Franklin Electric 9 Inch Hydraulic Driven Pump & Parts

The Franklin Electric 9 Inch Hydraulic Driven Pump is an XS Series centrifugal pump for water trucks, agricultural irrigation, commercial transfer and field pumping where a compatible hydraulic motor provides the drive. The 3 × 4-inch XS439 models have a nominal 9-inch impeller family, cast-iron construction, 3-inch discharge and 4-inch suction. Choose the correct SAE B or C hydraulic fit, clockwise or counterclockwise rotation, grooved or NPT connection and packing or mechanical seal before requesting a quote from Ken’s Distributing Company.

This page covers both complete hydraulic-drive pump assemblies and genuine replacement components, including hydraulic motor mounting adapters, shaft couplings, impellers, cases, seals and shaft kits. The 6 × 8-inch XS869 also appears in the historic ordering data below, but the manufacturer now flags that complete version as no longer available. Its original model and repair-part references remain for servicing existing installations.

Franklin Electric 9 Inch Hydraulic Driven Pump Specifications

Performance selection: The published maximum head, maximum flow and maximum working pressure are separate limits, not one simultaneously achievable duty point. Check flow, head, required shaft speed and available hydraulic-motor power using the 3 × 4-9 manufacturer performance chart. The former 2,000 GPM statement should not be applied to the current XS439 hydraulic family.

How to Select a 9-Inch XS439 Hydraulic Pump

Start with required discharge flow and total dynamic head, then confirm the hydraulic motor you intend to use. The pump uses a standard hydraulic motor interface, but the hydraulic motor and the pump are not interchangeable components. A correct fit also requires an appropriate motor speed, available torque, hydraulic flow, pressure and cooling provision. Verify connection style and rotation before ordering.

• Connection: NPT threaded or grooved 3 × 4-inch XS439 volute options.
• Rotation: CW and CCW are specified as seen facing the shaft. Do not assume the installed pump turns in the same direction as a similarly named model.
• Sealing: Packed arrangements use serviceable packing; mechanical-seal assemblies use the model-specific seal and retaining hardware.
• Fit: B and C use different spline geometries, motor mounts and coupling numbers. A B-fit coupling should not replace a C-fit coupling.

XS439 Hydraulic Driven Pump Ordering Numbers

Find the exact pump by manufacturer order number and model. All 20 entries from the original catalog table are retained, including four XS869 historical references. The XS439 order numbers are also listed on Franklin Electric’s current hydraulic-driven page. Shipping weights are catalog specifications, not a shipping quotation.

Hydraulic Driven vs. SAE Engine Drive vs. Frame Mount

A hydraulic-drive pump can be a practical option when an existing truck or equipment hydraulic system supplies a properly sized hydraulic motor. An SAE engine-drive pump mounts to an engine flywheel housing, while a separate frame-mounted pump requires its own drive arrangement. Do not assume the shafts, bearing-frame parts or motor interfaces are interchangeable between versions.

XS439 Hydraulic Pump Replacement Parts and Exploded Diagram

The original parts matrix below is retained for both XS3x4-9 and the historical XS6x8-9. Identify the volute type, rotation, seal arrangement and hydraulic fit before selecting components. Part numbers can differ by size and rotation, especially for volute cases, impellers, shaft kits and some fasteners.

Older-unit bearing note: Franklin Electric’s parts catalog identifies a June 2013 bearing-frame revision. Earlier drive-side bearing assemblies used thrust ring 305462027, retaining ring 305462026 and a different lip-seal arrangement. Newer assemblies use bearing nut 305463039 and lock washer 305463042. Give the build date or a photo of the bearing assembly when ordering older-model service parts.

Common Hydraulic Motor Mounting and Coupling Parts

OEM 305462039 is the B-fit hydraulic motor mount and 305462041 is its coupling. C-fit uses 305462040 for the motor mount and 305462042 for the coupling. Hydraulic coupling set screws are listed under 305462043; the lip-seal adapter plate is 305462045. Confirm shaft and motor geometry before ordering.

