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Author Topic: what does the arrow on the rear brake drum mean?  (Read 5711 times)

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Offline xsmooth69x

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what does the arrow on the rear brake drum mean?
« on: August 01, 2012, 04:37:53 PM »
exactly what the title says for a cb550

in the manual for adjusting the brake they dont mention anything about the arrow on the rear brake drum
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1975 CB550 (FINISHED?!?!?)
first motorcycle ever!!! ow and i dont know how to ride it either :D

raw rust rice venti quad shot cafe racing latte project aka my build..... http://forums.sohc4.net/index.php?topic=88853.0

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Offline lucky

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Re: what does the arrow on the rear brake drum mean?
« Reply #1 on: August 01, 2012, 04:47:02 PM »
Quote from: xsmooth69x on August 01, 2012, 04:37:53 PM
exactly what the title says for a cb550

in the manual for adjusting the brake they dont mention anything about the arrow on the rear brake drum

The arrow is to line up the brake lever on the shaft.
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Offline xsmooth69x

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Re: what does the arrow on the rear brake drum mean?
« Reply #2 on: August 01, 2012, 05:19:03 PM »
well there is a little line thing on the brake drum itself.... then some weird washer that has the arrow.

the brake lever thing actually has a notch and there is a notch on the stem thing so you cant put it on any other way
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1975 CB550 (FINISHED?!?!?)
first motorcycle ever!!! ow and i dont know how to ride it either :D

raw rust rice venti quad shot cafe racing latte project aka my build..... http://forums.sohc4.net/index.php?topic=88853.0

black and white equation godzilla chalkboard 
1972 cb750 - next in line for some <3

Offline CycleRanger

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Re: what does the arrow on the rear brake drum mean?
« Reply #3 on: August 01, 2012, 05:24:05 PM »
The arrow was added to be an indicator of brake lining wear.
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Offline Fritz

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Re: what does the arrow on the rear brake drum mean?
« Reply #4 on: August 01, 2012, 05:28:16 PM »
Honda Workshop Manual CB500 550, page 112:

"4. BRAKE LINING WEAR INDICATOR  Discription
The brake lining wear indicator is provided to check the wear condition of the brake linings visually from outside. As shown in the figure below, the indicator plate is attached to the brake cam. As the brake lining has worn, the brake cam moves excessively. Such a movement of the cam is checked by the arrow on the periphery of the indicator. Further the brake panel cam boss is provided with the "wear limit" mark to make it possible to check the service limit (replacement time) of the lining easily with the brake panel installed."
« Last Edit: August 01, 2012, 05:30:45 PM by Fritz »
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Offline Bodi

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Re: what does the arrow on the rear brake drum mean?
« Reply #5 on: August 01, 2012, 06:04:30 PM »
It shows the brake shoe wear, and indicates the brake cam is getting close to a dangerous angle of rotation. The mechanism can lock under hard braking - the cam rotates too far basically, and then it can jam up with the brake strongly engaged. That's what I call an uncontrollable rear wheel skid crash. So even if you look and your brake shoes have lots of material left, you should replace them or look for some other problem once the arrows line up when the brake is applied.
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Offline xsmooth69x

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Re: what does the arrow on the rear brake drum mean?
« Reply #6 on: August 01, 2012, 06:49:32 PM »
awesomeness thanks everyone!!
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1975 CB550 (FINISHED?!?!?)
first motorcycle ever!!! ow and i dont know how to ride it either :D

raw rust rice venti quad shot cafe racing latte project aka my build..... http://forums.sohc4.net/index.php?topic=88853.0

black and white equation godzilla chalkboard 
1972 cb750 - next in line for some <3

orange550

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Re: what does the arrow on the rear brake drum mean?
« Reply #7 on: August 01, 2012, 07:03:30 PM »
My arrow is getting close to showing a need to replace brake shoes. This past Monday, I jammed the brakes to stop for an ambulance that was running the red light. I managed to not get run over by the ambulance, but got a little 'funky'.

I'm gonna rebuild the swingarm bushing over the next week, so I best be getting new shoes on while I'm at it.
« Last Edit: August 27, 2012, 06:11:34 AM by orange550 »
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Offline xsmooth69x

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Re: what does the arrow on the rear brake drum mean?
« Reply #8 on: August 01, 2012, 07:41:05 PM »
Quote from: orange550 on August 01, 2012, 07:03:30 PM
My arrow is getting close to showing a need to replace brake shoes. This past Monday, I jammed the brakes to stop for an ambulance that was running the red light. The rear end locked up. Was a bit disconcerting to say the least. I managed to not get run over by the ambulance, but got a little 'funky'.

I'm gonna rebuild the swingarm bushing over the next week, so I best be getting new shoes on while I'm at it.

