Hello all, I currently own a 96 Volvo penta with a sx cobra 1.66 outdrive and it is powered by a 5.0fl v8.
The other day when I was out on the lake it started to make this grinding swirling sound when I put it in fwd or reverse gear and it would get a bit louder and vibrate when at cruising speeds and will go away at higher speeds. I decided to check the gear oil and it appears the magnet in the drain plug broke and there is small metal chunks stuck to it. I checked the inspection port on the top gears and the gears up top seem to be ok, I’m guess the lower unit is shot. I want to swap the lower unit with a used one in good condition but I am worried as there is now metal particles in the upper gears as well as it traveled throughout the oil. Any ideas on how I can flush and clean the inside of the gear casing prior to installing the new lower unit?
The other day when I was out on the lake it started to make this grinding swirling sound when I put it in fwd or reverse gear and it would get a bit louder and vibrate when at cruising speeds and will go away at higher speeds. I decided to check the gear oil and it appears the magnet in the drain plug broke and there is small metal chunks stuck to it. I checked the inspection port on the top gears and the gears up top seem to be ok, I’m guess the lower unit is shot. I want to swap the lower unit with a used one in good condition but I am worried as there is now metal particles in the upper gears as well as it traveled throughout the oil. Any ideas on how I can flush and clean the inside of the gear casing prior to installing the new lower unit?