Glenn_

iTrader: (1)

Hi people ive got a saff 4x4 cossie n i changed my osf hub on my car due 2 a wheel bearing worn.Ive rebuilt it all refitted the brakes road tested my car.Now the brake pedal goes half way down before they work.the car was sat with the wheel n hub off for over 2 weeks i dont know if that has got anything 2 do with it.Any help wud b nice.

tabetha

Did you disconnect the brake pipe or leave it connected ?
Most likely just some air so need bleeding.
tabetha

Glenn_

iTrader: (1)

I left the pipe connected i was thinkin it cud b air but thought how cud it b if the caliper has just been left lying on the floor,when i was waiting for my second hand hub 2 come.Do u know much about abs tabetha?

tabetha

It stops your wheels from locking!!
Did you put new pads on at same time by any chance ?
tabetha

Glenn_

iTrader: (1)

U comic i ment do u know the technical side of it. No i havent put new pads in i just refitted the second hand complete hub refitted the brake disc n caliper made sure the driveshaft (hub nut) was tight then road tested.Now the brake pedal is soft.

tabetha

There is nothing technical about the ABS very simple system.
Sensors pick up rotational speed of all four wheels and if not all within set amount, open valves in abs valve unit to reduce pressure in that particualr circuit(wheel), (very simplified version).
They(abs) do have faults but I would suggest leaving it a while as with a worn bearing the wheel will have been trying to list/tilt, and in so doing would have imparted a side wear onto pad, which will wear off before too long, then they will sit perfectly flat against the disc again.
tabetha

Glenn_

iTrader: (1)

Thanks for the info there was no play in the wheel bearing though. It had worn on the hub.Im gonna have a look at it on friday nite.I think the osf sensor is faulty cause i checked for resistance n there was none at the sensor n i compared it with the other side (nsf) which had some resistance.Gonna swap sensor over with my old 1 n try n bleed the brakes.

Glenn_

iTrader: (1)

Fingers crossed i think ive sorted my car out the reason my brake pedal is soft is cause of the wheel bearing was worn n the pads have worn uneven.The old bearing must have a bit of play in at after all.

frog

Sounds likely, mine's been softer (the brake pedal ) than usual, and it now sounds like the left hand front bearing is shot !

I am sure I replaced it not that long ago !!!

Glenn_

iTrader: (1)

Well i did the same on my old sierra 2.0 rwd i put a new bearing in on the nsf n about a month later there was a grinding noise coming from the same side.The brake disc was catching the caliper.Jacked car up n the bearing had loads of play in it.So i went 2 A scrap yard n got a complete hub assembly. It was ok after that.