Yanmar 1GM10 Water Pump Replacement

[bendyone]

Hi

I have a Yanmar 1GM10 with a dripping water pump. Has anyone replaced the whole pump with a different make. I have spoken with Jabsco who sell a pump for £84 it just need a new mounting bracket and drive belt - a bit of work but half the cost of a yanmar pump let alone the cost of replacing the oil pipe below tha rusts when dripped on!
The other way would be an electric pump - any veiws on this?

<hr width=100% size=1><P ID="edit"><FONT SIZE=-1>Edited by bendyone on 19/03/2004 15:05 (server time).</FONT></P>

 

[Mel]

I have had the same problem with leakage -changed the pump seals and fitted a new oil pipe. The oil pipe is now made in copper so should not rust as previous. The fitting of new seals 9water side and oil side was not a difficult task and I would expect this to be needed from time to time on any make of pump.

The Yanmar pump has a hole in the bottom of the shaft housing as a tell tale to show that the seal is leaking. Without the tell tale showing that action is needed water would eventually pass the oil seal and end up in the crankcase. I believe that mine suffered from a barnicle getting against the shaft and the water seal causing damage.


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[Mel]

I have had the same problem with leakage -changed the pump seals and fitted a new oil pipe. The oil pipe is now made in copper so should not rust as previous. The fitting of new seals water side and oil side was not a difficult task and I would expect this to be needed from time to time on any make of pump.

The Yanmar pump has a hole in the bottom of the shaft housing as a tell tale to show that the seal is leaking. Without the tell tale showing that action is needed water would eventually pass the oil seal and end up in the crankcase. I believe that mine suffered from a barnacle getting against the shaft and the water seal causing damage.


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[broadcaster]

Hi,

Now I know what is wrong with mine, how much were the bits. The oil pipe looks expensive.

Thanks.

Andy

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[Rohorn]

Hi ...I replaced the seals only on my two, not so expensive, but those oil pipes!
Tried brazing the old ones first, but really mickey mouse, so bought new.
New ones were still steel three years back, so I painted them with two pot epoxy.
Would have like to shroud the pipes in shrink-plastic tube, but the banjos at the ends were too big.
Cheers....R

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[Birdseye]

Go along to your local motorbike dealer ( the best ones are the backstreet Harley types full of bearded Hells Angels.....seriously!) and he will make you up (or advise you who will) a stainless re-inforced rubber oil pipe for small change

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[blackbeard]

I had this problem too. I replaced the oil seals (and also impeller) and this seems to have cured it.

On examining the inside of the pump, it seemed rather scored, and I suspect it has been pumping water (under a previous ownership) with a generous admixture of sand and grit. Suspect it has been used in shallow water and possibly while aground. This is a well known method of damaging water pumps (of any make). I'm told that leaving a boat on a half-tide mooring with a muddy bottom can force gritty mud into the water intake with a similar result.

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