Integrated Brakes question


Information and questions on GL1800 Goldwings (2001-Present)
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KickerCliff
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Joined: Sun Aug 29, 2010 6:01 pm
Location: Temecula, CA
Motorcycle: 2008 GL1800

Integrated Brakes question

Postby KickerCliff » Sun Aug 29, 2010 6:17 pm



We just had an issue with the back brakes on one of the GL1800s in our group this morning. The pin holding the brake pads came out and the brake pads fell out completely. A call to the dealer uncovered 2 things.

1) They have see this before and know there is an issue of the pins falling out on the 1800
2) They don't keep the pins in stock. They did, however, take one off an old used bike sitting in the back and will replace it when the ordered part is received. (really good dealer)

I was always under the impression that the front and bake brakes were integrated. Back brake with front left. One of the guys in the group said that only the ABS brakes are integrated. Doesn't make sense.

Can someone please explain how the brakes on the GL1800 are integrated?

Thanks
Cliff
:?



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WingAdmin
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Re: Integrated Brakes question

Postby WingAdmin » Mon Aug 30, 2010 6:54 am

They're integrated just as you say, and have been on every Goldwing since 1983, ABS or not - although the 83's linked the front RIGHT with the rear - I don't know at which year/model they switched to the front left.

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Keyboard
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Re: Integrated Brakes question

Postby Keyboard » Mon Aug 30, 2010 9:48 am

Sorry, but the dealer is wrong about the pins falling out being a issue with the GL1800. It is not a common problem as he would have you believe. Maybe it's a problem with the dealership because they take parts off of other bikes and forget to replace them later.

I've had a 2003 and now a 2010 GL1800. In my 7 years of ownership and 70K+ miles, my pins never fell out. I'm also a member of several GL1800 boards and only recall reading about one instance where the pin fell out. That was caused by an improper install of the brake caliper and pads.

And yes, all GL1800 brakes are integrated, ABS or not.
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gareva1
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Motorcycle: 2008 GL1800 Prem Audio

Re: Integrated Brakes question

Postby gareva1 » Mon Aug 30, 2010 11:42 am

KickerCliff wrote:I was always under the impression that the front and bake brakes were integrated. Back brake with front left. One of the guys in the group said that only the ABS brakes are integrated. Doesn't make sense.

Can someone please explain how the brakes on the GL1800 are integrated?

Thanks
Cliff
:?


I see you have an 08...if you have the owners manual, page 80 outlines the operation of the linked braking system, and it applies with or without ABS. I thought it had the proportions there, but it does not...A lot of people think it's 50/50, but that is not correct...it's more like 90/10 or 85/15...when you actuate the rear pedal, the left front caliper has some pistons in it that are linked to the rear braking hydraulic circuit, thus causing your little bit of front braking along with the rear. When you apply front braking, the left caliper is not solidly mounted on the bike, and has a pin in it that allows it to move a little bit like a hinge...when the caliper grabs onto the rotor, the caliper moves slightly upward, engaging a plunger that actuates some of the rear braking circuit. If I remember correctly, the front right plays no part in this arrangement.

It's been a while since I've read about this, so don't take it as gospel...if anyone has a service manual, please chime in with the relevant pages in there if any of this is incorrect.

KickerCliff
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Re: Integrated Brakes question

Postby KickerCliff » Mon Aug 30, 2010 5:59 pm

Keyboard wrote:Sorry, but the dealer is wrong about the pins falling out being a issue with the GL1800. It is not a common problem as he would have you believe. Maybe it's a problem with the dealership because they take parts off of other bikes and forget to replace them later.

I've had a 2003 and now a 2010 GL1800. In my 7 years of ownership and 70K+ miles, my pins never fell out. I'm also a member of several GL1800 boards and only recall reading about one instance where the pin fell out. That was caused by an improper install of the brake caliper and pads.

And yes, all GL1800 brakes are integrated, ABS or not.


I was just checking because there seemed to be "some" confusion. I also have had 2 GL1800s (plus 3 GL1500s and a GL1200). I only have 214,000 miles on the GL1800s though and agree that I have never heard of the pin coming out. The guy it happened to has over 250,000 miles on a GL1800 and one of the bikes in the group just rolled 207,000. The mechanic we spoke with said he has seen it before and knows it should be a concern if the pin isn't torqued down properly.

I have learned since that the front/rear brakes are integrated to the piston rather than the specific side. Since I don't have the service manual I am at other people's mercy to provide information.

I appreciate all the information and am glad I found this forum.

Cliff Philip "Kicker"
Gold Angels Motorcycle Drill Team
Drill Sgt.

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Keyboard
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Re: Integrated Brakes question

Postby Keyboard » Mon Aug 30, 2010 9:28 pm

WOW ... 214,000 miles on your GL1800s. You've got way more experience with Wings than me. And, I just love drill teams. I wish I could ride that good.
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KickerCliff
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Motorcycle: 2008 GL1800

Re: Integrated Brakes question

Postby KickerCliff » Tue Aug 31, 2010 6:11 am

Keyboard wrote:WOW ... 214,000 miles on your GL1800s. You've got way more experience with Wings than me. And, I just love drill teams. I wish I could ride that good.


Keyboard....Trust me, it isn't "riding that good". Just a lot of practice and a LOT OF TRUST for your partner. You should look into it as there are several teams around the US and GWRRA is taking an initiative to start more. Some of the best fun I have ever had on 2-wheels.

ttfn
Cliff Philip "Kicker"
Gold Angels Motorcycle Drill Team
Drill Sgt. :D
goldangels.com

24.4ZOOM

Re: Integrated Brakes question

Postby 24.4ZOOM » Wed Sep 01, 2010 3:49 am

My old wing is an 86, long before ABS. My brakes are linked rear to right front. The single, independent front brake on the handlebar is the left front. ABS or no, I'll wager that yours is set up the same way. Pins falling out? Was there more hardware missing than that? Like a pad retainer? Glad you made it to the shop O.K.

With white knuckles, Patrick

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tfdeputydawg
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Re: Integrated Brakes question

Postby tfdeputydawg » Thu Sep 02, 2010 8:50 am

All 1800's have a "linked" braking system.
What a lot don't know or understand is the left front calipher will rotate upward when the front brake or rear brake is applied and this activates the ADV(anti dive valve) Using only the front brake will also activate the ADV and (this is the kicker) also activates the rear brake!

jerryvanharen
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Re: Integrated Brakes question

Postby jerryvanharen » Wed Dec 01, 2010 11:41 pm

I found this diagram of the GL1800 brakes and it is really an interesting system. With the delay valve, secondary master cylinder and proportioning valve the hand brake lever will operate all 9 caliper pistons and the anti-dive plunger . The rear master cylinder will operate 6 caliper pistons (one right front, two left front and all three rear) and the anti-dive plunger.
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