CH&E 5400 Series Aluminum 2″ Diaphragm Pump & Repair Parts
These CH&E 5400 Series aluminum 2 inch diaphragm pump repair parts are manufactured to the original specifications of the CH&E 5400 Series, so every component fits correctly and your pump returns to full working condition as quickly as possible. Whether you are replacing a worn diaphragm, servicing the valve assembly, rebuilding the fluid end, or sourcing a specific drivetrain component, this page covers the complete range of genuine replacement parts available for the CH&E 5400 Series aluminum 2″ diaphragm water pump.
Ken’s Distributing Company is a repair parts specialist for CH&E pumps, Magnum Power Products Mud Hog pumps, and all diaphragm pump models across the CH&E and MCP series range. If you need help identifying the correct parts for your specific pump model, the Kendisco team can confirm compatibility before you order.
CH&E 5400 Series Aluminum 2 Inch Diaphragm Pump: Overview
The CH&E 5400 Series Aluminum 2 inch Diaphragm Pump is a self-priming, lightweight pump engineered for efficient and reliable fluid transfer across construction, agricultural, industrial, and municipal job sites. Its aluminum housing keeps the pump compact and easy to transport, making it one of the most practical portable pump options available for contractors and field operators who need to reposition equipment quickly between work areas.
The CH&E 5400 Series handles clean water, muddy water, light slurries, and solids-laden fluids without requiring manual priming between cycles. It is designed to run dry indefinitely without internal damage and automatically re-primes when seepage reappears, making it an ideal solution for seepage dewatering, septic tank cleaning, industrial waste pumping, marine tank applications, small wellpoint systems, and dewatering in sandy, muddy, or debris-filled water.
The 5400 Series is also compatible with Magnum Power Products Mud Hog diaphragm pump configurations, including the MCP 5437 and MCP 5438. Ken’s Distributing Company stocks the complete range of genuine CH&E 5400 Series aluminum repair parts. Contact Kendisco for part availability, current pricing, and expert technical support.
Key Features of the CH&E 5400 Series Aluminum 2 inch Diaphragm Pump
- Lightweight aluminum housing for easy transport and field repositioning
- 2 inch inlet and outlet ports for efficient, controlled fluid transfer
- Self-priming diaphragm design for fast, reliable startup without manual priming
- Runs dry indefinitely without damage to internal components
- Automatically re-primes when seepage reappears
- Handles clean water, muddy water, slurries, and solids-laden fluids
- Multiple diaphragm material options for broad fluid and chemical compatibility
- Compatible with gas engine, electric motor, and hydraulic motor drive configurations
- Simple, low-maintenance design engineered to reduce operational downtime
Applications and Industries Served
The CH&E 5400 Series Aluminum 2 inch diaphragm pump is trusted across a wide range of industries and job site environments. Common applications include:
- Construction: Trench dewatering, foundation drainage, and controlled site water management
- Agricultural: Irrigation support, wellpoint systems, and field drainage
- Industrial: Industrial waste pumping, process water handling, and plant maintenance
- Municipal: Bypass pumping and sewer maintenance operations
- Marine: Marine tank pumping and bilge water removal
- Sanitation: Septic tank cleaning and waste fluid transfer
- Emergency Response: Flood cleanup and storm water removal in sandy or muddy conditions
5400 Series vs. 5500 Series: 2″ vs. 3″ Diaphragm Pump
The CH&E 5400 and 5500 Series share a similar drivetrain architecture and many common internal components, but differ in port size and fluid throughput capacity. Understanding the difference helps you select the right pump and order the correct wetted-end repair parts for your model.
| Feature | 5400 Series | 5500 Series |
| Housing Material | Aluminum | Aluminum |
| Inlet/Outlet Size | 2 inch | 3 inch |
| Flow Capacity | Lower volume, controlled transfer | Higher volume, high-throughput transfer |
| Portability | Compact and lightweight | Slightly larger, still portable |
| Drive Compatibility | Gas, electric, hydraulic | Gas, electric, hydraulic |
| Best For | Controlled dewatering, agricultural, marine | High-volume construction and industrial dewatering |
CH&E 5400 Series Aluminum 2″ Diaphragm Water Pump Repair Parts List
The following parts reference covers all serviceable components in the CH&E 5400 Series Aluminum 2″ diaphragm water pump. Use the part numbers below to identify and order the correct replacement components for your pump configuration.
