First, I am so grateful for this forum. I've solved so many pool issues with information garnered from this group! I just replaced the 2hp motor on my whisperflo pump. When taking out the old motor, the bottom bolts were seized tight, and I couldn't remove them. So I bought a Pentair seal plate online, but it didn't come with the bolts. I bought the motor from a Pentair dealer, and he gave me two bolts, but they are 3/4" long, not 7/8" like the original two. They bolt on fine, and everything is working great, but I'm wondering if that's ok or if I should go ahead and get 2 more bolts to replace the "short" ones? (I went to 2 local hardware stores, and neither had the 7/8". I can easily buy them online.) Should I bother? Also, is it prudent to put on some anti-seize goop on these since it's a SS bolt going into brass and there's so often an issue with seizing?? Any information is appreciated!
motor/seal plate bolts
- Thread starter Michi swims
- Start date
It's only 1/8" difference, so it "probably" isn't a big deal.
As long as it engaged enough thread, it's probably fine.
It's always best to use the exact parts for best results.
So, I don't know for sure if it is going to make any difference or not.
Anti-seize is probably a good idea.
Are the new bolts good stainless steel?
If not, definitely replace them with the original size stainless steel.
As long as it engaged enough thread, it's probably fine.
It's always best to use the exact parts for best results.
So, I don't know for sure if it is going to make any difference or not.
Anti-seize is probably a good idea.
Are the new bolts good stainless steel?
If not, definitely replace them with the original size stainless steel.
I always have used a little pool lube on those bolts to help in the future. Stenner Aqualube is best but sometimes difficult to get and pricey. The issue usually isn't with the bolt and brass inserts themselves, but with the corrosion that builds up when there is a seal leak that isn't caught soon enough.
As above..dab of pool lube, grease or the like on the threads makes it so much easier to service later.
Thanks, James! They both did tighten up just fine, and I placed those two bolts diagonally from each other. Probably wouldn't make a difference anyway, but it felt better in my mind that it is balanced that way.
The labeling on the top of the bolts is the same as the original bolts that I have, so I'm assuming it's the same SS. Some have suggested putting regular lube, but I assumed anti-seize would be better. I appreciate your input!Good to know. I put anti-seize on them... do you think that pool lube is a better option?
No, I just don't carry it on my truck like Aquashield/aqualube (same stuff).
Anti-seize never seize etc is more for high temperature applications for example exhaust studs on an automotive engine. Pool pump application is not high temperature sensitive. Be sure to clean the threads before installing. Small wire brush and compressed air helps.