Antifreeze leak 1200 Interstate


Information and questions on GL1200 Goldwings (1984-1987)
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lukeinmexico
Posts: 36
Joined: Thu Mar 05, 2015 10:33 pm
Location: Flagstaff, AZ
Motorcycle: 1986 1200 Goldwing Interstate

Antifreeze leak 1200 Interstate

Postby lukeinmexico » Mon Dec 07, 2015 5:52 pm



Hello everyone.
I took my 1986 1200 Interstate out for a ride on Saturday just to get all of the fluids moving in the bike (it was in the 40’s). On Sunday I noticed a small puddle of antifreeze on the ground under the bike. Upon inspection I noticed a clamp had failed on the lower radiator hose and there seemed to be fluid leaking from the timing belt cover. After looking at other posts, I realized I needed to check the upper radiator hose and thermostat housing to locate the source of the leak that appeared to be coming from the timing belt cover. After taking off all of the plastic, it appears fluid is leaking from the thermostat cover.
Earlier this year I had an issue with the themo switch and replaced it along with two new radiator hoses and clamps.
So here are my questions:
Since I need to remove the radiator to get to the thermostat housing, do you think it would be wise to replace the timing belts, water pump and thermostat while the radiator is out?
The bike has approximately 40,000 miles, and I have no information on when or if these maintenance repairs have ever been done.
If I decide to do the thermostat, water pump and timing belts can anyone recommend parts (which parts are appropriate; the benefit of using OEM parts verses non-OEM parts; what o-rings/o-ring kits will I need to complete this repair)?
Are there any special tools needed to complete this job?
Is there any danger of letting the bike sit outside without coolant (I drained it because I didn’t want animals drinking it)?
Also, can people recommend links to other good posts showing how to do these repairs?
Thank you in advance for you help and patience!
-Bobby



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twocams
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Re: Antifreeze leak 1200 Interstate

Postby twocams » Mon Dec 07, 2015 11:17 pm

I would replace belts,thermostat ,radiator cap,Coolant, hoses if needed. Not sure why you would replace the water pump? I would use all aftermarket. I just did all that,not pump. Cost me $45 I went to place that sells Orings. Cost me .75 for the 2 orings for thermostat/water pump outlet pipe.

Twocams

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WingAdmin
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Re: Antifreeze leak 1200 Interstate

Postby WingAdmin » Tue Dec 08, 2015 9:33 am

twocams wrote:I would replace belts,thermostat ,radiator cap,Coolant, hoses if needed. Not sure why you would replace the water pump? I would use all aftermarket. I just did all that,not pump. Cost me $45 I went to place that sells Orings. Cost me .75 for the 2 orings for thermostat/water pump outlet pipe.

Twocams


Aftermarket is fine, EXCEPT if you are going to replace the water pump. Do not use anything but OEM for that.

flash1942
Posts: 129
Joined: Fri Jan 24, 2014 4:37 pm
Location: Midwest
Motorcycle: '84 Aspencade

Re: Antifreeze leak 1200 Interstate

Postby flash1942 » Tue Dec 08, 2015 10:21 am

I had the very same problem with my 1200. I would have sworn it was coming from the belt covers too but in fact it was coming from the T-stat housing O ring. A stock O ring did not fix it so I went to O rings and More to get a .25mm oversize one and that fixed it. Don't know why a OEM didn't fix it though.

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lukeinmexico
Posts: 36
Joined: Thu Mar 05, 2015 10:33 pm
Location: Flagstaff, AZ
Motorcycle: 1986 1200 Goldwing Interstate

Re: Antifreeze leak 1200 Interstate

Postby lukeinmexico » Tue Dec 08, 2015 1:04 pm

Thanks Twocams and Flash1942!
Can you give me any info on the type of coolant to use?
How can you tell if it's silica free?
Thanks for the replies!
-Bobby

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lukeinmexico
Posts: 36
Joined: Thu Mar 05, 2015 10:33 pm
Location: Flagstaff, AZ
Motorcycle: 1986 1200 Goldwing Interstate

Re: Antifreeze leak 1200 Interstate

Postby lukeinmexico » Tue Dec 08, 2015 2:54 pm

Just a quick note,
I called Prestone and they said they recommend the yellow bottle, extended life anti-freeze which does not contain silicates.
They also said their 50/50 diluted antifreeze does not contain silicates as well.
In the future, I'll probably just stick to Honda antifreeze.
Thanks for posting!
-Bobby

flash1942
Posts: 129
Joined: Fri Jan 24, 2014 4:37 pm
Location: Midwest
Motorcycle: '84 Aspencade

Re: Antifreeze leak 1200 Interstate

Postby flash1942 » Wed Dec 09, 2015 10:18 am

My opinion is that if the bottle of antifreeze says "phosphate and silicate free" then it's ok to use. If it's not on the bottle then I will move on until I find one that does. I would be hesitant to just take a person's word for it,especially if it's not on the bottle in print. Trust but verify..............................

I use Oreillys brand of concentrate that says silicate and phosphate free, mix 50/50 with distilled water.




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