Caliper mount touching disc

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tallnwise
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Caliper mount touching disc

#1

Post by tallnwise »

Hi there,

I have begun a project to rebuild my rear brakes on a 1980 GL1100 Standard.

I have removed the calipers, I notice that the mount is touching the disc on the outer edge (away from bike).
20211002_110736.jpg
20211002_110736.jpg (81.2 KiB) Viewed 325 times
20211002_110800.jpg
20211002_110800.jpg (74.96 KiB) Viewed 325 times
How do I adjust that?

Thanks,
Dan.
1980 GL 1100
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flyin900
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Re: Caliper mount touching disc

#2

Post by flyin900 »

There could be a spacer or washer incorrectly installed or backwards in place.

Check a Honda parts fiche for all the pieces that are required back there and see if there is something missing or backwards in the installation.
Current Bikes:

1966 CL77 - Honda 305cc - Dual purpose - "Gentleman's Scrambler" was a period moniker.
1967 CL175K0 - Low production number with #802 engine serial- winter 2019/2020 full restoration.
1972 CB350F - Baby Four with low mileage - Cosmetic refresh to the next level 2021/2022.
1978 CB550K - Very original bike with only 7499 Km. from new - light cleanup and refresh done.
1983 CB1100F - Canadian model - DOHC Supersport in pristine low kilometre condition from new.
1984 GL1200 - Standard model in showroom condition - two owner bike from new.
1984 CX650E - Restored summer 2017 - a rare Eurosport model - excellent one owner bike.
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tallnwise
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Re: Caliper mount touching disc

#3

Post by tallnwise »

I check the parts ficke out and state of the axle -- it seems fine. Any other thoughts?

Thanks,
Dan.
1980 GL 1100
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flyin900
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Re: Caliper mount touching disc

#4

Post by flyin900 »

Was it rubbing the disc prior to removing the caliper? My experience is normally a washer or spacer is off when that happens. How about a better picture of the whole assembly with the axle and spacers/washers visible?
Last edited by flyin900 on Sat Oct 02, 2021 6:51 pm, edited 1 time in total.
Current Bikes:

1966 CL77 - Honda 305cc - Dual purpose - "Gentleman's Scrambler" was a period moniker.
1967 CL175K0 - Low production number with #802 engine serial- winter 2019/2020 full restoration.
1972 CB350F - Baby Four with low mileage - Cosmetic refresh to the next level 2021/2022.
1978 CB550K - Very original bike with only 7499 Km. from new - light cleanup and refresh done.
1983 CB1100F - Canadian model - DOHC Supersport in pristine low kilometre condition from new.
1984 GL1200 - Standard model in showroom condition - two owner bike from new.
1984 CX650E - Restored summer 2017 - a rare Eurosport model - excellent one owner bike.
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tallnwise
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Posts: 68
Joined: Sat Mar 31, 2007 10:50 pm
Location: Cary, NC

Re: Caliper mount touching disc

#5

Post by tallnwise »

I do not remember it rubbing, however my brakes used stick -- therefore the rebuild.

Do do these help?
20211002_173249.jpg
20211002_173249.jpg (123.58 KiB) Viewed 298 times
20211002_173309.jpg
20211002_173309.jpg (121.1 KiB) Viewed 298 times
1980 GL 1100
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flyin900
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Re: Caliper mount touching disc

#6

Post by flyin900 »

The outer section looks correct on your installation. If you check the parts fiche on the inside part of the lower rear caliper bracket where the axle goes through closest to the wheel, there is a washer/spacer shown on the rear brake parts fiche. If you are missing that washer/spacer then that is your problem with the correct alignment.
Current Bikes:

1966 CL77 - Honda 305cc - Dual purpose - "Gentleman's Scrambler" was a period moniker.
1967 CL175K0 - Low production number with #802 engine serial- winter 2019/2020 full restoration.
1972 CB350F - Baby Four with low mileage - Cosmetic refresh to the next level 2021/2022.
1978 CB550K - Very original bike with only 7499 Km. from new - light cleanup and refresh done.
1983 CB1100F - Canadian model - DOHC Supersport in pristine low kilometre condition from new.
1984 GL1200 - Standard model in showroom condition - two owner bike from new.
1984 CX650E - Restored summer 2017 - a rare Eurosport model - excellent one owner bike.
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tallnwise
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Posts: 68
Joined: Sat Mar 31, 2007 10:50 pm
Location: Cary, NC

Re: Caliper mount touching disc

#7

Post by tallnwise »

Is this what you are referring to #1?
10-3-2021 7-40-01 AM.png
10-3-2021 7-40-01 AM.png (87.92 KiB) Viewed 261 times
Guess I will need to disassemble the wheel then.

