Tweet
I purchased an impeller kit OEM for my 1995 70hp, the kit has an impeller with 6 vanes the impeller that was in the motor had 3 vanes does it matter, I spoke with the dealer and he looked it up and there were 3 years 94, 95 and 96 that used the 3 vanes, he was going to swap out the impeller for me but I already installed it as it was an OEM kit
-
-
Hmmmmm no techs with an opinion -
Missed this one somehow, sorry. It appears that I am the only one here.Originally posted by mrelmo View PostHmmmmm no techs with an opinion
I too have run into that scenario a few times.... 3 vanes vs 6 and have encountered both types in the same identical part numbered water pump kit.
I never questioned it and simply took it as a factory change and installed it. It worked out fine, no problems.Comment
-
Thank you that is what I was hoping, if you don't mind 1 other question the o-ring that is between the metal cup and the plastic housing what is the purpose and any issues if it not usedComment
-
I retired in 1991 and my books only go up through the 1992 models, so I am not familiar with the 1995 models if changes were made in that area.Originally posted by mrelmo View PostThank you that is what I was hoping, if you don't mind 1 other question the o-ring that is between the metal cup and the plastic housing what is the purpose and any issues if it not used
I do recall various (not all) water pumps having a "flat" rubber washer type "O" Ring that sat in a recessed groove in the underside of the top portion of the plastic housing... then the cup pressed up against it. That simply added a slight bit of pressure of the cup downward to seal against the impeller plate. It also prevented water pressure from flowing alongside, between, the cup and plastic housing to shoot up the driveshaft tube. However I never got a straight answer from any factory rep as to the actual purpose of it.
There were two other "O" Rings (varies) in kits.... One that went in a groove just under the top splines of the driveshaft to prevent the access of water to the splines (rust/frozen splines)... be sure to always grease those splines!
The other "O" Ring would apply to some (not all) impellers that have a groove machined in one side (from memory, I believe the bottom side) and the "O" Ring simply sat in that groove to create a perfect sealing effect.
Did the above answer your question?Comment
-
Yes that did answer my original question, thank you very much, on the 1995 70 there is no o-ring used on the shaft near the topComment
Comment