Leak from impeller on Volvo Penta MD22?

[nigelmercier]

My salt water impeller is leaking, and it isn't from the front face or the pipework. Is there another seal somewhere that can be replaced?

 

[Stork_III]

My salt water impeller is leaking, and it isn't from the front face or the pipework. Is there another seal somewhere that can be replaced?

There is a seal on the impeller shaft, See here http://www.volvopentashop.com/Volsp...es/7744150/7744150_26/7744150_031/7744150_032

 

[scottie]

Most impeller pumps have tell tale holes on the body to allow any water leaking past the seal to escape & display leak.
Most likely shaft seal leaking .

 

[VicS]

I expect the water is coming from a weep hole in the underside of the pump body located between the water and oil seals

It'll indicate that the water seal is leaking.

Dont let it get too bad or water will find its way past the oil seal into the engine

Inspect the shaft for wear too.

http://www.marinepartseurope.com/en/volvo-penta-explodedview-7744150-26-309.aspx

 

[nigelmercier]

Thanks for quick replies.

Is the shaft seal easy to change?

 

[FlyingDutchman]

Hi Nigel,

The sections 20A-06 and 07 of the workshop manual provide useful information!

 

[alan]

Leaking Impeller

There have been a load of discussions about this over the last years and if you search this forum you will find very detailed instructions on how to change the shaft seal.
Yes, it's very easy to do and the seal costs about 4 euros or so.

Alan.

 

[orion50]

My salt water impeller is leaking, and it isn't from the front face or the pipework. Is there another seal somewhere that can be replaced?

What evidence of a leak are you seeing?

 

[ksutton]

It looks like the pump face plate gasket to me, new gasket required.

 

[davidej]

Yes, it's very easy to do and the seal costs about 4 euros or so.

Alan.

If the shaft is worn it is, unfortunately, rather expensive for a fairly simple s/s rod

 

[nigelmercier]

What evidence of a leak are you seeing?

As in the photo, and it isn't coming from the front plate

 

[Heckler]

Undo the two bolts in the pic and the hoses, take the pump off, undo the nut on the impellor, and take it all apart, the bearings and seal, you can get from a motor factor or bearing factor for peanuts.
stu

 

[Heckler]

and then take the shaft to a engineering shop and have them make one out of real metal, it will cost less than the putty one from volvo.

I know what you are saying but that one in the pic is 12 years old and still going strong!
Stu

 

[nigel1]

Assume your water pump is belt driven, if so, no danger iof water getting into the oil side.
As other have said, changing the seal and the two bearings is easy.
Cleghorn will supply the correct ones, and when I replaced mine earlier this year, they were cheaper than my local bearing supplier.
Check the shaft for wear where the seal sits, and use a very fine emery/polishing paper to smooth it down.
If its badly scored it will need a replacement, dont know how much a machinist will charge to make a new shaft, but from Cleghorn, the cost is £80'

So far as I am aware, Volvo do not make the cooling pump or the shaft, its a Jabsco pump which just happens to have VOLVO scratched into the front plate

 

[VicS]

Assume your water pump is belt driven, if so, no danger iof water getting into the oil side.

If you are right it needs sorting out before water gets into the bearings