Wetted-End and Fluid-Handling Components
| Part Number | Description |
| P3354AY-A1 | Suction Connection & Spring Assembly – Aluminum |
| P3354AY-C2 | Suction Connection & Spring Assembly – Cast Iron |
| P3355-A1 | Discharge Connection – Aluminum |
| P3351AY-A1 | Water Box & Spring Pin Assembly – Aluminum |
| P3351AY-C2 | Water Box & Spring Pin Assembly – Cast Iron |
| P3353-A1 | Diaphragm Bottom – Aluminum |
| P3353-C2 | Diaphragm Bottom – Cast Iron |
| P3358 | Valve Weight / Flapper Weight |
| P3357 | Valve Binder / Flapper Weight |
| P3311N | Flapper – Neoprene |
| P3311B | Flapper – Buna-N |
Diaphragm Options
The CH&E 5400 Series Aluminum 2 inch diaphragm pump is available with five diaphragm material options. Selecting the correct material for your fluid type and operating environment is essential for maximizing diaphragm service life and overall pump reliability.
| Part Number | Material | Best For |
| P2231N | Neoprene | General-purpose water and light chemical applications |
| P2331B | Buna-N | Petroleum-based fluids and oils |
| P2231TPE | TPE | Potable water and food-grade applications |
| P2231R | Rubber | Abrasive slurries and general dewatering |
| P2231V | Viton | Aggressive chemical and solvent applications |
Pump Frame and Mechanical Components
| Part Number | Description |
| P3350 | Pump Frame |
| P3360 | Retaining Washer |
| P3352 | Connecting Rod |
| P5582 | Connecting Rod Bearing |
| W70-807 | Woodruff Key |
| P5584 | Crank Arm |
| W35-C12329CRW1 | Oil Seal / Lip Seal |
| 5/8″-18 UNF Jam Nut | Jam Lock Nut |
| P3691 | Crank Arm Guard |
| P4953B | Crank Arm Guard (alternate) |
Gear Case Components
| Part Number | Description |
| P4850 | Case |
| P4851 | Cover |
| P4858 | Case Gasket |
| P4859 | O-Ring |
| P4853 | Gear Shaft |
| P5058 | 79 Tooth Gear |
| P4852 | 11 Tooth Pinion |
| P3417 | 85 Tooth Internal Gear |
| H705.025.0075 | Dowel Pin 1/4″ x 3/4″ |
Bearings and Seals
| Part Number | Description |
| W16-6307 | Ball Bearing |
| W16-6304 | Ball Bearing |
| W16-6302 | Ball Bearing |
| W16-6006LLU | Ball Bearing |
| W19-TB188 | Needle Bearing |
| W63-5100-118 | Retaining Ring |
Drive Adapter and Pinion Options
The CH&E 5400 Series Aluminum 2 inch diaphragm pump is compatible with gas engine, electric motor, and hydraulic motor drive configurations. Select the correct adapter and pinion combination for your drive type and shaft specification.
| Part Number | Description |
| P4856 | Engine Adapter (Gas) |
| P4857 | Electric Motor Adapter |
| P5601 | Key 3/16″ Sq x 1″ |
| P4854 | Pinion – 14 Tooth (3/4″ Bore) |
| P4855 | Pinion – 14 Tooth (5/8″ Bore x 3/16″ K.W.) |
| P4861 | Pinion (alternate specification) |
| P5175 | Pinion (alternate specification) |
Compatible Magnum Power Products Mud Hog Models
The CH&E 5400 Series repair parts are compatible with the following Magnum Power Products Mud Hog diaphragm pump configurations. If you service any of these models, the parts listed on this page apply to your pump.
