Author Topic: brakes draining  (Read 3586 times)

yves

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brakes draining
« on: April 05, 2017, 06:39:15 »
 Hello every body . I try to change the brake fluid and after having drained the fluid at the four Wheel  purging screws i have some fluid remaining in the half rear part of the tank (2).... how can i empty this half ?

Second question, i had a look Under the car and saw that i have to change the 3 cable rubber boots , which is not a problem, but i saw some grease with part of rubber ? where the cable goes Inside to the hand brake lever at the bottom of the metal tube . Must i fill that with grease and put a rubber plug there ?
 
Happy owner of a 69 blue 280SL ,  63 FHC  osb E-type , 55 FHC XK 140 to be restored...

cfm65@me.com

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Re: brakes draining
« Reply #1 on: April 05, 2017, 07:24:36 »
Yves,
If you pump the brakes, that little bit will go down to the back. Once it has gone down the the master cylinder stop pumping.
Close the wheel cylinder bleeders and fill the reservoirs.  Bleed the wheel furthest from the master, the right rear. The last dirty fluid will be the first to come out when you start bleeding the system.
I cant answer your question re the hand brake cable. I don't remember a grease nipple, but I think there is a pulley inside the housing in the photo and a little grease cant do any harm.
I am sure someone will have the answer for you.
Regards
Chris
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WRe

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Re: brakes draining
« Reply #2 on: April 05, 2017, 07:54:42 »
Hi Yves,
when you already bleed your brake system and the rear reservoir is still full I would assume that you have a problem with your (rear) brakes, the master cylinder, the brake lines/hoses, etc.
How did you get the fluid out of the (rear) brake system?
Attached a picture of the master cylinder with the fluid reservoire.
If you use the Eezibleed you should be careful with the pressure (< 1 bar) because the reservoire is not pressure-resistant because of the electrical circuit points.
...WRe

Tyler S

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Re: brakes draining
« Reply #3 on: April 05, 2017, 14:11:58 »
The rubber plug for the handbrake mount is just a rubber plug. It is the lowest part of the floor in the car so was most likely used to drain off excess dip when the car was manufactured. It opens up to the inside of the car under the handbrake lever. You can see this area inside the car if you remove the carpet/mat. You could grease the handbrake pivot area a little but do it from inside the car 
1968 (67) 250sl. 4 speed manual. DB180 Silver
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wwheeler

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Re: brakes draining
« Reply #4 on: April 05, 2017, 14:16:32 »
If that is the newer replacement reservoir, it has three cavities. The first is the front brake, the middle is for a wet clutch, and the far rear is the rear brakes. We don't use the middle clutch cavity, but it fills up automatically. You have to suck that out. I just replaced my reservoir just like yours and that is the deal.   
Wallace
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yves

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Re: brakes draining
« Reply #5 on: April 05, 2017, 20:50:30 »
Hi WRE , my tank is not exactly the same , mine has a middle separation and the rubber repartitor for bleeding beetween the front and rear compartment  is very difficult to insert in the rear compartment . I don't understand why it is built like that .


When i drain the tank some fluid is retained in the middle compartment !  I understand now WWheler that it has no importance anyway. I have bleeded the two main compartments and i will make a little hole at the bottom of the split bar so the fluid coud fill free the rear place and so i'll have two separate parts, one for front brakes and another for the rear one .
I have tested the "ezbleeder " for the first time with succes, and i have filled with silicone after 3 rince with alcool .
Happy owner of a 69 blue 280SL ,  63 FHC  osb E-type , 55 FHC XK 140 to be restored...

wwheeler

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Re: brakes draining
« Reply #6 on: April 05, 2017, 23:50:14 »
Btw, that plastic nipple sticking out off to the side is what would go to the clutch cylinder. Since these cars don't use this reservoir, it is pinched off.
Wallace
Texas
'68 280SE W111 coupe
'60 220SE W128 coupe
'70 Plymouth Roadrunner 440+6

yves

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Re: brakes draining
« Reply #7 on: April 06, 2017, 07:25:32 »
Of course ....i understand very well  now Thank's for the explanation ;)
Happy owner of a 69 blue 280SL ,  63 FHC  osb E-type , 55 FHC XK 140 to be restored...

yves

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Re: brakes draining
« Reply #8 on: April 08, 2017, 12:13:11 »
Here some photos :    ;)

Happy owner of a 69 blue 280SL ,  63 FHC  osb E-type , 55 FHC XK 140 to be restored...