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Raw Water Pump On Mercruiser Engines

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Boat parts from PartsVu

Your Raw Water pump is one of the most critical marine engine parts. The raw water pump provides the water for the operation of your engine. It throws water into the raw water strainer and subsequently into the engine for cooling, lubrication, combustion, and other engine requirements. Raw water pumps can be a mechanical device or another similarly named commercial variant called a ring gear centrifugal pump. Read this piece of information before you buy water pump Boat Parts from PartsVu!

How is a Raw Water Pump On Mercruiser Engines Work?

A raw water pump on a Mercruiser engine is used to draw water into the engine. The raw water pump is an electrical device powered by the boat’s battery, and it draws in water through the intake strainer and into the engine. The raw water pump is located near the engine block and has an intake strainer that keeps debris from entering the system.

The raw water pump is a major component of your boat’s cooling system since it helps keep your engine cool by circulating coolant through your engine block and into other components like the exhaust manifolds and heads. The raw water pump also helps maintain proper pressure levels in your cooling system by pulling in more coolant when needed.

How to Take Out the Raw Water Pump On Mercruiser Engines?

The raw water pump is an important component of your engine’s cooling system and can be dangerous if it breaks down. To keep your engine running smoothly, you should replace your raw water pump at least every two years. You can do this yourself by following these steps:

Step 1

Loosen the hose clamps on either side of the raw water pump. Loosen them just enough so that they don’t leak any water.

Step 2

Locate a mounting bolt holding the raw water pump in place by hand. Use an Allen wrench to remove this bolt from its location and set it aside for later use.

Step 3

Find another mounting bolt on the other side of the engine block below your old raw water pump. Remove it from its location with a socket wrench or ratchet set at about 15 degrees counterclockwise from straight up (or however far as needed for clearance).

How to Repair or Replace a Raw Water Pump On Mercruiser Engines?

The raw water pump on Mercruiser engines are simple, but they can be difficult to diagnose. The best way to approach this problem is to start with a visual inspection of the pump and see if there are any obvious signs of damage. If you find that nothing is wrong, then it’s time to move on to testing the raw water pump.

First, check for power at the raw water pump. If it is getting power and still not working properly, you will need to test for continuity between the three terminals on the top of the pump: two green and one red wire. This can be done by using a multimeter or an ohmmeter.

If there is no continuity between those three terminals, something has shorted out internally inside your raw water pump and needs replacing before you can use it again. However, if there IS continuity between those terminals, we know there’s some problem with our wiring harness or wiring loom instead!

How to Install a New Water Pump On Mercruiser Engines?

To install a new water pump on your Mercruiser engine, you will need to:

  1. Remove the old water pump from your Mercruiser engine by first draining the coolant and then disconnecting the hoses and wires from the pump.
  2. Clean off corrosion from the old water pump’s mounting plate and bolt holes using sandpaper and a wire brush.
  3. Put on gloves before handling the new water pump since it may have some oil residue that could cause skin irritation if not washed away immediately after the installation.
  4. Place the new water pump onto the mounting plate with its gasket facing toward you (the side with raised ridges). Make sure that all bolts are lined up properly before tightening them down in sequence from left to right, starting with one at a time until full torque has been reached for each bolt type used during the installation process (this can vary slightly depending on what model of Mercruiser engine you own).

Order Water Pump Boat Parts from PartsVu

Boat parts are essential for the upkeep of your watercraft. To ensure that your boat is in good working condition and ready for any adventure, you must have all the right Boat Parts from PartsVu.

At PartsVu, we offer water pump boat parts that are high-quality and affordable. We carry a wide range of products, including:

  • Water Pump Repair Kits
  • Water Pump Seals & Gaskets
  • Water Pump Bearings & Gears

You can order online or over the phone with just a few clicks. We make it easy to find what you’re looking for by organizing our inventory by brand, type, and fitment. You can also use our search function to narrow down your results by entering any keywords that describe your needs.