Pump Rebuilt?

[rgardner928]

So I decided to upgrade my plastic pumps to the bronze. When I received my bronze pumps the other day I also removed all the bearings inside and replace them with brand new ones. I also removed the wear ring and put a new one in also. So I literally have a used Mint Condition bronze pump with all new bearings and wear ring. I went to install the pump shaft to the impeller and when tighten it down I tighten it down tight, just as it was on the plastic pumps.

Side comment: On my plastic pumps I had to use a breaker bar to get the shaft and impeller loose. I did not use a breaker bar to tight it on the new pump.

BUT... now the pump is extremely hard to spin freely by hand. If I slightly loosen it a little, it spins freely by hand and when I stop spinning it..it keeps spinning. But when tightened all the way. I had to use force to spin it and it doesn't keep spinning when I stop spinning.

My question..How right do I want it?

 

[mikidymac]

First you have to set the bearing and seal depth exactly to the spec in the manuat, it isn't as simple as just pushing the bearings in until they stop. They have to be set at the exact spec depth.

Second it sounds like you are pinching hte thrust bearing. his is very easy as it can shift in the oil groove in the shaft and once it is pinched it is trash.

I start py puting the shaft in a vise, then install the thrust bearing, then washer then put the pump over the shaft then impeller, this way the thrust bearing can't slip into the oil groove.

 

[rgardner928]

First you have to set the bearing and seal depth exactly to the spec in the manuat, it isn't as simple as just pushing the bearings in until they stop. They have to be set at the exact spec depth.

Second it sounds like you are pinching hte thrust bearing. his is very easy as it can shift in the oil groove in the shaft and once it is pinched it is trash.

I start py puting the shaft in a vise, then install the thrust bearing, then washer then put the pump over the shaft then impeller, this way the thrust bearing can't slip into the oil groove.

Hold up! When I told apart mine old ones. When I slid out the pump shaft. The first thing I saw was the thrust bearing, then the washer. Your telling me it goes the other way?

It sounds like your putting part 30 in first then part 18 on top, then you shift the shaft, part 4 in.

 

[rgardner928]

Nevermind..I read that again. I understand now..you mount the pump shaft in the vise with the shaft facing up..I follow now, lol.

 

[mikidymac]

Nevermind..I read that again. I understand now..you mount the pump shaft in the vise with the shaft facing up..I follow now, lol.

That is correct.