Thanks,
Dan.
1980 GL 1100
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flyin900
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Re: Caliper mount touching disc

#8

Post by flyin900 »

That's it. If you pull the axle it will fall out if it is actually in place, if not there then that is why your caliper bracket is offset from the correct position.
Current Bikes:

1966 CL77 - Honda 305cc - Dual purpose - "Gentleman's Scrambler" was a period moniker.
1967 CL175K0 - Low production number with #802 engine serial- winter 2019/2020 full restoration.
1972 CB350F - Baby Four with low mileage - Cosmetic refresh to the next level 2021/2022.
1978 CB550K - Very original bike with only 7499 Km. from new - light cleanup and refresh done.
1983 CB1100F - Canadian model - DOHC Supersport in pristine low kilometre condition from new.
1984 GL1200 - Standard model in showroom condition - two owner bike from new.
1984 CX650E - Restored summer 2017 - a rare Eurosport model - excellent one owner bike.
User avatar
tallnwise
Cast Iron Member
Cast Iron Member
Posts: 68
Joined: Sat Mar 31, 2007 10:50 pm
Location: Cary, NC

Re: Caliper mount touching disc

#9

Post by tallnwise »

Thanks much. Went ahead and ordered a NOS so that I have it handy when I do pull the axle, just in case

Best regards,
Dan.
1980 GL 1100
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Track T 2411
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Re: Caliper mount touching disc

#10

Post by Track T 2411 »

https://www.partzilla.com/catalog/honda ... rear-wheel
Actually, the inside spacer (which would move the bracket out) is #3 on this pic. Listed in rear wheel assembly
"I have no special talent. I am only passionately curious." - Albert Einstein

"He that is good with a hammer tends to think everything is a nail" - Abraham Maslow

"If you can't take the time to do it right the first time, how are you ever going to find the time to do it over?" -Unknown

Current Rides:
'Grumpy' - '81 Standard, now fully dressed.
'Layla' - '81 Standard w/dealer installed fairing and Hondaline bags.
'Scarlett' '76 'Survivor' nekkid as a j-bird!

Under Construction:
The 'Jalopy' '78-'79 Mash-up
'Quikie' '81 gl1100I back on the lift, project with the step-son!

In The Shed:
'81 gl1100I barn find aka "Josie, the farmer's daughter." (almost comatose build)
'77 gl1000, roller parts bike.
'82 gl1100I, 'Old Crusty' titled roller parts bike (free!)
'82 gl1100I, My first 'Wing, and an expensive lesson!
New2U Bike? Read Me.
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Re: Caliper mount touching disc

#11

Post by Sagebrush »

In the picture I think I'm seeing the washer mounted on the wrong side of the caliper bracket. Hard to tell with the accumulated crud.
Dean Spalding
Raleigh, NC

"Two things are infinite: the universe and human stupidity; and I'm not sure about the universe." - Albert Einstein

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flyin900
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Re: Caliper mount touching disc

#12

Post by flyin900 »

Yes it is confusing, yet the spacer Track is referring to is the one that fits into the rear wheel seal I think and then the thin washer and then the inside of the caliper bracket. The strange thing is the outer spacer that is shown in Dan's picture of the axle is not shown, at least where I can find it on a parts fiche.
I have a 1981 GL1100 Standard and it shares the same parts as Dan's 1980 GL1100 Standard on the rear section. So he has the correct set up on the outside and if he was missing that spacer #3 on the inside it would be a bigger issue.
IMO I feel the thin washer is missing, which would shift the caliper bracket a MM or so to the outside and correct the rubbing on the rotor.
Could be wrong. crossy.gif
Current Bikes:

1966 CL77 - Honda 305cc - Dual purpose - "Gentleman's Scrambler" was a period moniker.
1967 CL175K0 - Low production number with #802 engine serial- winter 2019/2020 full restoration.
1972 CB350F - Baby Four with low mileage - Cosmetic refresh to the next level 2021/2022.
1978 CB550K - Very original bike with only 7499 Km. from new - light cleanup and refresh done.
1983 CB1100F - Canadian model - DOHC Supersport in pristine low kilometre condition from new.
1984 GL1200 - Standard model in showroom condition - two owner bike from new.
1984 CX650E - Restored summer 2017 - a rare Eurosport model - excellent one owner bike.
User avatar
flyin900
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Posts: 1489
Joined: Sun Jan 10, 2010 3:50 pm
Location: Canada

