Coolant leak


Technical information and Q&A applicable to all years and models of Goldwings
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Oldflyer
Posts: 36
Joined: Sun Mar 16, 2014 6:54 am
Location: Fredericksburg, Virginia
Motorcycle: 1984 GL1200A Aspencade

Coolant leak

Postby Oldflyer » Sun Apr 06, 2014 4:14 pm



There is coolant coming out of the hole in the bottom of the front engine case, located at the approximate position of the water pump. Am I correct in thinking the the water pump shaft seal is leaking and as the result, the leaked coolant is coming out of this hole? Some turkey plugged the hole with epoxy and it was still leaking slightly when the bike is cold. It doesn't leak when the bike is running. Yes, I removed the epoxy, which revealed the drain hole.

I just purchased this bike about two weeks ago and the previous owner told me that he had replaced the water pump. I think he lied. There is no evidence of any of the fastenings being removed to replace the pump.



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Fatwing Chris
Posts: 741
Joined: Thu Oct 21, 2010 6:10 pm
Location: Ont.,Canada
Motorcycle: 2004 ABS Model Goldwing

Re: Coolant leak

Postby Fatwing Chris » Sun Apr 06, 2014 4:41 pm

Yep your water pump is most likely toast.If you pull the front cover off you will see the impeller.Try moving it up ad down or side to side .Should be no play in the shaft.Don't run it like that as coolant can get into the engine and destroy the bearings.Might want to check your oil for coolant.
If I'da known it would last this long,I'da taken better care of it.
Chris
Double Dark
Darkside # 1602

User avatar
Oldflyer
Posts: 36
Joined: Sun Mar 16, 2014 6:54 am
Location: Fredericksburg, Virginia
Motorcycle: 1984 GL1200A Aspencade

Re: Coolant leak

Postby Oldflyer » Sun Apr 06, 2014 6:26 pm

Thanks Chris. I will be watching for any signs of coolant in the oil. So far, there is no sign of that. I think I may have caught this problem in time. I just changed the oil and there was no sign of any of it in the drained oil. I am not riding or running the bike now, until I get this pump problem resolved, as well as the new timing belts installed. All the coolant has been drained in prep for removing the radiator.

I understand that these pumps with the steel impeller can be rebuilt, provided the shaft is in good shape. I have the capability of rebuilding the pump in my shop, utilizing new bearings and seals. If there is any doubt about doing so, I will install a new pump. The former owner told me that he replaced the pump just a few weeks ago. He lied.


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