Moyno® L4 Pump Parts
OEM-compatible replacement parts for the L4 Drive End and supported 1L4, 2L4, 3L4 pump frames.
Use the complete frame size, type designation, serial number and trim code to select the correct drive-end components, rotor and stator.
L4 Drive End Engineering Overview
The L4 page is organized around the original L-Frame drive-end parts structure. Drive-end components are selected from the pump type designation, while rotor and stator references are selected by complete frame size. Related M- and P-frame configurations can share this drive end where the pumping element size has been adapted to a larger drive end.
Pin-Joint Drive Train
Inspect the drive shaft, pins, connecting rod and retaining hardware as a system during overhaul.
Model and Material Identification
The complete nameplate designation matters because materials of construction and sealing arrangements affect the applicable part number.
Rotor and Stator Selection
Confirm the complete frame and material configuration before matching rotor and stator references.
L4 Engineering Data
| Pump Family | Moyno® L-Frame |
| Drive End | L4 |
| Primary Frames | 1L4, 2L4, 3L4 |
| Related Configurations | 3M3, 6M3, 3P2, 6P2, 9P2 |
| Joint Design | Pin joint |
Commonly Stocked L4 Replacement Parts
These components are commonly stocked or regularly manufactured for supported Moyno® L4 L-Frame pumps. Inventory changes daily; contact ACCA Pumps to confirm current availability and lead time.
Rotor
Commonly Stocked
OEM-compatible rotors for supported configurations; material and finish vary by application.
Stator
Commonly Stocked
Replacement stators in application-appropriate elastomer and construction options.
Bearing Kit
Commonly Stocked
Drive-end bearing service components for planned maintenance and rebuilds.
Pin Joint Components
Commonly Stocked
Pins, retainers, connecting-rod hardware and related drive-train components.
Drive Shaft
Commonly Stocked
OEM-compatible replacement drive shafts for supported L-Frame configurations.
Packing Components
Commonly Stocked
Packing, lantern-ring and stuffing-box service components where applicable.
Mechanical Seals
Available on Request
Seal selection depends on pump model, shaft arrangement and process requirements.
Complete Replacement Pumps
Built to Order
Complete OEM-compatible progressive cavity pump assemblies for supported installations.
If your pump is down, send the complete model, serial number and OEM part number when available. ACCA can help confirm the correct replacement and discuss current availability or expedited shipment options.
Before You Order L4 Parts
Provide frame size, type designation, serial number, trim code and OEM part number when available. Do not select a component by appearance alone.
Supported L4 Frame Configurations
3M3, 6M3, 3P2, 6P2, 9P2
L4 Drive End Replacement Parts
The table consolidates OEM part numbers documented for this drive-end family. Where multiple part numbers are shown, the correct reference depends on material/type designation or pump configuration.
| Ref. | Component Description | ACCA Part Number | OEM Part Number | Notes |
|---|---|---|---|---|
| A | Ball Bearing (Radial) | A-A04291 | A04291 | Confirm complete model, type designation and material configuration. |
| B | Ball Bearing (Thrust) | A-A04301 | A04301 | Confirm complete model, type designation and material configuration. |
| C | Bearing Spacer | A-A04331 | A04331 | Confirm complete model, type designation and material configuration. |
| D | Bearing Lock Nut | A-A04581 | A04581 | Confirm complete model, type designation and material configuration. |
| E | Bearing Lock Washer | A-A04591 | A04591 | Confirm complete model, type designation and material configuration. |
| F | Grease Seal (Radial) | A-A04611 | A04611 | Confirm complete model, type designation and material configuration. |
| G | Grease Seal (Thrust) | A-A04621 | A04621 | Confirm complete model, type designation and material configuration. |
| H | Bearing Housing | A-A04051 | A04051 | Confirm complete model, type designation and material configuration. |
| I | Bearing Cover Plate | A-A04341 | A04341 | Confirm complete model, type designation and material configuration. |
| J | Pump Support | A-A04371 | A04371 | Confirm complete model, type designation and material configuration. |
| K | Shaft Collar | A-A04491 | A04491 | Confirm complete model, type designation and material configuration. |
| M | Lantern Ring | A-A04571 | A04571 | Confirm complete model, type designation and material configuration. |
| O | Support Bushing 3M3 | A-A04711 | A04711 | Confirm complete model, type designation and material configuration. |