+1
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1975 CB550 (FINISHED?!?!?)
first motorcycle ever!!! ow and i dont know how to ride it either :D

raw rust rice venti quad shot cafe racing latte project aka my build..... http://forums.sohc4.net/index.php?topic=88853.0

black and white equation godzilla chalkboard 
1972 cb750 - next in line for some <3

Online dave500

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Re: what does the arrow on the rear brake drum mean?
« Reply #9 on: August 01, 2012, 11:27:02 PM »
what arrow?i didnt even see the indian!
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Offline HondanutRider

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Re: what does the arrow on the rear brake drum mean?
« Reply #10 on: August 02, 2012, 05:08:06 AM »
Quote from: dave500 on August 01, 2012, 11:27:02 PM
what arrow?i didnt even see the indian!
Look carefully mate...or your boomerang won't come back. ;D :P ;D
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Offline trueblue

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Re: what does the arrow on the rear brake drum mean?
« Reply #11 on: August 02, 2012, 05:14:49 AM »
Quote from: HondanutRider on August 02, 2012, 05:08:06 AM
Quote from: dave500 on August 01, 2012, 11:27:02 PM
what arrow?i didnt even see the indian!
Look carefully mate...or your boomerang won't come back. ;D :P ;D
If it doesn't come back it is only a stick. ;D
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Offline Teatimetim

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Re: what does the arrow on the rear brake drum mean?
« Reply #12 on: August 02, 2012, 07:16:06 AM »
Learn something new on here every day.
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Offline 72 yellow

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Re: what does the arrow on the rear brake drum mean?
« Reply #13 on: August 02, 2012, 09:06:28 AM »
Quote from: Teatimetim on August 02, 2012, 07:16:06 AM
Learn something new on here every day.
I learned not to be drinking anything when reading Dave500's posts. 
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Offline LoVel

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Re: what does the arrow on the rear brake drum mean?
« Reply #14 on: August 02, 2012, 09:43:48 AM »
Quote from: 72 yellow on August 02, 2012, 09:06:28 AM
Quote from: Teatimetim on August 02, 2012, 07:16:06 AM
Learn something new on here every day.
I learned not to be drinking anything when reading Dave500's posts.

Dave is alright with me.  He rides a really cool bike.
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Offline xsmooth69x

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Re: what does the arrow on the rear brake drum mean?
« Reply #15 on: August 02, 2012, 10:57:20 AM »

"Dave is alright with me.  He rides a really cool bike."

+1
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1975 CB550 (FINISHED?!?!?)
first motorcycle ever!!! ow and i dont know how to ride it either :D

raw rust rice venti quad shot cafe racing latte project aka my build..... http://forums.sohc4.net/index.php?topic=88853.0

black and white equation godzilla chalkboard 
1972 cb750 - next in line for some <3

Offline 72 yellow

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Re: what does the arrow on the rear brake drum mean?
« Reply #16 on: August 02, 2012, 01:03:46 PM »
Quote from: xsmooth69x on August 02, 2012, 10:57:20 AM

"Dave is alright with me.  He rides a really cool bike."

+1
I meant spraying the keyboard and the screen with what I am drinking while reading his posts. ;D  ;D
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Online dave500

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Re: what does the arrow on the rear brake drum mean?
« Reply #17 on: August 02, 2012, 01:05:49 PM »
my boomerangs always come back hondanut,i always throw them in a stamped self addressed envelope!
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Offline LesterPiglet

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Re: what does the arrow on the rear brake drum mean?
« Reply #18 on: August 02, 2012, 04:20:56 PM »
Quote from: orange550 on August 01, 2012, 07:03:30 PM
My arrow is getting close to showing a need to replace brake shoes. This past Monday, I jammed the brakes to stop for an ambulance that was running the red light. The rear end locked up. Was a bit disconcerting to say the least. I managed to not get run over by the ambulance, but got a little 'funky'.

I'm gonna rebuild the swingarm bushing over the next week, so I best be getting new shoes on while I'm at it.
Rear brake working perfectly then. :)
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Offline xsmooth69x

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Re: what does the arrow on the rear brake drum mean?
« Reply #19 on: August 02, 2012, 05:40:27 PM »
Quote from: LesterPiglet on August 02, 2012, 04:20:56 PM
Quote from: orange550 on August 01, 2012, 07:03:30 PM
My arrow is getting close to showing a need to replace brake shoes. This past Monday, I jammed the brakes to stop for an ambulance that was running the red light. The rear end locked up. Was a bit disconcerting to say the least. I managed to not get run over by the ambulance, but got a little 'funky'.

I'm gonna rebuild the swingarm bushing over the next week, so I best be getting new shoes on while I'm at it.
Rear brake working perfectly then. :)

very nice  8)
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1975 CB550 (FINISHED?!?!?)
first motorcycle ever!!! ow and i dont know how to ride it either :D

raw rust rice venti quad shot cafe racing latte project aka my build..... http://forums.sohc4.net/index.php?topic=88853.0

black and white equation godzilla chalkboard 
1972 cb750 - next in line for some <3
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