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> Brake master cylinder grommets, Brake line reservoir into master cylinder
Mr.Vman
post May 2 2025, 05:49 PM
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The 1976 914 build continues, Question on the master cylinder lines from brake fluid reservoir. Do the hard lines from the reservoir just push into the rubber grommet on top of the master cylinder? I tried pushing the lines in, would not stay and leaked. Also, no click that I have read about. Are there washers that are installed before the flared end of the reservoir lines? Perhaps remove the rubber grommets from the master cylinder, install reservoir lines into grommets and then install assembly into master cylinder? What is the order the lines are pushed into the master cylinder? Where do the washers go? How deep do the hard lines fit into the grommets? Through the rubber grommet and into the master cylinder? Thanks in advance, stalled on this one. Steve
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mepstein
post May 2 2025, 05:59 PM
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The small metal spacers go into the mc, under the thick rubber grommets. The metal lines go into the grommets. It's a struggle but that's how it's done. Some people do it out of the car, on a bench but the normal way is on the car. Use some brake fluid to lube up the grommet. Swear and curse until the metal line pops in. (IMG:style_emoticons/default/beerchug.gif)
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fiacra
post May 2 2025, 08:32 PM
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QUOTE(mepstein @ May 2 2025, 04:59 PM) *

The small metal spacers go into the mc, under the thick rubber grommets. The metal lines go into the grommets. It's a struggle but that's how it's done. Some people do it out of the car, on a bench but the normal way is on the car. Use some brake fluid to lube up the grommet. Swear and curse until the metal line pops in. (IMG:style_emoticons/default/beerchug.gif)


100% agree. Not a fun job. I've done it all three ways and much easier to do if the MC is out of the car. However I wouldn't pull the MC to do it. I'd only do it that way if the MC is already out of the car. An extra grommet nearby is also not a bad idea in case one gets torn. Lubing the grommet with brake fluid is key to getting it to go in if you have already put them on the metal lines. The last time I did this I put the tubes in the grommet, lubed the grommet with brake fluid, put a flare wrench on top of the grommet and then used a large box wrench over the other end of the flare wrench to get some good leverage. That popped them right in without any cursing needed. As already pointed out there is a metal washer that sits under the grommet. Make sure it is properly seated in the recess before trying to put the grommets in. Then begins the fun of bleeding the system.
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