rotus623
Well-known member
Just wondering if anyone else has had this issue. I believe it is coming from my jet lower bearings. Maybe the seals are going? What are some signs of lower bearing failure? Sounds like its getting worse too.
Lil' Blue Rude said:You might check to see if your impeller nut has backed of letting the impeller drop down rubbing the liner. I've seen them do that before and they do make a squealing noise.
I've heard of people having bearings go out and the impeller dropping, but the bearing I've seen go bad have just bound up without dropping but there are 2 or 3 different style of bearings over the years.
stinkfoot said:Do you grease it after every trip?
dearl said:Opened my pump up a couple years ago, thought I had the same problem, but mine ended up being the Teflon shaft collar was shot. went ahead and pulled the bearings anyway, it wasn't hard. I checked to see what bearings cost back then and it was crazy expensive. I do remember using my bearing numbers and checking Napa, they could get them at like 1/3 the cost. Mine where not sealed bearings like I thought, and I know their factory, I boat my boat brand new as a jet.
rotus623 said:dearl said:Opened my pump up a couple years ago, thought I had the same problem, but mine ended up being the Teflon shaft collar was shot. went ahead and pulled the bearings anyway, it wasn't hard. I checked to see what bearings cost back then and it was crazy expensive. I do remember using my bearing numbers and checking Napa, they could get them at like 1/3 the cost. Mine where not sealed bearings like I thought, and I know their factory, I boat my boat brand new as a jet.
Thanks for the awesome input dearl! By teflon shaft collar are you talking about the shaft bearing thrust ring that goes onto the driveshaft? What jet unit and HP is that?
You are right, $60 for these bearings is quite expensive, especially if they arent sealed or anything special. So did you go with the napa bearings, or just re-install the used bearings? Thanks man!!
Oh, and did you have to remove the top snap ring to get the bearing housing out of the pump? I have a torch and heat gun.
dearl said:Mine is a Mercury 90/65 2 stroke. The white Teflon shaft collar takes up the gap between the impeller and the shaft. Not sure if that's the right terminology for the part, My pump had a lot of chatter in it, once I broke it down I noticed the Teflon was in pieces. I got a new liner and key, problem solved. I re-used my old bearings, they didn't have any play in them. I did remove the top ring, didn't need a torch, it come right out with the right pliers.
dearl said:Some gentle persuasion was needed with a dead blow but from what I remember it wasn't all that bad.
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