GPZ water pump oil leak ---

[zxtc]

Hi All

I have a 1984 GPZ900 and while doing an oil change i located a oil leak coming from the top left side of the water pump. It was dripping out, so not good!
I have read some posts about replacing the oil seal to fix this. Is the seal the one around rear of the body of the pump or in the section that connects to the oil pump?
Also there was some gunk/corrosion in the pump itself.
Some pics -







CHEERS MICK

[mortaygo]

gee I am glad I found this site.. I am only new here and am restoring my old GPZ900. I have a constant oil drip and have searched and looked to find the problem.. and I think you have solved it for me... I was struggling to see how there could be oil leaking from the water pump... now I see it is possible.. is there a gasket kit for it?

Thanks to these type of forums and to you for your help

[zxtc]

Hi

For the parts i just rang the local Kawasaki shop and asked for water pump gaskets. You need the water pump gasket, outlet pipe oring and the rear oil seal on the pump. Cheap parts. New water pump was quoted $450
Did mine but it still leaks a tiny bit so may have to do again. Have been told you should use some grease on the oil seal which i didn't.

CHEERS MICK

[mortaygo]

thank you.. I will go order some parts now!!

Joe

[mortaygo]

Hi

For the parts i just rang the local Kawasaki shop and asked for water pump gaskets. You need the water pump gasket, outlet pipe oring and the rear oil seal on the pump. Cheap parts. New water pump was quoted $450
Did mine but it still leaks a tiny bit so may have to do again. Have been told you should use some grease on the oil seal which i didn't.

CHEERS MICK

Mick - I just tried to order the parts and my local Kawasaki dealer said - have to order the entire pump...

I just tried another dealer and he said the rear oil seal was availble - so I ordered that - it was in stock!!!!

where did you get yours mate? I will get gasket paper if I have to an make one...

[JetPilot]

Can I just say that when the water pump leaks oil and coolant, this is a sign that its stuffed.
There is a tell tale hole at the bottom of the pump, when coolant leeks out ONLY, then the seals just need to be changed near the impeller.
If oil and coolant leeks out this hole, the ENTIRE pump needs to be replaced as the seal on the shaft that goes into the crank case is stuffed.
This can only be replaced with a new pump.

[GPXtim2]

Yeh Rod's correct, the same thing happened to my GPX pump and I needed a new pump because the parts to repair it wernt sold seperately that was a few years ago mind you at $400 odd that was a bit much I thought.
My mechanic who built my engine had the seal area machined to take a common pump seal and this worked for 20K klms until it started leaking, but as seeing it only costs $50 to do it was worth, got the seal from repco.
Speaking of repco its worth going down there to see whats available as there may be an alteranive thats heaps cheaper than genuine.
I needed a few water hoses and took the stockes to repco to see what they had and would you beleive that early V8 valiant heater hoses are almost identical (if you cut off the unwanted bits) at a fraction of the price.

[mortaygo]

Yeh Rod's correct, the same thing happened to my GPX pump and I needed a new pump because the parts to repair it wernt sold seperately that was a few years ago mind you at $400 odd that was a bit much I thought.
My mechanic who built my engine had the seal area machined to take a common pump seal and this worked for 20K klms until it started leaking, but as seeing it only costs $50 to do it was worth, got the seal from repco.
Speaking of repco its worth going down there to see whats available as there may be an alteranive thats heaps cheaper than genuine.
I needed a few water hoses and took the stockes to repco to see what they had and would you beleive that early V8 valiant heater hoses are almost identical (if you cut off the unwanted bits) at a fraction of the price.

yeah I have done that a few times with bike radiator hoses.. funny what will fit if you need it too... and a huge saving