is MX4191 the same as MX001977?
No. HySecurity documentation lists MX4191 for post-June 2017 SlideDriver 50VF2/3 models and MX001977 for pre-June 2017 SlideDriver 50VF2/3 models. They should not be treated as interchangeable.
What should I check before replacing the pump pack?
Check gate movement, hydraulic fluid level and condition, hoses, quick disconnects, motor coupler, electric motor, hydraulic motor, brake manifold, relief valve, drive wheels, and controller output before assuming the pump pack is the failed part.