| P | Pin Retainer | A-A04501 | A04501 | Confirm complete model, type designation and material configuration. |
| Q | Retaining Screw Washer | A-A04731 | A04731 | Confirm complete model, type designation and material configuration. |
| R | Connecting Rod Washer | A-A04531 | A04531 | Confirm complete model, type designation and material configuration. |
| S | Connecting Rod | A-B0425D A-B0425S | B0425D B0425S | Confirm complete model, type designation and material configuration. |
| T | Rotor Pin | A-B0445D A-B0445S | B0445D B0445S | Confirm complete model, type designation and material configuration. |
| U | Shaft Pin | A-B0446D A-B0446S | B0446D B0446S | Confirm complete model, type designation and material configuration. |
| V | Drive Pin Retaining Screw B 0454D | A-B0454D A-B0454S | B0454D B0454S | Confirm complete model, type designation and material configuration. |
| W | Suction Housing | A-B04021 A-B04022 A-B04026 A-B04027 | B04021 B04022 B04026 B04027 | Confirm complete model, type designation and material configuration. |
| X | Reducer 1L4, 2L4, 3L4 | A-B04091 A-B04092 A-B04096 A-B04097 | B04091 B04092 B04096 B04097 | Confirm complete model, type designation and material configuration. |
| Y | Drive Shaft | A-B04261 A-B04266 | B04261 B04266 | Confirm complete model, type designation and material configuration. |
| Z | Packing Gland | A-B0441D A-B0441S | B0441D B0441S | Confirm complete model, type designation and material configuration. |
| AA | Packing | A-B04421 A-B04425 | B04421 B04425 | Confirm complete model, type designation and material configuration. |
| BB | Packing Washer | A-B0465D A-B0465S | B0465D B0465S | Confirm complete model, type designation and material configuration. |
| CC | Adapter Bushing 3M3, 9P2 | A-B03512 A-B04511 A-B04516 A-B03517 | B03512 B04511 B04516 B03517 | Confirm complete model, type designation and material configuration. |
L4 Repair Kits
Repair kits group commonly serviced components for planned drive-end maintenance. Confirm the complete pump model and material configuration before ordering.
| Kit Description | ACCA Part Number | OEM Part Number | Includes / Notes |
|---|---|---|---|
| Bearing Kit | A-K04291 | K04291 | Bearing service kit for the L4 drive-end family. Confirm exact contents for the pump configuration. |
| Connecting Rod Kit — Carbon / Alloy Steel | A-K0425D | K0425D | Connecting-rod and pin-joint service kit for applicable D-material type designations. |
| Connecting Rod Kit — Stainless Steel | A-K0425S | K0425S | Connecting-rod and pin-joint service kit for applicable S-material type designations. |
L4 Rotor Part Numbers
| Frame | ACCA Rotor | OEM Rotor | Notes |
|---|---|---|---|
| 1L4 | A-C71041 A-C81041 | C71041 C81041 | Rotor references vary by metallurgy and rotor variation. |
| 2L4 | A-C72041 A-C82041 | C72041 C82041 | Rotor references vary by metallurgy and rotor variation. |
| 3L4 | A-C73041 A-C83041 | C73041 C83041 | Rotor references vary by metallurgy and rotor variation. |
L4 Stator Part Numbers
Complete stator part numbers are listed below with the elastomer suffix included so maintenance and purchasing teams can cross-reference the exact OEM number.
| Frame | ACCA Stator | OEM Stator | Elastomer |
|---|---|---|---|
| 1L4 | A-C4104Q | C4104Q | Nitrile (NBR) |
| 1L4 | A-C4104R | C4104R | Natural Rubber |
| 1L4 | A-C4104B | C4104B | EPDM |
| 1L4 | A-C4104F | C4104F | Fluoroelastomer (FKM) |
| 1L4 | A-C5104Q | C5104Q | Nitrile (NBR) |
| 1L4 | A-C5104R | C5104R | Natural Rubber |
| 1L4 | A-C5104B | C5104B | EPDM |
| 1L4 | A-C5104F | C5104F | Fluoroelastomer (FKM) |
| 2L4 | A-C4204Q | C4204Q | Nitrile (NBR) |
| 2L4 | A-C4204R | C4204R | Natural Rubber |
| 2L4 | A-C4204B | C4204B | EPDM |
| 2L4 | A-C4204F | C4204F | Fluoroelastomer (FKM) |
| 2L4 | A-C5204Q | C5204Q | Nitrile (NBR) |
| 2L4 | A-C5204R | C5204R | Natural Rubber |
| 2L4 | A-C5204B | C5204B | EPDM |
| 2L4 | A-C5204F | C5204F | Fluoroelastomer (FKM) |
| 3L4 | A-C4304Q | C4304Q | Nitrile (NBR) |
| 3L4 | A-C4304R | C4304R | Natural Rubber |
| 3L4 | A-C4304B | C4304B | EPDM |
| 3L4 | A-C4304F | C4304F | Fluoroelastomer (FKM) |
| 3L4 | A-C5304Q | C5304Q | Nitrile (NBR) |
| 3L4 | A-C5304R | C5304R | Natural Rubber |
| 3L4 | A-C5304B | C5304B | EPDM |
| 3L4 | A-C5304F | C5304F | Fluoroelastomer (FKM) |
Standard Stator Material Suffixes
| Suffix | Standard Elastomer |
|---|---|
| Q | Nitrile (NBR) |
| R | Natural Rubber |
| B | EPDM |
| F | Fluoroelastomer (FKM) |
Advanced Elastomer Engineering for Progressive Cavity Pumps
Every application is different, and the standard elastomer may not always be the best choice.
