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dart330
Samba Member
Joined: July 19, 2004
Posts: 454
Location: Houston, TX
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 Posted: Fri Jan 13, 2017 3:42 pm Post subject: Brake Rear Flex Line Donut |
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My original rear flex lines did not have the rubber donut on them. The aftermarket replacements come with it. It is not shown in ETKA.
Is there a specific location on the hose you are supposed to put it? What does it do for us?
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danfromsyr
Samba Member
Joined: March 01, 2004
Posts: 15144
Location: Syracuse, NY
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| Posted: Fri Jan 13, 2017 3:51 pm Post subject: Re: Brake Rear Flex Line Donut |
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in general the donut is to keep the hose from touching/chaffing on a non-moving surface and wearing thru.
the reason that the vanagon one has one even when oem didn't is that the hose is likely listed for multiple vehicles (same length&fittings) and one of them requires the donut.
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IdahoDoug
Samba Member
Joined: June 12, 2010
Posts: 10251
Location: N. Idaho
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| Posted: Fri Jan 13, 2017 4:35 pm Post subject: Re: Brake Rear Flex Line Donut |
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Sometimes a part like that donut is also used as a simple mass damper to reduce the tendency of the hose to vibrate from either passing air or suspension movements.
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1987 2WD Wolfsburg Vanagon Weekender "Mango", two fully locked 80 Series LandCruisers. 2017 Subaru Outback boxer. 1990 Audi 90 Quattro 20V with rear locking differential, 1990 burgundy parts Vanagon. 1984 Porsche 944, 1988 Toyota Supra 5 speed targa, 2002 BMW 325iX, 1982 Toyota Sunrader |
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dhaavers
Samba Member
Joined: March 19, 2010
Posts: 7757
Location: NE MN (tinyurl.com/dhaaverslocation)
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| Posted: Fri Jan 13, 2017 5:31 pm Post subject: Re: Brake Rear Flex Line Donut |
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Plus...donuts are DELICIOUS! 
- Dave
<never mind>
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86 White Wolfsburg Westy Weekender
"The WonderVan"
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bluebus86
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Joined: September 02, 2010
Posts: 11075
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