Onan 132-0312 Water Pump Cover Screw
The Onan 132-0312 Water Pump Cover Screw clamps its joint on the pump to the designed load. It sounds like an ordinary fastener, but the wrong length in a pump housing either bottoms out before the joint is tight or projects into the wet end where the impeller runs.
A rounded head or a stretched thread will not clamp properly, and a joint that is not clamped properly weeps and then corrodes. Because these fasteners are opened at every impeller service, most owners simply keep a set aboard and change them out as they get tired. This part is listed for Onan water pump 132-0284 on MAJB 2.5 and 3.0 kW generator sets.
Key Features
- Correct length, thread and head style for its position on the pump
- Clamps the joint to the designed load without bottoming out
- Direct replacement for corroded, seized or rounded originals
- Sized to the Onan pump housing and cover pattern
- Inexpensive to keep as a spare set aboard
Applications
- Raw water pump service on Onan marine generator sets
- Replacing corroded or rounded pump fasteners
- Reassembly after an impeller or cover change
- Building a spares kit for seasonal pump maintenance
Specifications
- Brand: Onan
- Manufacturer Part Number: 132-0312
- Part Type: Cover Screw
- Fits: Onan water pump 132-0284 on MAJB 2.5 and 3.0 kW generator sets
- Quantity Per Pump: 4
- Condition: New
- Shipping Weight: 1 lb
Frequently Asked Questions
Q: How many are fitted per pump?
It varies by position and by pump. Count what comes out and match it before you order.
Q: What is the right tightening pattern?
Cross pattern, in stages, so the cover or flange pulls down evenly and the gasket compresses the same all round.
Q: What if one shears off in the housing?
Stop before it gets worse. Penetrating fluid, heat and a proper extractor, or take the pump to a machine shop rather than drilling it freehand.
Q: Do I need new washers as well?
If the original used a sealing or lock washer, replace it. A reused lock washer has already lost its spring.
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 cover screw.
CLRMarine
