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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Brake line spiral

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Old Apr 19, 2020 | 08:57 PM
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mzwizanski's Avatar
mzwizanski
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Brake line spiral

What is the reason or purpose of the brake line spiral or "curly cue" from the master cylinder to the RABS valve? When replacing line should this be recreated or use same length of line?



 
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Old Apr 19, 2020 | 09:18 PM
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Branden Heine
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Originally Posted by mzwizanski
What is the reason or purpose of the brake line spiral or "curly cue" from the master cylinder to the RABS valve? When replacing line should this be recreated or use same length of line?

Cars and trucks bend and flex as you drive. Many trucks have a frame that supports the body. The body is attached to the frame by rubber mounts, so there can be a lot of motion between the body and the frame. The master cylinder is attached to the body while some of the other brake components are attached to the frame. Also, when you step on the brake pedal, you flex the firewall of your car, moving the master cylinder but not the other components in the brakes. Because if you had one straight line it would break because of tension so the Curley part allows travel yes when you do the breaks add that part back in hope this helped
 
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Old Apr 19, 2020 | 09:45 PM
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vibration/ flex.. Most any older vehicle should have this if it's not there

I have a 1993 Suzuki Jimny which is a Japanese Domestic version of the Samurai, and on that vehicle, the brake lines come off the master and then into distribution blocks which connect to brake hoses, then to the chassis. I think the USDM Samurai just uses a coil.. I'm planning on omitting the brake hose which I may not be able to get/ is likely 20+ years old and fitting coils instead.. Lucky it's from Japan so pretty much rust free
 
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