'92 XP, pump removal and rebuild

[ger87410]

Was letting some people ride, and the engine suddenly stopped on them in the water and wouldn't turn over.

As near as I can tell, the impeller blade dug into something metal (wear ring got worn out?) and has become lodged.

The cylinders move freely up and down for about 1~2mm, but the blade doesn't move at all. I'm fairly sure my problem is in the pump.

I'm looking for opinions, please. How hard is the pump to rebuild?

I'm trying to decide whether to do it myself, or if I'd be better off bringing her in to the shop. My only experience with a pump is when a rock became lodged in my 550. That was a PITA to get that rock out, but I did it without pump disassembly.

Thanx, guys!
G

 

[gj_fx1]

not too hard. pull pump (4 nuts outside 3 water lines inside, pull HARD)
You will need an impeller tool. Remove the pump cone, put the square end of the shaft in a vice, unscrew impeller. The wear ring itself needs to be cut lengthwise to be freed up. When you get it out sand the aluminum good. Corrosion of the aluminum causes the thing to seize up. Consider replacing the carrier bearing while you have it apart.

 

[ger87410]

Thanx for the words of encouragement! I pulled it off by tying the front to my truck and using a come-along attached to the top 2 venturi bolts. Popped out easy as pie.

It smelled horribly!!! The bearings are seized. Somehow it got water into the bearings. I assume it happened when it seized.

I'm going to take the pump into the repair shop to get the blades removed. I think it's better then spending money for a tool you'll use once in a blue moon.

PS: I started the engine and she works good. I did not rev it at all, just idled.

 

[WFO Speedracer]

Take it to a shop if you must but I suggest you get a price quote in writing up front or have them call you with a quote once it is apart.Typically when a jet pump seizes up due to lack of oil it is not rebuildable ,it damages the machined area of the pump behind the thrust bearing and usually damages the thrust bearing,washer and shaft as well.I would say two out of ten might be rebuildable,if its a bronze pump you have a much greater chance of it surviving.The price of the shaft,thrust bearing,thrust washer,two needle bearings ,oil seal and o-ring will be way more than a used pump assy,thats not including any labor,shop supplies or jet pump oil.You will be money ahead to buy yourself an impeller tool to try and salvage the impeller and look for another complete pump assy.I see the going all day long for $100.00-$150.00.