- Magnum Power Products Mud Hog MCP 5437
- Magnum Power Products Mud Hog MCP 5438
- Magnum Power Products Mud Hog MCP 5411-1
- Magnum Power Products Mud Hog MCP 5411-3
- CH&E 5411 Diaphragm Pump
- CH&E 5437 Diaphragm Pump
- CH&E 5438 Diaphragm Pump
- CH&E 5515 Series (shared drivetrain components)
Maintenance and Service Guidance
Regular inspection and timely replacement of wear components keeps the CH&E 5400 Series Aluminum 2 inch diaphragm pump performing reliably across extended service cycles. The lightweight aluminum construction makes field servicing straightforward, but the fluid-handling components require consistent attention, particularly in abrasive or high-cycle pumping conditions.
- Inspect the diaphragm and flapper assemblies after every 250 hours of operation or when pump output drops noticeably
- Select the diaphragm material that matches your fluid type. Use Viton for chemical applications, Rubber or Neoprene for abrasive dewatering, Buna-N for petroleum-based fluids, and TPE for potable water service
- Check the connecting rod bearing and grease fitting at each scheduled service interval
- Inspect the oil seal and O-ring around the gear case for signs of leakage or deterioration
- Verify the correct drive adapter and pinion are installed for your engine or motor configuration before servicing the drivetrain
- Flush the pump thoroughly with clean water after handling abrasive, chemical, or solids-laden fluids
- Store the pump with the diaphragm in a relaxed position to extend its service life between deployments
- Confirm all fasteners are correctly torqued after any disassembly or component replacement
Frequently Asked Questions
What is the CH&E 5400 Series Aluminum 2″ diaphragm pump used for?
The CH&E 5400 Series Aluminum 2 inch diaphragm pump is used for seepage dewatering, construction site drainage, septic tank cleaning, industrial waste pumping, marine tank applications, small wellpoint systems, and dewatering in sandy, muddy, or debris-filled water. Its self-priming, dry-run-safe design makes it well suited for applications where consistent unattended or intermittent operation is required.
Can the CH&E 5400 Series pump run dry without damage?
Yes. The CH&E 5400 Series Aluminum 2 inch diaphragm pump is designed to run dry indefinitely without internal damage. It also automatically re-primes when seepage reappears, making it a reliable choice for intermittent flow conditions common in seepage dewatering and wellpoint applications.
What is the difference between the CH&E 5400 Series and the 5500 Series?
The primary difference is port size. The CH&E 5400 Series is a 2 inch diaphragm pump, while the 5500 Series is a 3 inch diaphragm pump. The larger 3 inch ports on the 5500 Series deliver higher flow volumes for applications requiring greater throughput. Both series use aluminum housings and share a similar drivetrain architecture, but the wetted-end and pump-specific components differ between the two size families due to the difference in port size.
What diaphragm materials are available for the CH&E 5400 Series aluminum pump?
Five diaphragm materials are available: Neoprene for general-purpose water handling, Buna-N for petroleum-based fluids, TPE for potable water and food-grade applications, Rubber for abrasive slurry and dewatering work, and Viton for aggressive chemical and solvent applications. Matching the diaphragm material to your fluid type directly affects pump service life and reliability.
Is the CH&E 5400 Series compatible with electric motor and hydraulic motor drives?
Yes. The CH&E 5400 Series Aluminum 2 inch diaphragm pump is compatible with gas engine, electric motor, and hydraulic motor drive configurations. The correct adapter and pinion must be selected for each drive type. Use part P4856 for gas engine applications and part P4857 for electric motor configurations.
Are the CH&E 5400 Series repair parts compatible with Magnum Power Products Mud Hog pumps?
Yes. The CH&E 5400 Series repair parts are compatible with the Magnum Power Products Mud Hog MCP 5437, MCP 5438, MCP 5411-1, and MCP 5411-3 diaphragm pump configurations. If you service any of these Mud Hog models, the parts listed on this page apply directly to your pump.
Where can I buy genuine CH&E 5400 Series aluminum repair parts?
Ken’s Distributing Company stocks the complete range of genuine CH&E 5400 Series Aluminum repair parts, including diaphragms, flapper assemblies, bearings, seals, gear case components, and drive adapters. Contact Kendisco directly for part availability, pricing, and technical support on all 5400 Series components.