|
|
|
#1
|
|||
|
|||
Help brake bleeding - 93 3.2 m104
I am stuck on bleeding my brakes using the 'family method'..my son presss the pedal...I started from my passanger rear and did not progress any further.
At first, the dirty greenish color fluid came out pretty good. I got about half a cup. Then I notice something is very wrong. The fluid is dripping slower and slower with each pedal depression. The brake reservoir level remained unchanged!? I started the engine a few time hoping it will change something...nothing. I think I am draining the fluid from the ABS unit. I got no brakes...sponge pedal. Is there a proper method to breed the brake system? How am I going to correct this situation. Your input will be greatly appreciated. Thanks Earl
__________________
Earl 1993 300E 3.2 2002 C240 2007 BMW Z4 Coupe 1976 BMW 2002 1992 BMW 318i |
#2
|
||||
|
||||
has your car got ASR?
__________________
1993 320TE M104 --------------------------------------------------- past: 1983 230E W123 M102 1994 E300D S124 OM606 (x2) 1967 250SE W108 M129 1972 280se 3.5 W108 M116 1980 280SE W116 M110 1980 350SE W116 M116 1992 300E W124 M103 1994 E280 W124 M104 ---------------------------------------------- "music and women I cannot but give way to, whatever my business" -Pepys |
#3
|
|||
|
|||
My car does not have ASR.
__________________
Earl 1993 300E 3.2 2002 C240 2007 BMW Z4 Coupe 1976 BMW 2002 1992 BMW 318i |
#4
|
|||
|
|||
There are two halves to your reservoir. One half feeds the front. The other feeds the rear. It often happens that the reservoir looks to be full, but one half of it emptied when you did the bleeding. You must keep the reservoir full enough so that the fluid from the one half flows over the little dam and fills up the other half of the reservoir.
Len |
#5
|
||||
|
||||
I concur with Sokoloff, you bled the rear chamber dry. You'll have to start over. I top off the resevoir after every other, or every third crack of the bleeder depending on how long I leave it open (usually till the stream begins to slow). To top off the rear res do as suggested and very slowly fill to the brim, you'll think it'll over flow but it will fill the rear res.
__________________
Mike Tangas '73 280SEL 4.5 (9/72)- RIP Only 8,173 units built from 5/71 thru 11/72 '02 CLK320 Cabriolet - wifey's mid-life crisis 2012 VW Jetta Sportwagon TDI...at least its a diesel Non illegitemae carborundum. |
#6
|
|||
|
|||
Len and Mike....It is such a simple thing that I over looked. Thanks for your tips.
Earl
__________________
Earl 1993 300E 3.2 2002 C240 2007 BMW Z4 Coupe 1976 BMW 2002 1992 BMW 318i |
#7
|
|||
|
|||
I just had the same problem with my 1990 300CE. What never got mentioned, even in the manuals, is that, for my car anyway, the reservoir for the rear brakes is at the right rear of the master reservoir and is not viewable from the fender so all you see is a full (front brakes) reservoir. I have never seen anything like this before in my 45 years of wrenching. Very frustrating for a while.
Cary Cooper |
#8
|
|||
|
|||
I think that every person who has a W126 has been down that road. When you look at the reservoir from the driver's side of the vehicle, it remains full. The front reservoir wraps around the drivers's side and obscures the rear reservoir.
To see the rear reservoir, you must lean over and view it from the passenger side of the vehicle. Additionally, the rear reservoir holds very little fluid. You can easily run it dry if you press on the pedal 15 times. |
#9
|
||||
|
||||
Quote:
That is why I always recommend topping off the reservoir after every 2-3 cracks of the bleeder screw.
__________________
Mike Tangas '73 280SEL 4.5 (9/72)- RIP Only 8,173 units built from 5/71 thru 11/72 '02 CLK320 Cabriolet - wifey's mid-life crisis 2012 VW Jetta Sportwagon TDI...at least its a diesel Non illegitemae carborundum. |
#10
|
|||
|
|||
Quote:
Additionally, due to the trapped air, it's much easier to fill it from 1/4 full to 3/4 full than from 3/4 full to the top. With two leaking rear calipers..........at different points in time...........and a third leak on the brake hose fitting............I've probably run three quarts through that reservoir............. On some days, I'd get in the vehicle...........ready to go to CT (150 mi.) and get that sickening feeling of 1/2 a brake pedal..........and I'd know that the rear reservoir was empty........yet again..........really sucks to drive that far with only one system operating. |
#11
|
|||
|
|||
What timing, I am in the process of bleeding my brakes now on my w123 240D. I have no fluid in the front reservoir but the back is full. There is only 1 cap to put fluid in and it doesn't seem to be going to the front. Do I need to practically overfill it?
|
#12
|
|||
|
|||
Glad I saw this thread. I went back out and kept pouring in fluid. It has to get to the top before it flows into the front chamber.
|
#13
|
|||
|
|||
Quote:
Which is the larger chamber..........presumably for the front brakes?? |
#14
|
|||
|
|||
Quote:
|
#15
|
|||
|
|||
Quote:
And, you cannot use the master cylinder output lines as a reference. On the W126, the front chamber of the reservoir feeds the rear chamber of the m/c and vice-versa. |
Bookmarks |
|
|