Front brake caliper


Information and questions on GL1100 Goldwings (1980-1983)
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Ferdy
Posts: 4
Joined: Fri Oct 11, 2019 2:30 pm
Location: Sioux Falls S.D.
Motorcycle: 1983 GL1100A

Front brake caliper

Post by Ferdy »



Ok first time poster. I have a 1983A and the other day I went for a ride. I noticed after I had came to a stop and the light turned green, the front end dipped and i was stuck. What i had determined is the front brake caliper will not release. Its the caliper on the right hand side while sitting on the bike. I believe the integrated side. Front and rear combo. You all have much more knowledge than me. Could anyone tell me where to begin? what is the most common cause for this condition? One other bit of info. The cups in the caliper arent seized but when i tried to compress the cups in the caliper i cannot get them to go in. just wondering whats going on. Thank you in advance. Dave



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WingAdmin
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1982 GL1100A Aspencade (sold)
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Re: Front brake caliper

Post by WingAdmin »

Ferdy wrote:
Tue Oct 06, 2020 4:07 pm
Ok first time poster. I have a 1983A and the other day I went for a ride. I noticed after I had came to a stop and the light turned green, the front end dipped and i was stuck. What i had determined is the front brake caliper will not release. Its the caliper on the right hand side while sitting on the bike. I believe the integrated side. Front and rear combo. You all have much more knowledge than me. Could anyone tell me where to begin? what is the most common cause for this condition? One other bit of info. The cups in the caliper arent seized but when i tried to compress the cups in the caliper i cannot get them to go in. just wondering whats going on. Thank you in advance. Dave
One of the most common failures. The return port in the master cylinder is clogged, usually caused by infrequent brake fluid changes.

Look at How to rebuild your front master cylinder, in particular step #8a.

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newday777
Posts: 1877
Joined: Tue Jan 11, 2011 5:21 pm
Location: Milford NH summer/fall & Oceanside, CA winters(N San Diego) with lots of miles riden between
Motorcycle: 2008 Cabernet Red. Level 4

1983 GL1100A Wineberry 36,000 miles

1975 CB750 K5 Planet Blue 7,800 miles

1976 CB750 K6 Anterris Red 25,000 miles

Past rides
1999A Restored from PO neglect & sold at 19,000 miles

1999SE Totaled by cager at 105,000 miles

Re: Front brake caliper

Post by newday777 »

A quick test to tell if it is the return port being clogged is crack open the bleeder on the caliper that is locked(put a one man bleeder on it to capture the fluid). Close the bleeder before you hit the pedal or lever. If fluid squirted out when you cracked the bleeder open, without adding more pressure, then the return port is plugged and needs to be cleared as in the link posted by WingAdmin. The wheel should turn freely once the pressure is released.

Did you clean out the caliper seal grooves of the old crusty gunk and put in a rebuild kit?

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Ferdy
Posts: 4
Joined: Fri Oct 11, 2019 2:30 pm
Location: Sioux Falls S.D.
Motorcycle: 1983 GL1100A

Re: Front brake caliper

Post by Ferdy »

Thank you for your replies guys. Time is limited to weekends and hope to try your ideas and a few other bits of info I have read. Looking at rebuild kits etc... Wondering if new front brakes lines are available? And not going to lie, a little frightened when it comes to bleeding the brakes. I will keep you all posted. Thank you all for taking the time to look at this post and share your knowledge. Dave

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newday777
Posts: 1877
Joined: Tue Jan 11, 2011 5:21 pm
Location: Milford NH summer/fall & Oceanside, CA winters(N San Diego) with lots of miles riden between
Motorcycle: 2008 Cabernet Red. Level 4

1983 GL1100A Wineberry 36,000 miles

1975 CB750 K5 Planet Blue 7,800 miles

1976 CB750 K6 Anterris Red 25,000 miles

Past rides
1999A Restored from PO neglect & sold at 19,000 miles

1999SE Totaled by cager at 105,000 miles

Re: Front brake caliper

Post by newday777 »

Yes Dave, brake lines are available but get stainless steel lines not rubber.
Bleeding brakes is not rocket science. On the 83 rear pedal master cylinder bleed linked system you bleed the right front caliper first then bleed the rear caliper. A one man bleeder helps.

One man brake bleeder
https://www.fcpeuro.com/products/one-ma ... oup%20%231




Rear caliper rebuild



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User avatar
newday777
Posts: 1877
Joined: Tue Jan 11, 2011 5:21 pm
Location: Milford NH summer/fall & Oceanside, CA winters(N San Diego) with lots of miles riden between
Motorcycle: 2008 Cabernet Red. Level 4

1983 GL1100A Wineberry 36,000 miles

1975 CB750 K5 Planet Blue 7,800 miles

1976 CB750 K6 Anterris Red 25,000 miles

Past rides
1999A Restored from PO neglect & sold at 19,000 miles

1999SE Totaled by cager at 105,000 miles

Re: Front brake caliper

Post by newday777 »

On rebuilding master cylinders, many people don't know or forget to prime the master cylinder, known as bench bleeding, before the system gets bled. Not doing so they don't get good brake pressure.
To bench bleed the master cylinders you use the banjo bolt at the master as you first bleed point to get the air out of the master cylinder. Pump up master cylinder 5 pumps and hold lever/pedal, then with a rag below the banjo bolt to capture brake fluid crack open the banjo bolt like you would a bleed valve. Tighten bolt and repeat until all you get is fluid. Then bleed the system as outlined in the service manual.

Tip....
Cover painted surfaces to protect from brake fluid.
Have a spray bottle of water to wash off brake fluid drips on the painted surfaces right away and a clean rag to wipe down. Brake fluid eats paint.

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WingAdmin
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Posts: 21356
Joined: Fri Oct 03, 2008 4:16 pm
Location: Strongsville, OH
Motorcycle: 2000 GL1500 SE
1982 GL1100A Aspencade (sold)
1989 PC800 (sold)
1998 XV250 Virago (sold)
2012 Suzuki Burgman 400 (wife's!)
2007 Aspen Sentry Trailer

Re: Front brake caliper

Post by WingAdmin »

newday777 wrote:
Wed Oct 07, 2020 9:17 am
On rebuilding master cylinders, many people don't know or forget to prime the master cylinder, known as bench bleeding, before the system gets bled. Not doing so they don't get good brake pressure.
To bench bleed the master cylinders you use the banjo bolt at the master as you first bleed point to get the air out of the master cylinder. Pump up master cylinder 5 pumps and hold lever/pedal, then with a rag below the banjo bolt to capture brake fluid crack open the banjo bolt like you would a bleed valve. Tighten bolt and repeat until all you get is fluid. Then bleed the system as outlined in the service manual.

Tip....
Cover painted surfaces to protect from brake fluid.
Have a spray bottle of water to wash off brake fluid drips on the painted surfaces right away and a clean rag to wipe down. Brake fluid eats paint.
Brake fluid is hydraulic oil - water won't clean it. Use a plastic-safe brake cleaner solvent, which will instantly dilute and wash away spilled brake fluid.

https://www.amazon.com/CRC-05089-BRAKLE ... ref=sr_1_2

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Ferdy
Posts: 4
Joined: Fri Oct 11, 2019 2:30 pm
Location: Sioux Falls S.D.
Motorcycle: 1983 GL1100A

Re: Front brake caliper

Post by Ferdy »

Thanks for all the input guys.. Greatly appreciated.



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