Hi All,
I recently changed the impeller on my 08 Mercruiser Alpha One Gen II for the first time. On reinstallation I was unsure how to position the plastic ?filler wall? that goes up into the gear housing. The filler wall is positioned just to the rear of the water pump in the gear housing and serves as a dam to hold water around the pump housing to prevent the pump from drawing air into the cooling system, making the water pump more efficient. The filler wall has two small cutouts on the lower two corners on one side. It appears designed to allow some water to flow through the wall. In the iboats link below, the filler wall (item # 4) appears to have the cutout corners facing toward the prop and away from the water pump, as it slides into the gear housing. Service Manual 14, page 3A-6 also shows it this way. However, I saw a YouTube video of an impeller change and the filler wall is positioned with the cutouts facing toward the transom and the water pump; the opposite of the drawings. Below is the link to the video. Does anyone know the correct way the filler wall goes into the gear housing? I followed the manual diagram during reinstallation.
http://www.iboats.com/Mercruiser-Al...ng-Components-Exploded-View/dm/view_id.272968
http://www.youtube.com/watch?v=jXq35NOX8kw&feature=related
Thanks in advance for the help.
I recently changed the impeller on my 08 Mercruiser Alpha One Gen II for the first time. On reinstallation I was unsure how to position the plastic ?filler wall? that goes up into the gear housing. The filler wall is positioned just to the rear of the water pump in the gear housing and serves as a dam to hold water around the pump housing to prevent the pump from drawing air into the cooling system, making the water pump more efficient. The filler wall has two small cutouts on the lower two corners on one side. It appears designed to allow some water to flow through the wall. In the iboats link below, the filler wall (item # 4) appears to have the cutout corners facing toward the prop and away from the water pump, as it slides into the gear housing. Service Manual 14, page 3A-6 also shows it this way. However, I saw a YouTube video of an impeller change and the filler wall is positioned with the cutouts facing toward the transom and the water pump; the opposite of the drawings. Below is the link to the video. Does anyone know the correct way the filler wall goes into the gear housing? I followed the manual diagram during reinstallation.
http://www.iboats.com/Mercruiser-Al...ng-Components-Exploded-View/dm/view_id.272968
http://www.youtube.com/watch?v=jXq35NOX8kw&feature=related
Thanks in advance for the help.
