Trouble bleeding rear brakes 87 300TD, I love this forum!

[asnowsquall]

Frustrated to heck with bleeding my brakes on my 87 300TD. Trying to sell it and I blew a line while replacing a caliper. Replaced the lines and both rubber hoses. Having aheck of time bleeding. bubbles bubbles. Thinking I killed the master cylinder. blow of some steam and take a break. Surf this forum and found that the rear reservior is small and sure enough mine is dry. Not sure why my full reservior doesn't let fluid into the rear section of reservior but I just shook it and pushed it over slightly and that let fluid to the back. Was able to bleed the brakes in about 10 minutes. Love this place.

[P.E.Haiges]

as,

The 2 sections of the master cylimder are supposed to be separate. That way if one section goes empty from a leak, the other still has fluid to make the brakes connected to that section work.

U have to fill the 2 sections independently.

P E H

[tangofox007]

Originally Posted by P.E.Haiges

U have to fill the 2 sections independently.

How many filler ports does the reservoir have?

[asnowsquall]

One cap on my reservior. It looks like the plastic neck has little tubes that may be there to let the air out of the back chamber of the reservior. Maybe it was air locked or something. Even after I got it to fill the 1st time, then next fills were difficult also. Typically what I've found on single fill, dual reserviors like this is that they are totally seperate for the lower 1/2 but joined for the top half. Usually the front reservior is bigger than the back, but I don't think I've ever seen one this small.

[P.E.Haiges]

Tango,

Opps, I was thinking of the master cylinder in my Chevy truck which I just filled this week. U are right, the MB master cylinder has only one hole to put brake fluid in.

P E H