water pump???????


Information and questions on GL1100 Goldwings (1980-1983)
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philm
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Joined: Mon Oct 04, 2010 5:53 pm
Location: st.clair shores,mi.
Motorcycle: 1980 GL1100

water pump???????

Postby philm » Mon Dec 20, 2010 8:52 pm



about a month ago i purchased a 1980 GL1100 that has been sitting for about 4 years. i removed the 2 covers that go over the timing belts.i then turned over the engine by the using the bolt that holds on the 2 cog timing gears on. it turns over so far so good. i then started to drain the engine oil and coolant. got about 2 qts of oil and 1/2 gal of pond water out of the rad. after reading the article on water pump removal i figured i better remove the water pump. and check it out. after removing the cover with the water pump in it i tried to turn the water pump shaft. no go froze up. so here`s my question since the water pump was frozen did i do other damage in the engine??? when i turned it over (oil pump or pumps or drive chain) what do i check next??



Bouvier1
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Motorcycle: 2007 Gl 1800A

Re: water pump???????

Postby Bouvier1 » Tue Dec 21, 2010 6:07 am

If you have not tried to run the engine (ie via the starter) then you will have done no damage to the engine. You have simply drained the water below the water pump. You would only damage the engine if you are running it and the radiator/pipes are frozen as it would warm up in areas that has ice in them which in turn will expand due to the heat causing distortion etc.

Bouvier1

jackknife
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Location: Phoenix, AZ
Motorcycle: 1979 GL1000

Re: water pump???????

Postby jackknife » Tue Dec 21, 2010 8:45 am

I believe the OP was saying that the water pump was locked up from not being used, not that the water was frozen.

And, philm I really don't know if you could have caused damage. I would think that the weak link would be the tab at the end on the water pump shaft. If it didn't turn with the engine, it should have been sheared.

Edit: I guess the tab isn't on the water pump. I haven't opened up my engine. Maybe someone else will come around to answer this. Is the tab on the end on the transmission main shaft?

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virgilmobile
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Location: Denham Springs,La.
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Previously owned
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81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: water pump???????

Postby virgilmobile » Tue Dec 21, 2010 2:49 pm

Question...In "removing the water pump"did you remove the cover to expose the pump or remove the entire front of the engine and hold the pump in your hand to determine it was locked up?When the pump is in the block it connected to the oil pump(chain driven)via an open fork.

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WingAdmin
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1982 GL1100A Aspencade (sold)
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Re: water pump???????

Postby WingAdmin » Tue Dec 21, 2010 4:00 pm

The water pump has a slotted shaft, which you can see in this picture:

Image

It is driven off the oil pump, which has a shaft with a tab cut in the end of it, that fits into the water pump slot:

Image

If you just removed the small front cover that covers up the water pump impeller, then the water pump will have still been locked to the oil pump. If you crank the engine over, you should see the water pump turning with it.

If you have removed the entire front engine cover, as shown in the pictures above, and the water pump is still seized, you've got one a few things going on:

- Water pump isn't actually seized - it's ALMOST seized, but enough that the engine can turn it (but too stiff for your fingers to do it). There's an awful lot of torque turning that pump!

- Water pump is seized, and either the water pump shaft slot or oil pump shaft tab is broken/sheared. You'll be able to see this visually.

- Water pump is seized, and the oil pump chain is broken. You can tell if this is the case, because when you crank the engine, the shaft in the middle of the oil pump won't turn.

philm
Posts: 2
Joined: Mon Oct 04, 2010 5:53 pm
Location: st.clair shores,mi.
Motorcycle: 1980 GL1100

Re: water pump???????

Postby philm » Tue Dec 21, 2010 7:38 pm

I had the front of the engine off,with the water pump in it. i looked at the end of the oil pump shaft and the tab was still there. i reached in with a pair of needle nose and tried to move the shaft. only moved maybe 1/8 inch back and forth.clamped a pair of vise grips onto the water pump shaft and NO GO....froze up . so...........whats next to check ???

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WingAdmin
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1982 GL1100A Aspencade (sold)
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Re: water pump???????

Postby WingAdmin » Tue Dec 21, 2010 7:49 pm

Turn the engine over and see if the oil pump shaft turns. The water pump is obviously going to have to be replaced.

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RoadRogue
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Re: water pump???????

Postby RoadRogue » Wed Dec 22, 2010 12:53 am

Turn the crankshaft to see if the pump shaft turns, do not turn the pump shaft on its own,you will shear something off. 4 pistons and the crank shaft is a lot of wieght and friction to overcome by turning that "little" water pump shaft.
Ride safe, Todd
Over night campers welcome

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WingAdmin
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Posts: 17045
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (wife's!)
1998 XV250 Virago (sold)
2007 Aspen Sentry Trailer

Re: water pump???????

Postby WingAdmin » Wed Dec 22, 2010 10:29 am

That's what I meant by cranking the engine - turn the crankshaft bolt by hand at the rear of the engine, and see if the pump shaft turns.

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virgilmobile
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Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: water pump???????

Postby virgilmobile » Wed Dec 22, 2010 12:10 pm

To clarify...The shaft in the oil pump that drives the water pump will not move with needle nose pliers.It is a solid shaft,chain driven off the engine.It will turn as the engine turns.Also The water pump will feel stiff(not very)when turning the impeller.It has a spring loaded mechanical seal on it.It should feel smooth with no side or end play.Virgil




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