Water pump question


Information and questions on GL1200 Goldwings (1984-1987)
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billcountryman
Posts: 15
Joined: Sat Jul 28, 2012 9:54 am
Location: Mesa, Arizona
Motorcycle: 1984 GL1200 Interstate

Water pump question

Postby billcountryman » Thu Nov 29, 2012 5:41 pm



I've a 1984 Goldwing GL1200. While working on this bike I thought I change out the thermostat. Found out there wasn't one in place. It wants to run hot on me. I live in Phoenix but right now the weather's really good. I've learned that Carquest 62438 works on this bike so wanted to see if anyone could verify that. Also wondering about a method to check to see if the water pump is working properly. I'm wondering if I can check the flow through the radiator with the cap off? Any ideas? Thanks. Bill



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virgilmobile
Posts: 7663
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Water pump question

Postby virgilmobile » Fri Nov 30, 2012 2:01 pm

Don't have a part number for the thermostat but personally I'd take off the front cover to the water pump and see if there is any lateral movement in the impeller.The bearings can be bad and the pump not leak and pump OK.

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newday777
Posts: 507
Joined: Tue Jan 11, 2011 5:21 pm
Location: Milford NH and Oceanside, CA (N San Diego)
Motorcycle: 2008 Cabernet Red. Level 4

1983 GL1100A Wineberry to sell 36,000 miles

1999A Restored and sold at 19,000 miles

1999SE Totaled by cager at 105,000 miles

Re: Water pump question

Postby newday777 » Sat Dec 01, 2012 9:11 am

Copied from http://www.goldwingfacts.com/forums/10- ... mbers.html

Be sure to replace the hoses too.

He lists a stant thermostat number which you can cross reference if you want to.



just to recap parts numbers for my 85 gl1200a.

advance auto parts, radiator hose: pn/ E71604CS. 11.99

Stant, Thermostat: pn/ 13868 7.98
Radiator Hose

GL1000, GL1100, GL1200 (Cut in halfto make2 hoses) NAPA - 7733 Gates - 21008
Last edited by newday777 on Sat Dec 01, 2012 10:02 am, edited 1 time in total.

billcountryman
Posts: 15
Joined: Sat Jul 28, 2012 9:54 am
Location: Mesa, Arizona
Motorcycle: 1984 GL1200 Interstate

Re: Water pump question

Postby billcountryman » Sat Dec 01, 2012 9:53 am

Thanks I appreciate the. Help

billcountryman
Posts: 15
Joined: Sat Jul 28, 2012 9:54 am
Location: Mesa, Arizona
Motorcycle: 1984 GL1200 Interstate

How to check a water pump

Postby billcountryman » Mon Dec 03, 2012 8:33 pm

I'm back with a question on how to know if a water pump is bad. It's a 1984 Honda Goldwing GL1200 and it's wanting to run a little hot. There is no thermostat in the bike and while riding I heard a high pitched squeal which I figured was the fan bearings. I pulled the fan and I'm not so sure that's it.......will the water pump squeal while driving then when I come to an idle at a stop light quit? I've taken it apart at the thermostat housing and can see the impellers (there is a little wobble but not a lot)......should they spin freely by hand or are they drove right off the cam or crank?

User avatar
virgilmobile
Posts: 7663
Joined: Sun Sep 19, 2010 5:39 pm
Location: Denham Springs,La.
Motorcycle: 1988 GL1500 I
Previously owned
78 GL1000
81 GL1100
82 GL1100 I
83 GL1100 I
83 GL1100 standard
84 GL 1200 I

Re: Water pump question

Postby virgilmobile » Tue Dec 04, 2012 7:51 am

It is direct drive so there should be no rotation slack.it should have NO lateral play.There are 2 sealed roller bearings in there.They can dry up.Not having a thermostat can lead to progressive rise in temp but remember it's going to run around 180-190 normally.The squeal is usually isolated to a bearing.Timing belt idler has them too.Probe and listen for it's location.

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newday777
Posts: 507
Joined: Tue Jan 11, 2011 5:21 pm
Location: Milford NH and Oceanside, CA (N San Diego)
Motorcycle: 2008 Cabernet Red. Level 4

1983 GL1100A Wineberry to sell 36,000 miles

1999A Restored and sold at 19,000 miles

1999SE Totaled by cager at 105,000 miles

Re: How to check a water pump

Postby newday777 » Tue Dec 04, 2012 9:45 am

billcountryman wrote: I've taken it apart at the thermostat housing and can see the impellers (there is a little wobble but not a lot)......should they spin freely by hand or are they drove right off the cam or crank?


You won't see the impeller from the thermostat housing. The thermostat is on top of the motor. If you are saying the front cover of the water pump w/hose at the water pump, you will see the impeller, no free spinning as it is driven by the oil pump shaft at the back of water pump. There should be no play in the impeller.
Did you remove the radiator to get to the thermostat on top of the motor? That is where the tstat is located. There is an o-ring needed for that housing too. Replace the o-rings with new ones, don't reuse them and especially don't try to use a sealer on them to go cheap.
Do you have the repair manual for your bike? #1 tool needed.
Have looked at the how to section on the forum? Many good helps there.




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