Impellers, Mechanical Seals, Packing and Shaft Kits

The original exploded-parts matrix includes 305462008 for the clockwise XS439 impeller and 305462036 for counterclockwise; the historic XS869 uses 305462018. The mechanical shaft seal is listed as 305462029 and the original hydraulic-drive packing ring set as 305731917. The XS439 shaft replacement kit is 305731901; the XS869 legacy kit is 305731903. Choose by the installed pump nameplate and the exact parts breakdown.

Repair or replace? When the cast-iron casing and drive arrangement are sound, an impeller, mechanical seal, packing, shaft sleeve or bearing replacement may be sufficient. If the volute is cracked, motor fit is changing, or multiple major components are worn, ask for a quote on the appropriate available pump assembly and a separate parts quote for comparison.

XS439 Hydraulic Motor Fit and Mounting Dimensions

These original dimensions are retained for both XS439 B/C hydraulic fits and the historical XS869 configurations. Dimensions are in inches and should be checked against the existing pump and hydraulic motor before machining or fabricating an installation.

XS439 Hydraulic Pump Performance Curve

The 3 × 4-9 pump performance chart shows flow and head at different pump speeds. Use your actual motor speed and hydraulic power to select the duty point, not a single headline maximum. A 9-inch nominal designation does not mean every impeller or operating speed provides the same output.

Typical Applications and Quote Details

Suitable applications may include irrigation water transfer, water-truck filling and dust suppression, construction water management, and industrial or municipal non-potable transfer where the fluid, hydraulic drive and pump performance fit the installation. Check solids and abrasive content against the pump materials and manufacturer instructions.

Complete pump quote: Provide the model and item number if known, required GPM and total dynamic head, water source and suction conditions, 3 × 4 connection type, CW/CCW direction, preferred packing or mechanical seal, and hydraulic motor data including SAE fit, operating speed, torque and available hydraulic flow.

Replacement parts quote: Provide the installed XS model, pump order number, figure reference, OEM part number, and whether the drive interface is B-fit or C-fit. For volutes and impellers, confirm shaft-end rotation. Request price and availability from Ken’s Distributing Company or call 303-699-7845.

Frequently Asked Questions

What is the difference between XS439 B-fit and C-fit hydraulic driven pumps?

The pump-end sizes can be similar, but the spline interfaces differ. B fit uses 13 teeth with a 16/32-inch pitch, whereas C fit uses 14 teeth with a 12/24-inch pitch. Both use a 30° pressure angle. The corresponding motor mounts and couplings have different OEM numbers.

Do these pumps include a hydraulic motor?

The catalog identifies the pump assembly and its hydraulic motor fit, not a complete preselected tractor or truck hydraulic power system. Confirm whether a hydraulic motor is included in any particular quotation, and match that motor to the equipment system.

Are clockwise and counterclockwise XS439 models interchangeable?

No. Rotation is specified facing the shaft, and the volute and impeller versions can differ. Use the full order number and installed drive rotation when replacing a pump or requesting a replacement impeller.

Can I order an XS439 mechanical seal, hydraulic coupling or replacement impeller?

Yes, the original parts matrix identifies individual OEM components. Common examples include mechanical shaft seal 305462029, B-fit coupling 305462041, C-fit coupling 305462042 and clockwise impeller 305462008. Confirm application before ordering.

What is the maximum flow of the hydraulic-driven XS439?

Franklin Electric’s current 3 × 4-9 water-truck catalog lists capacities to 1,000 GPM and heads to 260 feet. Actual duty depends on pump speed and system head. Older material mentioning 2,000 GPM should not be assumed to describe the XS439 3 × 4-inch configuration.

Are the XS869 6 × 8-9 hydraulic models still available?

Four XS869 order numbers are preserved in the historical 9-inch hydraulic catalog information, but Franklin Electric’s current water-truck catalog marks the complete XS869 pump as no longer available. Request confirmation of replacement options or available service parts by the exact original model.

Related Franklin Electric Pumps and Replacement Parts

• Franklin Electric 9-Inch SAE Engine Drive Pump for direct engine-mounted configurations.
• Franklin Electric 9-Inch Frame Mount Pump for separately driven bearing-frame configurations.
• Franklin Electric Water Truck Pumps for vehicle-mounted pumping applications.
• Franklin Electric Replacement Parts for additional pump series and service-part requests.