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Discussion Starter · #1 ·
I have a small coolant leak on my 2002 GW 1800 :sadguy:
I'm wondering if anyone here has ever changed any of the
coolant hoses on their 1800 ? I have removed the cowl and
a couple of other sections from the front of the fairing and
can now get a better look at the hose that I think is leaking,
but can't get to the hose clamps :lash: I'm now thinking that
I will have to remove the fairing ???? If so, that looks as if it's
going to be a big job. I do want to let people know that on the
2002 1800, Honda did not insulate the brake fluid line in an area
that they should of, and as I checked that line, I can see that
it's been rubbing a bracket, and that's causing a dent in the line,
and it will in time cause the loss of the break fluid. There is also
a section on the fairing that is rubbing the coolant hose, and I'm
thinking that's where the leak is. Looking at the fairing I can see
what looks like coolant has run down it, and that's the area that
the coolant was dripping from. So, I would suggest that some
should take the time to check their break fluid line, and coolant
hose for rubbing and wear. I will try to resize some photos of this
and post them so you all will be able to see what I'm dealing with.
Now.... Again, has anyone ever changed any of their coolant hoses
on their GW 1800 ?
 

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hoses

Roger,

I pulled the engine out of my 03 last summer (ADG). I checked all of the hoses at that time and didn't see any reason to change them. They were all pliant and didn't have any cracks or signs of age. The bike is known to have clamps that either loosen or weren't tightened properly at assembly. If your seeing signs of leakage, I would strongly suspect clamps first.

Richard
 

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Discussion Starter · #3 ·
Richard,
Thank very much for the info. I will take your advice on checking the clamps first. I wish we could get to all the clamps, but from what I've seen so far, The only clamps I can get to are the clamps on the radiator hoses. Everything beyond that I cant even see. So in order for me to be able to get to those water hoses, I have to remove the engine ? Sure wish there was an better way of doing it.
 

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hoses

Well, no that wouldn't be the preferred way. There are several under the gas tank. While you're in there, check the ground terminal. It's another common huckleberry. That coolant hose connection under the tank is usually the issue. You really don't want to pull the inner fairing, unless there isn't any other way. I didn't need to, but you might be able to get to some of the big hose clamps by removing the header covers. Good luck.

Richard
 

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Discussion Starter · #5 ·
Snowclem,
Thanks for the input on the problem I'm having. I just uploaded a few photo's showing the area of the bike that I'm dealing with now. In the photo's you'll see that I did remove a inner section of the fairing, and by doing that, It did open up a view of the radiator and hoses. I'm real unhappy because I can't get to all of the hose clamps. I was able to get to one, and it was a tad bit lose, so I tightened it up a bit. I did start the engine this evening and let it warm up until the cooling fans came on. I was in hopes of seeing the leak but I didn't see anything, not one drop. Now I'm wondering if that leak was from the small hose clamp that I tightened up... Hmmmm Just don't know. I'm going to take the bike on the open highway the warm day we have, get it good and warmed up, then check it again.

The hose that you speak of under the fuel tank, Can I get to that hose without having to mess with the fuel tank? Any advice is more than appreciated..... Thanks again
 

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There's two plastic three way yokes that are a known 'weep' issue. They're only accessible properly by removing the fuel tank...however you would notice that on the rear kinda under the plastic engine covers for oil and coolant res check.

I've had a few issues with coolant 'weeping' at the two small crossover tubes at the top front of the rad...near the top front 'big' hoses and on the big hoses themselves. Yes, the gear clamp tighteners are hard to get at. Sometimes you can reach them with a wrench instead of a phillips driver...be creative. Hoses are tight in there behind the middle spoiler, and I've noticed similar wear marks as you describe...but I've never actually seen anything wear through.

The rad material on GL1800's is REALLY soft. You can actually easily bend and distort the fittings. I'm surprised they don't leak more often they do. On at least one occasion, the only way I could get the 'weeping' stopped was to wrap teflon tape around the rad fitting. Usually a good snug on the gear clamps will do it.
 

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Discussion Starter · #7 ·
Dizzy,
Thank you for the input. The small crossover tube that you speak of, I did tighten the upper tube's clamp on the left side just a bit. and that's area is where I find the coolant leaking. Knock on wood, so far I've not seen any coolant behind the side covers that you mentioned. I hope that never happens because how does one remove the fuel tank? I'm placing an order for a shop manual asap because there are so many things I want to know, and I'd probably drive everyone here just a tad bit crazy if I started asking... LOL I will say that I'm very happy that I found the site, it seems that for the most of it, the people here are kind, and helpful when they can be, and that's great.
 

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this will help

Roger,

If you have an occasion coming up, that someone would buy you a gift for, have them get you the item below. I have them and I think that they will save the average guy that wants to work on his own GL1800, 10X what they cost within the 1st year of ownership. I have done more to my and my buds bikes because of them, than I would ever have imagined. They don't replace the owners manual, but they do show you how to do most of what anyone would want to do.

http://wingstuff.com/products/33308-fred-harmon-s-maintenance-dvd-set-2001-2013-gl1800

Richard
 

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I agree.I bought the set 2 years ago and now do all my maintenance from freds vidios.He will show how to take the gas tank out.
 
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