What is an outboard impeller made of?

What is an outboard impeller made of?

Some centrifugal pumps incorporate the pump body and volute as one piece, thus the pump body/casing also functions as the volute. The impeller can be made of a variety of materials. The most common are cast iron, bronze, brass, stainless steel and plastic.

How long do Outboard impellers last?

All impellers should be changed at a minimum of three years. Some will not make it that long depending on many things, how often it is used… too little and it will deform and tend to dry rot. Use it alot and it will wear out from spinning around in it’s housing.

What are impeller pumps?

An impeller is a rotating iron or steel disc with vanes in a centrifugal pump. Impellers transfer energy from the motor that drives the pump to the fluid being pumped by accelerating the fluid radially outwards from the centre of rotation.

What is impeller in outboard motor?

Your boat’s impeller is a series of rubber vanes molded around a hub. The tips of these flexible vanes can wear out for many reasons due to simple use or if the boat is in sandy water. Impellers can also wear out by becoming stiff and brittle due to the motor sitting unused for several seasons or being exposed to heat.

How often should a boat impeller be replaced?

How often should the impeller on a boat be replaced? It is recommended that a boat impeller be replaced every two to three years or 300 hours, whichever comes first. However, it is suggested to also visually inspect your impeller at the beginning of each season for any signs of wear or damage.

How often should you change your water pump impeller?

You should check the impeller’s condition during Spring Commissioning and every 200 hours of operation. Correctly installed impellers may last for several years, but you should stick to a schedule of preventative instead of emergency maintenance.

What is open impeller pump?

An open impeller has vanes that are attached to a center hub and mounted directly onto a shaft. There is no wall surrounding the vanes which makes open impellers weaker than closed or semi-closed valves. Open impellers are usually used in smaller pumps and pumps that handle suspended solids.

Which is water pump impeller for MerCruiser engine?

Sierra 18-3017 Water Pump Impeller for Mercury Sierra replacement water pump impeller for Mercury and Mercruiser engines. This impeller fits MCM and outboard applications.

What is serial number on outboard motor water pump impeller?

The serial number on the engine we’re going to be working on today is 0T147002. If we take a look at the application charts that we provide in the Sierra catalog we’re going to be using Sierra part number 18-3319.

What does an impeller do on a water pump?

Functional water pumps containing impellers work to pump cooling water through your engine for further sustainability. As with anything else, the better your parts are, the better results you can expect.

How long do outboard water pump impellers last?

“A few years ago Suzuki actually did a study to see how long an impeller would last if you started the motor dry,” said Greenwood, “and it was about 20 or 30 seconds.” Jansen showed me a Mercury outboard water pump housing he removed this season that is coated with melted rubber (see photo #2, above).