Yanmar 104211-42060 Pump Shaft for 2GM and 3GM
The Yanmar 104211-42060 is the genuine replacement pump shaft for the sea water pump fitted to 2GM and 3GM Series engines. It is the backbone of the pump and the part every seal in it depends on.
Corrosion is the marine version of the same problem. Salt water that has been past a failed seal pits the shaft along its length, and a pitted shaft destroys new seals as fast as they are fitted. The keyway or drive flats are the third area to check, because a worn drive lets the impeller move on the shaft and that movement shows up as uneven vane wear.
Key Features
- Genuine Yanmar replacement pump shaft
- Fits the sea water pump fitted to 2GM and 3GM Series engines
- One per pump
- Ground sealing surface for correct seal life
- Carries the drive from the engine into the impeller
- Renew the pump seals at the same time
Applications
- the sea water pump fitted to 2GM and 3GM Series engines
- Raw water pump rebuilds
- Replacing a shaft grooved where the seal runs
- Repairing corrosion after salt water past a failed seal
- Restoring a worn impeller drive
- Spring commissioning and layup service
Specifications
- Brand: Yanmar
- Manufacturer: Yanmar Marine
- Manufacturer Part Number: 104211-42060
- Part Type: Pump Shaft
- Fits: The sea water pump fitted to 2GM and 3GM Series engines
- Quantity Used: One per pump
- Condition: New
Frequently Asked Questions
Q: Should I replace the bearing at the same time?
Check it. A shaft that has worn unevenly usually did so because the bearing allowed movement, and fitting a new shaft into a tired bearing repeats the wear.
Q: Why does the shaft corrode?
Salt water that has been past a failed seal sits against it. That is why a weeping seal is worth dealing with early rather than at the next service.
Q: Does the impeller drive matter?
Very much. A worn keyway or drive flat lets the impeller move on the shaft, which wears the vanes unevenly and eventually rounds off the drive altogether.
Q: Do I need special tools?
A press or a suitable puller makes the job straightforward. Driving a shaft in or out with hammer blows damages the bearing and the seal bores.
Not sure this is the right part? Send us a Picture of the Pump Plate on your pump and the CLR Marine team will confirm the correct pump shaft.
CLRMarine
