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Post by clay on Jan 19, 2023 14:42:07 GMT -8
Friend in Victoria is pulling his hair out trying to get brake pressure, and I'm out of ideas for him.
Early to mid '70s Beetle. Replaced the Master Cylinder (I think he's tried 3 now) and all wheel cylinders.
New lines as far as I know He's tried adjusting the rod from the pedal to the master cylinder
There are no fluid leaks that he's been able to see. He ran a new front to back brake line outside the tunnel so he's able to see the whole thing.
He's got a pressure bleeder, and the system's fluid is clean and clear. When the bleeder is on, he gets good pedal (which makes sense to me), but once removed there's no pedal.
Any ideas/suggestions? He's got plenty of wrenching experience on Bugs but he's at his wit's end.
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No Brakes!
Jan 19, 2023 15:18:56 GMT -8
via mobile
Post by mitchy965 on Jan 19, 2023 15:18:56 GMT -8
Try clamping the lines to isolate the problem, if you clamping all 3 and no pedal than it's likely the master. Buddy on the Victoria forum had the same problem and by clamping he found 2 crappie wheel cylinders.
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Post by Volktales on Jan 19, 2023 18:54:32 GMT -8
Sooo many crappy replacement parts out there now. Are the drums worn out with new shoes? Cheapo shoes can flex causing low pedal. Adjustment waaay off?
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Post by 1hotvw on Jan 19, 2023 21:07:40 GMT -8
i know of a few people who had the same issue but they forgot to adjust the new shoes. it can happen
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Post by clay on Jan 19, 2023 22:28:30 GMT -8
I'm pretty sure he said he'd adjusted all the shoes properly. He's been maintaining and daily driving Beetles for years and I assume he's got above average technical knowledge of them, but never hurts to revisit the basics.
I passed mitchy's suggestion on to him earlier, we'll see if he has any luck down that avenue.
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Post by owdlvr on Jan 20, 2023 10:14:07 GMT -8
Last time I did all four drums with a new master, I had to lock all four wheels with the adjuster stars, bleed the brakes, and then readjust the brakes.
Otherwise, all I got was loooooooooong pedal.
-Dave
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No Brakes!
Jan 20, 2023 15:30:03 GMT -8
via mobile
Post by mitchy965 on Jan 20, 2023 15:30:03 GMT -8
Every good brake shop used to have a shoe arc machine in the corner
nowadays one size fits all.
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Post by Volktales on Jan 22, 2023 9:24:37 GMT -8
The good thing about the four lug drums is you CAN lock the drum with the adjusters completely as Dave mentioned above. I have had to do this before too. Harder to do with the wide fives due to having only one hole in the drum for access. I am having a similar issue with the Ghia and the disc brake conversion on the front. No air comes out and the pedal pressure feels normal, but the pedal is just lower than I would like it to be. This is with the recommended dual master cylinder, and the rod is adjusted correctly. Still irritated about the window glass issue, so have not investigated any of this further...
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Post by bobloblaw on Feb 14, 2023 12:39:13 GMT -8
Did buddy Keith ever get his shit sorted?
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Post by clay on Feb 14, 2023 18:44:22 GMT -8
Did buddy Keith ever get his shit sorted? No idea, I need to give him a call to see how he's making out with it. |
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