In addition to OEM-equivalent elastomer compounds, ACCA Pumps can manufacture stators using specialized elastomers engineered for specific operating conditions. Application-specific material selection can help improve chemical compatibility, wear resistance, service life and overall progressive cavity pump performance.
Abrasive & Solids-Bearing Service
Material options can be evaluated for wastewater sludge, mining slurries and other abrasive process streams.
Chemical Compatibility
Stator compounds can be selected around acids, caustics, hydrocarbons, polymers and other challenging process fluids.
Temperature & Process Conditions
ACCA can review fluid temperature, operating pressure and process conditions when recommending an elastomer solution.
Contact ACCA Pumps with the process fluid, operating temperature, pressure and pump model. Our engineering team can recommend a stator material for the specific application.
L4 Maintenance Recommendations
Inspect Pin-Joint Wear
Inspect pins, bores, connecting-rod ends and retaining hardware together.
Review Bearings and Seals
Inspect bearing and sealing components whenever the drive end is opened for major service.
Verify Packing Arrangement
Record packing gland, packing, lantern-ring and washer arrangement before disassembly.
Confirm Rotor/Stator Match
Use the complete frame and material specification when replacing pumping elements.
Protect Stator Installation
Use compatible assembly lubricant and protect stator threads or interfaces during installation.
Avoid Dry Running
Prime the pump with compatible process fluid before startup and confirm an open discharge path.
Frequently Asked Questions
Which pump frames are covered by the L4 page?
The primary frames are 1L4, 2L4, 3L4. Related configurations documented for the same drive-end family include 3M3, 6M3, 3P2, 6P2, 9P2.
How do I identify the correct L4 replacement part?
Use the complete frame size, type designation, serial number and trim code. Material and configuration differences can change the applicable part number.
Can I order individual pin-joint components?
Yes. Individual drive-train components are referenced where available, but all mating wear parts should be inspected during overhaul.
How should I select a rotor or stator?
Confirm the complete frame size and construction. Rotor and stator references are frame-specific and can vary by material or finish.
Does ACCA supply complete replacement pumps?
Yes. ACCA can support individual replacement parts, repair components and complete OEM-compatible pump assemblies for supported configurations.
Browse All Moyno L-Frame Models
Related Moyno Parts Resources
Moyno L-Frame Parts
Return to the L-Frame model selector.
Moyno 2000 Series Parts
Browse the separate gear-joint parts catalog.
Moyno Pump Parts
Browse the complete Moyno-compatible parts hub.
Why Choose ACCA L4 Replacement Parts?
OEM-Compatible Fit
Replacement components are selected for dimensional interchangeability with supported Moyno® L4 configurations.
Quality Materials
Material and elastomer options can be reviewed against the actual fluid, wear conditions and operating environment.
Engineering Support
ACCA can help identify parts from the model, serial number, OEM part number, nameplate photographs or existing components.
Fast Quotations
Clear model and part information helps our team provide a faster, more accurate replacement-parts quotation.
Stock & Expedited Options
Common wear items are frequently stocked or regularly manufactured. Current availability is confirmed at quotation.
Worldwide Support
ACCA supports industrial maintenance and purchasing teams in the United States and international markets.
Need Help Identifying Moyno L4 Parts?
Send the complete frame, type designation, serial number, trim code and OEM part number when available.
Trademark Disclaimer: Moyno® is a registered trademark of its respective owner. References are used solely to identify compatible equipment and replacement applications. ACCA Pumps is an independent aftermarket manufacturer and is not affiliated with or endorsed by the trademark owner.