s320 1994 rear brakes

[delrobbo]

Hi Im A New Member Hope You Can Help.failed Mot Next To No Rear Brakes.ive Replaced Rear Pads And Discs[front Pads Replaced Last Year,bled Rear [bought A Preasure Kit]took It Out For Spin Abs Light On Brake Warning Light On Light Preasure Car Stops Peddle Travels Long Way Touched Rear Discs Stone Cold[snowing Hear But They Should Be Warm,so Still No Rear Brakes All In Vain.is There A Brake Compensator That Could Be Seized??bleed Front Brakes??hope Some One Can Put Me On The Right Track Thanks

 

[wireman]

Long pedal travel suggests master cylinder troubles. Each end of the car has a seperate hydraulic circuit.
The fault could also be in the ABS pump.

You must bleed the rear before the front i.e. furthest away/logest pipe first Rh r, Lhr, Rhf, Lhf

Some punctuation and a few less capitals in your fault list might clarify your question.

 

[delrobbo]

thanks for info.
bled brakes again today and abs unit.
i can hear air sound when i press brake peddle down.
just want to make sure it is brake master cyl.
quoted £106 plus dreaded vat. THANKS AGAIN FOR REPLY

 

[television]

As wireman I think that you will have to replace it, that is the reason for long travel on the pedal

 

[delrobbo]

master cyl

thanks for reply.
hope to pick up one in morning.

 

[wireman]

The air sound is probably the servo admitting air into its chamber through the control valve in the operating rod (servo end) atop the brake pedal. Its nothing to worry about, its only usually audible when the engine is stopped and its quiet. It will only happen a couple of pedal operations since the servo will run out of vacuum.

Bleed it with the engine running to get the servo booster in action or else the new master cylinder may get a teeny weeny bit of air trapped between its two working pistons, this leaves a very slightly soggy feel to the pedal.

If you take the pistons out of the old cylinder you may see that one or both of their rubber seals is all gooey and swollen, if so its probably because the brake fluid has not been changed regularly (at the one year MB service interval).

This may have affected all the seals in the system, again don't worry unduly since the seals in the rest of the system do not have to slide through any distance like the master cylinder and they will most likely not be affected badly.

When the bleeding stage of your repair comes around press back the brake calliper pistons of each wheel to empty them of old fluid and then bleed it, if the fluid is dark and grotty looking repeat the pushing back bit once or twice to get the last of the old fluid out of the system, with luck and given that its only 6 years old you will have no trouble with the other components seals, most brake manufacturers give hydraulic parts a ten year life after which they should be changed.

Old fluid can also accelerate the natural decay of the flexible hoses at each calliper so bear in mind that these may be best replaced if the fluid is or has been in poor condition, they are fairly inexpensive and may make the car safer.

 

[delrobbo]

thanks for latest info hope to get it sorted over next few days.
will post result.great forum well done.

 

[delrobbo]

abs light

replaced brake master cyl rebled system i now have rear brakes.
abs light on all the time.?????

 

[television]

This should be a faulty lead from one of the wheel sensors, the 140 does not have a OVP relay

Make sure that the speed sensors ar pushed right home and that the ends are clean

http://www.detali.ru/cat/oem_mb2.as...GM=717.454&CT=F&cat=19B&SID=54&SGR=676&SGN=18

 

[delrobbo]

abs light

thanks malcolm i will check it out in morning.

 

[delrobbo]

mot pass

passed mot but only just..handbrake needs adjustment.
another problem is i have a battery drain ive removed software for satnav still the same.
all internal lights go out as they should ??? new batt... alternator been checked all ok

 

[delrobbo]

battery drain

cant get to the bottom of this battery drain...battery cost £78 ten months ago i start the car up and let it run for twenty mins twice a week its only done 500 miles in 2008..charging ie alt been checked out thats fine ive checked glove box light goes out removed bulbs from boot..removed software from fitted sat nav still no joy...i may take the battery back and get a replacment.. ANY HELP WOULD BE GREAT
THANKS

 

[television]

What make is the battery that you purchased

 

[delrobbo]

its on charge at present ..will take it out and post reply in morning..

 

[davidsl500]

Its worth doing a search on the forum for "battery drain" or "current drain" as it seems to be a recurring problem with mercs. In fact my SL has started to play up - after 3-4 days of non use it will need a charge when its cold. Its too cold to look at it at the moment !

 

[delrobbo]

morning all and happy new year...make of battery is DUCELLIER EXPERT 88AH DO17 CCA 720....i will wait for reply before i get on the phone and get a replacement if needbe..
thanks

 

[television]

morning all and happy new year...make of battery is DUCELLIER EXPERT 88AH DO17 CCA 720....i will wait for reply before i get on the phone and get a replacement if needbe..
thanks

Never heard of it, and an in house brand, and I guarantee that it is dud.

Exide,Bosch,Banner,Lucas all good

 

[television]

Its worth doing a search on the forum for "battery drain" or "current drain" as it seems to be a recurring problem with mercs. In fact my SL has started to play up - after 3-4 days of non use it will need a charge when its cold. Its too cold to look at it at the moment !

David, your car does not have anything that will drain the battery, not one fault ever known on your car for this

 

[delboy777]

I have just replaced my battery with a Bosch, cost £108 but well worth it in the end and a three year warranty to boot

 

[davidsl500]

Never heard of it, and an in house brand, and I guarantee that it is dud.

Exide,Bosch,Banner,Lucas all good

Ducellier are a big French Company Malcolm - manufactured alot of ignition based products for the OEM market - Distributors.regulators etc. OE on alot of French cars. Developed Batteries with Lucas along while ago back in the Chloride Batteries days........Also had tie ups with Valeo on certain products.... No idea what their batteries are like though...!