Re: Caliper mount touching disc

#13

Post by flyin900 »

Ok now I am confused, as I pulled up some pictures of the before disassembly of my 1981 GL1100 as I tore it down a few years ago. You can clearly see the outer spacer on the outside of the axle and caliper bracket and the inner #3 rear wheel spacer, yet I can't see or tell if the washer is in place, yet my rear caliper does not rub.
P1050649.JPG
P1050649.JPG (142.42 KiB) Viewed 205 times
P1050650.JPG
P1050650.JPG (153.93 KiB) Viewed 205 times
Current Bikes:

1966 CL77 - Honda 305cc - Dual purpose - "Gentleman's Scrambler" was a period moniker.
1967 CL175K0 - Low production number with #802 engine serial- winter 2019/2020 full restoration.
1972 CB350F - Baby Four with low mileage - Cosmetic refresh to the next level 2021/2022.
1978 CB550K - Very original bike with only 7499 Km. from new - light cleanup and refresh done.
1983 CB1100F - Canadian model - DOHC Supersport in pristine low kilometre condition from new.
1984 GL1200 - Standard model in showroom condition - two owner bike from new.
1984 CX650E - Restored summer 2017 - a rare Eurosport model - excellent one owner bike.
User avatar
Track T 2411
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Honored Life Member
Posts: 8482
Joined: Thu May 29, 2008 9:37 pm
My Album: http://www.ngwclub.com/gallery/v/wingmans/Track+T+2411/
Location: Prairie du Sac Wisconsin

Re: Caliper mount touching disc

#14

Post by Track T 2411 »

Flyin900... your pictures show the correct setup for the axle. Large flat washer outside, which rests on the shoulder of the axle, caliper mounting bracket, then inner flanged spacer. One thing I've discovered... there are two different flanged spacers; one thicker than the other which changes the offset of the caliper. Possibly different from 80-81's and the '82? I've got parts from both years leading around and could have mixed them...
"I have no special talent. I am only passionately curious." - Albert Einstein

"He that is good with a hammer tends to think everything is a nail" - Abraham Maslow

"If you can't take the time to do it right the first time, how are you ever going to find the time to do it over?" -Unknown

Current Rides:
'Grumpy' - '81 Standard, now fully dressed.
'Layla' - '81 Standard w/dealer installed fairing and Hondaline bags.
'Scarlett' '76 'Survivor' nekkid as a j-bird!

Under Construction:
The 'Jalopy' '78-'79 Mash-up
'Quikie' '81 gl1100I back on the lift, project with the step-son!

In The Shed:
'81 gl1100I barn find aka "Josie, the farmer's daughter." (almost comatose build)
'77 gl1000, roller parts bike.
'82 gl1100I, 'Old Crusty' titled roller parts bike (free!)
'82 gl1100I, My first 'Wing, and an expensive lesson!
New2U Bike? Read Me.
User avatar
flyin900
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Posts: 1489
Joined: Sun Jan 10, 2010 3:50 pm
Location: Canada

Re: Caliper mount touching disc

#15

Post by flyin900 »

Track I don’t think that is correct on that outer spacer, it is designed like the #3 spacer in its look with the larger diameter bulb of the axle that enters into its front opening and seats inside there.
The washer is the question, as I don’t see it in my picture, yet if placed on the inside of the bracket it would shift the caliper bracket out enough the stop the issue.
If there are different sized flanged spacers that is possible, as I have only worked with what I have on each bike.
Current Bikes:

1966 CL77 - Honda 305cc - Dual purpose - "Gentleman's Scrambler" was a period moniker.
1967 CL175K0 - Low production number with #802 engine serial- winter 2019/2020 full restoration.
1972 CB350F - Baby Four with low mileage - Cosmetic refresh to the next level 2021/2022.
1978 CB550K - Very original bike with only 7499 Km. from new - light cleanup and refresh done.
1983 CB1100F - Canadian model - DOHC Supersport in pristine low kilometre condition from new.
1984 GL1200 - Standard model in showroom condition - two owner bike from new.
1984 CX650E - Restored summer 2017 - a rare Eurosport model - excellent one owner bike.
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