| [ Total Views: 785 | Total Replies: 9 | Thread Id: 106914 ] |
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 Gamaufmate
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| posted on August 18th, 2014 at 07:17 PM |
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Pulsating brake pedal
Hey guys, i have a 1961 bug and i am experiencing a pulsating brake pedal when i am braking. I recently put new disc brakes on the front, and they
work great. I checked to see if they have warped, but they are 100% perfect. The car still has drums on the rear, and i believe they are the cause.
When i lightly pull up the hand brake whilst in motion the handbrake pulsates, and the car comes to a stop in a jerky motion(like as if the brake goes
on and off on and off etc). I thought ok, my drums are warped. I got them machined at a brake shop, put them back on my car and it still pulsates a
little bit, but not as much. What could be the problem? should i just convert to discs in the rear to completely eliminate this issue? my car is also
lowered with abit of neg camber on wider wheels as well. Has this got anything to do with it?
Cheers guys 
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1303Steve
A.k.a.: Steve Carter
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| posted on August 18th, 2014 at 07:35 PM |
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Hi
Wide 5 wheels can distort the brake drum very easily, try removing the wheels and re tightening the wheels nut with a tension wrench, but only tighten
every 2nd one.
The wheels can be bent which will also distort the drum.
Steve
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 matberry
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| posted on August 18th, 2014 at 07:56 PM |
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Steve is onto it exactly, only thing to add is that the machining is hard to do acurately without a jig/axle to hold the drum as it sits on the car
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LUFTMEISTER
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| posted on August 18th, 2014 at 10:13 PM |
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That would be your ABS brake feedback. You can turn it off. If you look past your paddle shifter, its the button between the rear parking sensor &
camera controller & the climate control a/cond dial. Hope this helps. 
Customer service is not dead in Australia.
Always after HAZET & MATRA & VW factory tools
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 vw54
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| posted on August 19th, 2014 at 08:20 AM |
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as per above DONT do the wheel bolts up with a rattle gun
from memeory i think they are 22 ft lbs
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Gamaufmate
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| posted on August 19th, 2014 at 09:19 AM |
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Would it be too late now? As i did them up pretty tight. Would the drums be out of round again? I will back them off and see what it does. Cheers!
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empi
A.k.a.: Empstar
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| posted on August 19th, 2014 at 10:50 AM |
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Rear wheel bearing cactus??!
"If at first you don't succeed, skydiving is not for you." - Anonymous  |
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HappyDaze
A.k.a.: Greg Mackie
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| posted on August 19th, 2014 at 11:33 AM |
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A couple of things to remember :-
NEVER leave the handbrake on hard over-night, when the brakes are hot. 
ALWAYS torque the wheel nuts/studs to 72 ft/lbs...no more. 
Are the "wider wheels" steel rims, welded to original centres? If so, this could be the cause of the drum distortion. If the centres aren't
perfectly flat and true, the wheels can pull the drums out of shape.
I'd rather wear a Beetle out by racing it than by polishing it!
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Gamaufmate
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| posted on August 19th, 2014 at 04:05 PM |
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hmm, when ever i come home i always pull the handbrake on. I am not too sure about the wheels, i bought them off some bloke. Will converting to disc
brakes eliminate this issue completely?
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empi
A.k.a.: Empstar
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| posted on August 21st, 2014 at 11:14 AM |
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Let us know the problem once diagnosed?
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