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Bus Front Brakes: Safety Bulletin
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guatebus
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PostPosted: Fri Jan 20, 2012 9:10 pm    Post subject: Reply with quote

cdennisg wrote:
What is the exact length of a straight piece of hard line before bending for this area?


370mm
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cdennisg
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PostPosted: Fri Jan 20, 2012 9:37 pm    Post subject: Reply with quote

guatebus wrote:
cdennisg wrote:
What is the exact length of a straight piece of hard line before bending for this area?


370mm


Thank you.
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LHG
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PostPosted: Sat Jan 21, 2012 3:32 pm    Post subject: Reply with quote

Here is the disturbing thing. This is the line that almost failed. It appears to have a "factory" bend and it's the original style zinc plated line.
Compare it to the ones Hazetguy posted.

Image may have been reduced in size. Click image to view fullscreen.


hazetguy wrote:
here is one i did, next to a factory original line:
Image may have been reduced in size. Click image to view fullscreen.


.

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chrisflstf
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PostPosted: Sat Jan 21, 2012 3:53 pm    Post subject: Reply with quote

I think the inside hub area of some drums, varies in diameter. Its not a machined surface. There isnt alot of room for error either
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Snoop Bob
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PostPosted: Sat Jan 21, 2012 9:57 pm    Post subject: Reply with quote

LHG wrote:
Here is the disturbing thing. This is the line that almost failed. It appears to have a "factory" bend and it's the original style zinc plated line.
Compare it to the ones Hazetguy posted.

Image may have been reduced in size. Click image to view fullscreen.


hazetguy wrote:
here is one i did, next to a factory original line:
Image may have been reduced in size. Click image to view fullscreen.


.


Although similar, when looked at in the context of being inside a brake drum assembly with associated hardware, that appearance becomes drastically different.
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I would be interested in knowing the sizes of the various shafts.
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Culito
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PostPosted: Mon Dec 30, 2013 5:20 pm    Post subject: Reply with quote

LHG wrote:
Here is the disturbing thing. This is the line that almost failed. It appears to have a "factory" bend and it's the original style zinc plated line.
Compare it to the ones Hazetguy posted.

Image may have been reduced in size. Click image to view fullscreen.


hazetguy wrote:
here is one i did, next to a factory original line:
Image may have been reduced in size. Click image to view fullscreen.


.

Two different types of wheel cylinders...
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64 ragtop volks
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PostPosted: Mon Dec 30, 2013 5:32 pm    Post subject: Reply with quote

The earlier pics are early wheel cylinders 63 down I believe and the last pic of blue bus is 64 and up?
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type47fan1
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PostPosted: Mon Dec 30, 2013 7:45 pm    Post subject: Reply with quote

This is a very good heads up. I had a line get nicked the same way but was really due to the hub lock tab breaking and allowing the hub to get loose. Now that spare line is in the box and this is a checklist item on trips.
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otis_bartleh
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PostPosted: Tue Dec 31, 2013 8:23 am    Post subject: Reply with quote

Definitely a good warning. When replacing the braking system on my bus, the old line on the drivers side was a replacement and poorly bent, and was ready to fail also. I just bent mine by hand as well.
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Who.Me?
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PostPosted: Fri Jan 02, 2015 1:50 pm    Post subject: Reply with quote

cdennisg wrote:
guatebus wrote:
cdennisg wrote:
What is the exact length of a straight piece of hard line before bending for this area?


370mm


Thank you.


Hi

Are the bridging line lengths inside the front drums the same for all years' brakes?

I've ordered a kit of Cunifer lines this afternoon from CSP in Germany for a '67 bus with dual circuit brakes. I checked with them before ordering, and they said that their kit includes two 240mm lines for this purpose.

My truck is a '56 but I'm converting to dual circuit brakes at the same time, hence why I've ordered a set of '67 lines.

Which is the correct length? 240mm or 370mm?

Thanks

Andy
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Hokie87
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PostPosted: Mon Feb 02, 2015 5:15 am    Post subject: Reply with quote

I took off my front tires this weekend to lube the front end and noticed brake fluid on the inside of the right front tire. Everything looked fine, then I remembered this thread. I found the exact same problem.

Image may have been reduced in size. Click image to view fullscreen.


The PO ran the line incorrectly. It runs inside the spring and is not held by the clip (arrow).

Image may have been reduced in size. Click image to view fullscreen.
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