Flushing Cooling System


Information and questions on GL1500 Goldwings (1988-2000)
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pbourgoin
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Flushing Cooling System

Postby pbourgoin » Sun Nov 15, 2015 12:09 pm



Doing some work on my new to me gl1500 and drained the coolant while replacing the timing belts and it came out brown so after the belts I want to flush and refill. Anyway my question does the coolant reservoir have a drain to empty it also or is there a way to get the old coolant out of it so I can fill it fresh also??


I got this Goldwing for my wife........ Good trade huh??? :D

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flogger
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Re: Flushing Cooling System

Postby flogger » Mon Nov 16, 2015 12:35 pm

No it doesn't. I was following my Clymer manual doing the same thing last weekend. It made it sound like you could just take out one bolt and remove the reserve tank, lol... Lots more has to be removed. I decided to syphon it empty instead which worked nicely... It is only a little over a half a quart. I used a clear tube and it was easy to keep it out of the mouth. Once I saw it filling the tube I just let it drain into my drain pan with the rest of the old fluid. Interested in hearing what others have done...
1996 GL1500SE GoldWing
1983 GL650i SilverWing
1981 CB750C Custom
1981 CM400 (project)

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WingAdmin
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Re: Flushing Cooling System

Postby WingAdmin » Tue Nov 17, 2015 1:53 pm

flogger wrote:No it doesn't. I was following my Clymer manual doing the same thing last weekend. It made it sound like you could just take out one bolt and remove the reserve tank, lol... Lots more has to be removed. I decided to syphon it empty instead which worked nicely... It is only a little over a half a quart. I used a clear tube and it was easy to keep it out of the mouth. Once I saw it filling the tube I just let it drain into my drain pan with the rest of the old fluid. Interested in hearing what others have done...


I did the same thing. Taped a clear vinyl tube to the end of my shop vac, then dipped it into the coolant reservoir and sucked up all the muck. Refilled it with distilled water and repeated until all the goo came up out of the bottom.

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pbourgoin
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Re: Flushing Cooling System

Postby pbourgoin » Tue Nov 17, 2015 5:37 pm

I removed the hoses from the tank and shoved a hose into it and flushed till all the muck was gone then used the shop vac to drain it again. added fresh coolant and reattached hoses all seems well.. Thanks
I got this Goldwing for my wife........ Good trade huh??? :D

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Aussie81Interstate
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Re: Flushing Cooling System

Postby Aussie81Interstate » Tue Nov 17, 2015 5:44 pm

If you remove the radiator drain bolt -and then after a minute or two take the radiaor cap off - it will drain from the overflow into the radiator under gravity - and you could also run your water hose into the overflow tank slowly and it will then run through the radiator.

If the fluid coming out was brown, I would flush at least two or three times with fresh water in the radiator - basically get it up to temperature then drain it out - keep doing that until it is clean before putting new coolant in.

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pbourgoin
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Re: Flushing Cooling System

Postby pbourgoin » Tue Nov 17, 2015 6:01 pm

Aussie81Interstate with the amount of muck that was in the tank I didn't want all that going thru the cooling system so I cleaned it separately. I flushed and re-flushed the cooling system with plain water till it run out clear then did it 2 more times.. Thanks for the help guys...
I got this Goldwing for my wife........ Good trade huh??? :D

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OldZX11Rider
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Re: Flushing Cooling System

Postby OldZX11Rider » Mon Dec 14, 2015 5:20 pm

I loosened the radiator cap and the overflow cap, then removed the drain bolt out of the water pump.
The antifreeze was dark green and tested good to -25°F. I still replaced it because I didn't know how old it was.
When I fill it all up again, is there a "burping" procedure that needs to be done?
Didn't see a How To Change Antifreeze guide, so I'm searching the pages. Thanks in advance.
For he is the minister of God to thee for good. But if thou do that which is evil, be afraid; for he beareth not the sword in vain:

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MikeB
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Re: Flushing Cooling System

Postby MikeB » Mon Dec 14, 2015 6:11 pm

This is from the from the Service Manual:

I guess that is kind of a "burping procedure". It has always worked for me with the GL1500.
MikeB
Tacoma, WA, USA

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OldZX11Rider
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Re: Flushing Cooling System

Postby OldZX11Rider » Mon Dec 14, 2015 6:17 pm

Thank you Mike. I'm going to do this tomorrow before I head out on another ride. Thanks again. :D
For he is the minister of God to thee for good. But if thou do that which is evil, be afraid; for he beareth not the sword in vain:

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WingAdmin
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Re: Flushing Cooling System

Postby WingAdmin » Tue Dec 15, 2015 11:40 am

There wasn't one before, but there is now: How to change (and optionally flush) your coolant

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OldZX11Rider
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Re: Flushing Cooling System

Postby OldZX11Rider » Tue Dec 15, 2015 12:27 pm

Thank you WingAdmin. Will check it out right now. Just got back from Honda with a New jug of coolant.


For he is the minister of God to thee for good. But if thou do that which is evil, be afraid; for he beareth not the sword in vain:


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