Answer
Sep 25, 2023 - 10:04 AM
A water pump replacement kit for a Mercury outboard motor typically includes several components to ensure the efficient and proper functioning of the water pump, which is essential for cooling the engine. The exact contents of the kit may vary depending on the specific model and year of your Mercury outboard motor, but here are the common components you can expect to find in a typical water pump replacement kit:
Worth noting, this 1987-1993 Mercury Mariner 70/75/80/90/100/115 HP Outboards OEM Service & Repair Manual does contain the complete replacement procedure for all the components of the water pump.
- Impeller: The impeller is the most critical component of the water pump. It's a rubber or plastic vane that rotates to draw water into the cooling system and circulate it through the engine to prevent overheating.
- Gaskets and Seals: These are necessary to create a watertight seal between the various components of the water pump housing and the engine. Common gaskets include the base gasket and the faceplate gasket.
- Housing: The water pump housing encases the impeller and helps direct the flow of cooling water. It may be made of plastic or metal, depending on the model.
- Wear Plate: The wear plate is often included in the kit to reduce friction between the impeller vanes and the housing. It helps prolong the impeller's life.
- O-rings: O-rings are used to create seals and prevent water from leaking out of the pump housing.
- Key: A small metal key may be included to secure the impeller onto the driveshaft.
- Screws/Bolts: Fasteners are included to secure the water pump housing and other components in place.
- Liner/Sleeve: In some kits, you may find a liner or sleeve that fits over the driveshaft to protect it from wear caused by the impeller.
- Washers and Nuts: These may be included for securing various components together.
- Tube Guide: Some kits include a tube guide or tube guide grommet that helps direct the flow of water from the pump to the engine.
- O-Ring Grease: A small packet of grease may be provided to lubricate O-rings and seals during installation.
- Instructions: Detailed installation instructions are often included in the kit to guide you through the replacement process.
Worth noting, this 1987-1993 Mercury Mariner 70/75/80/90/100/115 HP Outboards OEM Service & Repair Manual does contain the complete replacement procedure for all the components of the water pump.
