JMP Marine JSK0030 Major Service Kit for the JPR-V3000 Engine Cooling Seawater Pump
The JMP Marine JSK0030 is the full internal rebuild kit for the JPR-V3000 engine cooling seawater pump. Rather than replacing an entire pump body that is still perfectly serviceable, this kit gives you every wear component that lives inside the housing, so a pump that has lost prime, started weeping at the seal, or dropped flow can be brought back to as-new performance on the bench in an afternoon.
Where a minor kit covers only the parts that wear out fastest, the JSK0030 goes deeper. It carries the flexible impeller, cam and wear plate that set the pump's displacement, the mechanical seal set that keeps raw water out of the drive end, the bearings and shaft that carry the load, and the end cover, gasket and fastener hardware that close it all up. That matters because bearing rumble and shaft wear are the failures most often missed during a quick impeller change, and they are exactly what sends a rebuilt pump back to the bench a season later.
Although this pump family is best known on Volvo Penta TAMD-series installations afloat, the same engines and pumps turn up well outside the water — stationary generator sets, standby power packages, and industrial and off-highway equipment run the identical cooling arrangement. The JSK0030 suits any of those installations. Every part is dimensionally matched to the original, so nothing needs to be shimmed, trimmed or improvised, and a technician working from the pump's exploded view will find each component exactly where it belongs.
Key Features
- Complete major service kit supplying the full set of internal wear parts for the JMP JPR-V3000 engine cooling seawater pump
- Includes the flexible impeller, cam set, wear plate and mechanical seal set that govern flow, prime and shaft sealing
- Supplies bearings, shaft and retaining hardware, addressing the drive-end wear that a minor kit leaves untouched
- End cover, end cover gasket and fastener set included so the pump is closed up with fresh sealing surfaces
- Nitrile flexible impeller construction suited to raw water, seawater and brackish water duty
- Dimensionally matched to original equipment tolerances for direct assembly with no modification
- Restores a serviceable pump housing to full output at a fraction of the cost of a complete replacement pump
- Packaged as a single part number, removing the guesswork of ordering ten individual components
Applications
- Rebuild and overhaul of the JMP JPR-V3000 engine cooling seawater pump
- Volvo Penta TAMD 102, TAMD 103, TAMD 120, TAMD 121 and TAMD 122 series engine cooling systems
- Volvo Penta TMD 102A and TMD 122A engine installations
- Marine propulsion engine raw water cooling circuits
- Auxiliary and generator set engine cooling on vessels
- Land-based and stationary generator sets using the same engine platform
- Industrial and standby power packages requiring raw water heat exchanger cooling
- Scheduled preventive maintenance intervals and end-of-season pump overhauls
- Workshop and dockside pump rebuilds where the pump body remains serviceable
Specifications
- Part Number: JSK0030
- Product Type: Major service kit, complete internal parts
- Brand: JMP Marine
- Services Pump Model: JPR-V3000
- Serviced Pump Port Size: 2 inch, flange type
- Impeller Included: JMP 8301-01 flexible impeller
- Impeller Material: Nitrile rubber
- Mechanical Seal Set Included: Yes
- Cam and Wear Plate Included: Yes
- Bearings and Shaft Included: Yes
- End Cover, Gasket and Screws Included: Yes
- Fluid Compatibility: Seawater, raw water, brackish water
- Cross Reference, Serviced OEM Pumps: Volvo Penta 3829313, 3829312, 3583112
- Sold As: One complete kit
Frequently Asked Questions
Q: What is the difference between the JSK0030 major service kit and a minor service kit for the same pump?
A: A minor kit is built around the parts that wear fastest — impeller, cam, wear plate, seal set and end cover hardware. The JSK0030 major kit adds the drive-end components, including bearings, shaft and retaining hardware, so the pump is genuinely rebuilt rather than refreshed.
Q: How do I know whether my pump needs the major kit instead of just an impeller?
A: Pull the pump and spin the shaft by hand. Any roughness, notchiness or side-to-side play means the bearings and shaft are worn, and an impeller-only repair will not last. Salt crust or weeping at the weep hole points to a failed mechanical seal, which is another sign the pump has gone past a simple impeller change.
Q: Do I need to remove the pump from the engine to install this kit?
A: Yes. Because the kit replaces the bearings, shaft and mechanical seal, the pump has to come off and be disassembled on a bench. Pressing bearings and setting the seal correctly is not practical with the pump still mounted.
Q: Will this kit work on a pump that is not installed on a boat?
A: It will. The kit is matched to the JPR-V3000 pump itself, not to the vessel, so it serves the same pump wherever it is fitted — including generator sets, standby power units and industrial engine installations that use the same cooling arrangement.
Q: Is any special tooling required to complete the rebuild?
A: A bearing press or arbor press, snap ring pliers and a seal driver cover most of the work. A light coat of glycerine or an approved impeller lubricant on the new impeller makes it far easier to walk the vanes into the cam, and the pump should never be run dry once assembled.
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