Some experts advise you to remove the impeller from the raw water pump lubricate it with vaseline petroleum jelly and put it back in the pump.
Raw water pump impeller replacement how to guide.
If you have another brand of pump and you know their impeller part number go to page 105 upgrade to a jabsco impeller and check for a jabsco replacement impeller part number.
If you r on a trailer or up on blocks now would be a good time to.
It may seem like a small unnecessary fix but it wi.
Replacement is relatively simple.
Next step is to drain the water out of the engine.
Raw water pump impeller replacement how to guide 1.
Then remove the pump s end cover screws and take off the cover and gasket.
Loosen the serpentine belt.
Replacing impellers in raw water pumps.
Identify the impeller profile code letter by placing the impeller on the profiles on pages 98 100.
This prevents the impeller from sticking to the pump housing.
Then replace the cover to the pump housing but leave the cover screwed in place loosely.
We recommend replacing your raw water impeller if it s never been done or it s been more than two years.
If you have the impeller in front of you.