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Mine looked the same and did not wear the impeller. Changed the impeller out this spring after 2 seasons and the impeller still looked new. Never had any pressure issues running this pump. In fact, my pressure picked up over stock at idle. And yes, that inner wear plate would be easy to miss. And on my pump was a bear to get the old one out to replace with the rebuild kit.
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Fair enough then! And thanks for everybody’s help on sorting out my boneheaded oversight. Ive ordered the plate and will post the results. I may still run a small hone in that baby just because. ;p |
I have the same pump. I change my impeller once a year as maintenance . Never have had a problem with any part of it. Jeff Wurl |
Originally Posted by Baja Rooster
(Post 4692824)
https://cimg7.ibsrv.net/gimg/www.off...18847f22d.jpeg It looks like nearly an 1/8” gap. This is the oem Merc impeller. I got a Sierra one laying around and brand new measures even smaller. |
Originally Posted by 14 apache
(Post 4692976)
I hope harden gives you something for the pain Glad it was an easy fix. |
Originally Posted by Rookie
(Post 4692995)
They did give him something for the pain... the wear plate that he forgot to install. lol
Glad it was an easy fix. |
Thin coat of white lithium is all I have ever used to pre-lube any impeller in any housing. I believe the Hardin rebuild kit also suggests using lithium grease.
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Originally Posted by Baja Rooster
(Post 4692945)
Fair enough then! And thanks for everybody’s help on sorting out my boneheaded oversight. Ive ordered the plate and will post the results. I may still run a small hone in that baby just because. ;p |
I've been running this pump on my 525 for years with no problem. Used to change impeller every year but it always looks like new so now I do it every 2 years.
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water base KY or glycerin to install impellers, Johnson pumps has done many studies on this and have found glycerin to be the best for installing impellers. Glycerin -- It washes out at start up very very quickly - many other products do not wash out very quickly. And dish soap exacts the oil out of impellers. All rubber products are a form of an oil base .
Johnson includes the glycerin in every impeller kit they sell for a reason. Like I said they tested everything Actually tech speaking clean water is the best for impellers no matter how you slice it because thats what they live in 24 / 7 Impellers and the housing is all about tolerances - when wrong it does not work nor flow correctly |
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