New 2008 GL1800 leaking fork seals


Information and questions on GL1800 Goldwings (2001-Present)
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bigrnm
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Joined: Wed Oct 28, 2009 2:11 pm
Location: El Paso, TX
Motorcycle: 2008 GL1800 w/premium audio, comfor package, Navigation/ABS systems

New 2008 GL1800 leaking fork seals

Postby bigrnm » Thu Jul 01, 2010 5:50 pm



Hi all,
I have a 2008 GL1800 that I had the fork seals replaced already. the right one was leaking. The bike has less than 2000 miles on it. the dealer wanted to charge me for them stating that Honda considers that a wear and tear item. I protested saying that it is a brand new bike. What the _ _ _ _?
To make a long story short, honda went ahead and replaced the seals for free. One time deal thing.
I recently heard that the anti-dive system on the GL1800's is what causes the seals to bust. I also heard about disabling the device, and that would prevent the seals from busting.
Any thoughts/comments/ideas about this?
Thanks,
Big "R"



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thrasherg
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Re: New 2008 GL1800 leaking fork seals

Postby thrasherg » Fri Jul 02, 2010 11:31 am

The anti-dive is on the left fork leg, so it would not be the cause of your seal's failure, but it is certainly believed that the anti-dive does cause the left fork seal to fail prematurely. I disconnected the anti-dive and much prefer the way my goldwing brakes.. Highly recomend trying it (only cost $20 for a shim from ebay and 30 minutes of your time to fit the shim) you can always put it back to standard if you don't like it..
The entire suspension system needs a full upgrade in my opinion on the 1800, but that's just my personal opinion, I have the full Traxxion upgrade on the front and back and absolutley love the way my wing handles now, it used to ground itself out in bends and wallow at high speeds in bends, now it just corners and goes, might not be quite as comfortable as a standard wing on bumpy roads, but drives so much better that it was well worth the expense...

Gary

bigrnm
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Motorcycle: 2008 GL1800 w/premium audio, comfor package, Navigation/ABS systems

Re: New 2008 GL1800 leaking fork seals

Postby bigrnm » Fri Jul 02, 2010 11:41 am

Thanks Gary,
Is it difficult to do it myself? Not very mechanically inclined, so step by step instructions would be very helpful.
Usually when someone gives [i]me[i]a time frame, it takes me about 3 times as long.
I know I have to remove the front fender, and I have looked at it, and it has four bolts, two on each side. I believe that is all to the fender. After that, have no idea.
thanks Gary,

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thrasherg
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Re: New 2008 GL1800 leaking fork seals

Postby thrasherg » Fri Jul 02, 2010 11:50 am

Hi Big R,

You have to remove the front section of the front mudguard (4 bolts as you mentioned) then once the mudguard is off, you will see the anti-dive unit on the bottom of the lower left fork. There is a rigid pipe coming into the top of the anti dive unit (it comes from the brake caliper behind the fork leg) and a bleed nipple, then there is one bolt on each side of the anti dive unit (2 bolts total). These 2 bolts hold the anti dive unit together,, you undo them, seperate the upper unit from the lower unit, insert your shim, put the two halfs back together, put 2 new bolts in (the original bolts are too short once you have the shim in, you need bolts about 1/8th of an inch longer), then bolt the front mudguard back on and it's done. It really is easy, and it won't take more than an hour maximum.. It's a bit easier to do if the wing is on it's centerstand.

Gary

bigrnm
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Motorcycle: 2008 GL1800 w/premium audio, comfor package, Navigation/ABS systems

Re: New 2008 GL1800 leaking fork seals

Postby bigrnm » Fri Jul 02, 2010 11:53 am

Thanks Gary,
Good instructions.
One more question. I don't have to mess with the rigid pipe or the brakes, do I?
The anti-dive system will disegage with the pipe intact, right?

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thrasherg
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Location: Plano, TX
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Re: New 2008 GL1800 leaking fork seals

Postby thrasherg » Fri Jul 02, 2010 1:55 pm

Correct, the rigid pipe joins a flexible pipe and that allows you to move the unit around, so no messing about with the brakes or the rigid pipe.

Gary

gareva1
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Re: New 2008 GL1800 leaking fork seals

Postby gareva1 » Fri Jul 02, 2010 4:16 pm

Here are some pictures from Fred Harmon of the anti-dive and some basics about how it works...he describes shimming the ADV, but his way is different than most peoples' methods...he suggests shimming the bolt up by the bleeder valve to reduce brake fluid pressure against the plunger and weaken the ADV system, while most people (including the ebay shim mentioned above) put a shim in between the two halves to block the plunger from actuating, disabling the ADV completely.


http://www.pbase.com/fredharmon/antidive

bigrnm
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Re: New 2008 GL1800 leaking fork seals

Postby bigrnm » Tue Jul 06, 2010 9:23 am

Thanks guys, these really help.

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gogs11uk
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Re: New 2008 GL1800 leaking fork seals

Postby gogs11uk » Thu Jul 08, 2010 6:49 am

Looks like I'm going to have to tackle this at some point real soon as my 1800 is almost rock solid at the front.

Makes cornering on bumpy roads really interesting.

Gordie :o

bigrnm
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Re: New 2008 GL1800 leaking fork seals

Postby bigrnm » Thu Jul 08, 2010 10:02 am

I'm hoping that it will help me a lot when I am riding two up with my wife.

Len
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Re: New 2008 GL1800 leaking fork seals

Postby Len » Fri Jul 09, 2010 9:07 am

I just used a thick washer to disable my anti-dive before converting to full Traxion. ;)

monkeebutt52
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Re: New 2008 GL1800 leaking fork seals

Postby monkeebutt52 » Fri Nov 19, 2010 9:59 pm

Don't let these dealers intimidate you, the fork seals are covered by warranty! I was first told they weren't, don't take no for an answer!!!

Red Ron
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Re: New 2008 GL1800 leaking fork seals

Postby Red Ron » Sat Nov 20, 2010 9:42 am

Len wrote:I just used a thick washer to disable my anti-dive before converting to full Traxion. ;)


I did something like this also. I drilled a hole in a nickel and it is a good fit and did the trick. There are good instructions for this over on the gl1800riders.com board if you do a search.

canon
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Re: New 2008 GL1800 leaking fork seals

Postby canon » Thu Dec 23, 2010 2:46 pm

Your warranty definitely covers fork seal replacement. On my 03 had fork seals replaced threetimes under reular & extended warranty. Finally had Race Tech springs installed at 88k W/Gold valve kit. The GW rides better now than when it was new. Your OEM springs wear out in only around 20k miles. Have that Anti Dive disabled or you will continue having fork seals blow.




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