Onan 132-0157 Water Pump Shaft
The Onan 132-0157 Water Pump Shaft transmits drive to the impeller and carries the impeller hub square in the housing. Because the shaft seal rides directly on it, the ground surface at the seal track is a working sealing face in its own right.
Once salt water has been into the bearing housing, the shaft usually comes out pitted. Pitting at the seal track cannot be polished out without taking the shaft undersize, so replacement is the reliable repair. Fit new bearings and a new seal with it. This part is listed for Onan water pump 132-0147 on MDJF 15 kW generator sets.
Key Features
- Machined to the original Onan shaft dimensions and drive features
- Ground seal track for a reliable shaft seal fit
- Positions the impeller correctly in the pump housing
- Direct replacement, no modification to the pump required
- Supplied to suit rebuild alongside seals and bearings
Applications
- Raw water pump rebuilds on Onan marine generator sets
- Replacing a shaft grooved or pitted at the seal track
- Repairing damage after a seized or locked impeller
- Full wet end and drive end overhaul
Specifications
- Brand: Onan
- Manufacturer Part Number: 132-0157
- Part Type: Shaft
- Fits: Onan water pump 132-0147 on MDJF 15 kW generator sets
- Quantity Per Pump: 1
- Condition: New
- Shipping Weight: 1 lb
Frequently Asked Questions
Q: How do I check a shaft for straightness?
Roll it on a flat surface or set it up in vee blocks with a dial gauge. Visible wobble at the impeller end means replace it.
Q: Does the shaft need lubrication on assembly?
Lubricate the seal lip and the seal track before assembly so the lip is not run dry on first start.
Q: Is the drive feature the same on every version?
Not always. Flat, keyed and splined drive ends exist across these pumps, so match the old shaft before ordering.
Q: Why does a new seal leak on an old shaft?
Because the old seal has worn a groove in the shaft. The new lip cannot seal against that step, so it passes water almost immediately.
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 shaft.
CLRMarine
