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brake bleeding problem
My car is a 88 190 2.3-16, i have recently fitted new rear offside brake pipes (flexi and copper) along with a new caliper, ive now come to bleed the brake but seem to be getting no-where, here are my observations:
The fluid in the master cylinder doesnt seem to be going down after maybe 20 mins of bleeding, When the bleed valve is opened, a small amount of air will come out it, Is there a special proceedure on this car? or somthing im missing as i spent over an hour last night on the back to no avail, any help greatfully recieved
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190 2.3-16 |
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Are you using suction, pressure, or someone holding the pedal down while you open the valve? Check here for bleeding techniques.
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Quote:
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95 E320 Cabriolet, 159K |
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Q: The technique im using is some1 holding the pedal down while i open the valve, (never really had any problems using this way before on other cars,
Kestas: Yeah its proper brake pipes that were made up by a local car parts shop.
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190 2.3-16 |
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Quote:
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'94 W124.036 249/040 leder; 8.25x17 EvoIIs '93 W124.036 199/040 leder; 8.25x17 EvoIIs, up in flames...LITERALLY! '93 W124.036 481/040 leder; euro delivery; 8.25x17 EvoIIs '88 R107.048 441/409 leder; Euro lights '87 W201.034 199/040 leder; Euro lights; EvoII brakes; 8x16 EvoIs - soon: 500E rear brakes '70 R113.044 050/526; factory alloys; Euro lights |
#6
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yhliem: Yeah, the pedal is pumped between 5-10 times before each bleed,
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190 2.3-16 |
#7
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You've probably bled the rear part of the resevoir dry and the fluid level in the front chamber is not going down. You may have your car on a slight incline with the nose down. Fill the resevoir full full full and check it often. It does not take much fluid to bleed lines.
glenmore 1991 300CE |
#8
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glenmore: hi, i think you may be right with this one, cos i wasnt sure if the resevoir had different chambers, but the car is inclined at the rear, ill go home and try it again, cheers
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190 2.3-16 |
#9
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Been there. Has to be very full to spill over into the rear chamber, even without incline. Helps to clean the outside of the reservoir so that you can see the level of the rear chamber.
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1986 300E 5-Speed 240k mi. |
#10
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Thank God for this board! I replaced my rear calipers, and could not get them bled right to save my life. That is, until I searched this board, and found out that I needed to fill the reservoir up to the very BRIM, so that it would trickle back into the back of the reservoir.
Boy, I felt like an idiot... 20+ years of working on American cars did NOT prepare me for some of the little things I run into on my 190e! |
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Rear Brake Bleeding Problems
Yes very important to fill to the brim so fluid covers this small air vent in order to fill the rear chamber. It is not easy to visually see whether the rear chamber is full or not. Before doing this I actually had the master cylinder totally reconditioned and then still could not get the rear to bleed.
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Imagine- This post was 3 years old, and it is still around to help someone. What an amazing resource.
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1986 300E 5-Speed 240k mi. |
#13
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Been there, done that...
I know the pain of the 16v fluid resevoir all to well. It looks full, it seems full, you might even be adding fluid to it, BUT, unless the sucker it to the top and more to spill over into the back compartment, you aint bleeding nuthin' but air baby! My dad and I bled the lines dry trying to bleed the system of air before I got in there with a good light and a magnifying glass and realized the front compartment was full and the secret rear compartment was bone dry. Sneaky Germans! I am sure it serves some other purpose other than confusing DIY guys like us, but, I will not soon forget that mistake and aggrivation of knowing how to bleed brakes and still not getting anywhere. After the rear was full and kept full all four lines bleed in no time easy peasy.
Silly Rabbit.
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Christopher Henkel 1990 190E 2.6 - Arctic white SOLD 1986 190E-16v - Blauswartze 1993 300CE - SOLD 2003 W208 CLK 320 Cabriolet - Magma Red |
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