Waterpump bearings gone


Information and questions on GL1100 Goldwings (1980-1983)
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dalez
Posts: 10
Joined: Sun Aug 14, 2011 4:31 pm
Location: Albany, NY
Motorcycle: 1981 GL1100 Standard

Waterpump bearings gone

Postby dalez » Tue Apr 24, 2012 9:03 pm



Hello-Noticed an oil leak under an 81 GL1100 I bought to fix up and removed the waterpump housing. In the oil filter housing were metal shavings and when I looked at the back of the waterpump the bearing cover was missing and 4 or 5 ball bearings are missing. What are the chances the metal made it into the internal parts of the motor/or would they have all been caught by the oil filter?

Dale



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WingAdmin
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Re: Waterpump bearings gone

Postby WingAdmin » Wed Apr 25, 2012 8:46 am

It's hard to say. I think my next step would be to remove the oil strainer and see if you have metal there. That would be a pretty good indication that you have (or at least had, at one point) metal spread through the engine.

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RBGERSON
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Re: Waterpump bearings gone

Postby RBGERSON » Wed Apr 25, 2012 12:51 pm

Virtually none, the water pump housing is completely separate. Unless someone drilled an extra hole someplace in there???
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

dalez
Posts: 10
Joined: Sun Aug 14, 2011 4:31 pm
Location: Albany, NY
Motorcycle: 1981 GL1100 Standard

Re: Waterpump bearings gone

Postby dalez » Wed Apr 25, 2012 9:10 pm

So, does the oil get drawn in from the outside of the filter or pushed through from the inside?

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WingAdmin
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Re: Waterpump bearings gone

Postby WingAdmin » Thu Apr 26, 2012 8:48 am

The front oil pump pumps oil out through the orifice seen here, to the upper left of the pump/water pump drive:

Image

That orifice connects to the hole on the back of the engine cover, shown here just to the right of the water pump:

Image

From there it enters the outside of the filter, and is pushed through the filter medium into the center of the filter. From there, it goes into the bolt, through the holes in the bolt, and exits through the threaded center of the filter mount:

Image

The good news is that the area inside the front engine cover is not part of the sump, and while there is oil there, it is not part of the circulatory system. So if the water pump bearings fell out, there's a fair chance they didn't get into the innards. That said, I'd still have a look at the oil screen, just to be sure.

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RBGERSON
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Re: Waterpump bearings gone

Postby RBGERSON » Thu Apr 26, 2012 9:12 am

I maybe remembering incorrectly but don't the rear bearing on the water pump shaft butt up against the oil seal on the engine block and so the bearing's balls couldn't get in that way?? They would be confined to bouncing around in the water pump housing.
HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB

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WingAdmin
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Posts: 17050
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1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: Waterpump bearings gone

Postby WingAdmin » Thu Apr 26, 2012 9:16 am

RBGERSON wrote:I maybe remembering incorrectly but don't the rear bearing on the water pump shaft butt up against the oil seal on the engine block and so the bearing's balls couldn't get in that way?? They would be confined to bouncing around in the water pump housing.


You know, you're absolutely right - never thought about that until you just mentioned it, but yes, there is actually an O-ring there, and it presses right up against the oil seal. So the only way for the bearings to get out would be for them to be ground up into little bits and find their way out elsewhere...unless they were loose in there, and fell out when the engine cover was removed.

dalez
Posts: 10
Joined: Sun Aug 14, 2011 4:31 pm
Location: Albany, NY
Motorcycle: 1981 GL1100 Standard

Re: Waterpump bearings gone

Postby dalez » Fri May 04, 2012 9:44 pm

Well I replaced the waterpump but didn't check the screen as mentioned. I tried but couldn't get it off. After some research I found out you have to pry the frame to get a bolt out so you can remove it. The motor is running good with no strange noises so we will see how it goes.

Dale




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