#1: how does rear drum abs work? Author: heppy1, Location: scotlandPosted: Wed Feb 08, 2012 3:16 pm ---- My car has failed its mot as the abs light is on.Mechanic advised me there is no sign of abs on the rear but i should have.The main wiring is there but nothing going to either drums.... is it simple as buying new sensors and hubs or what.... hope you can help
#2: Re: how does rear drum abs work? Author: Seabook, Posted: Wed Feb 08, 2012 3:32 pm ---- well you will need the ABS senors anyway...should be either
4545 77 or 4545 79
but other thing is you will have to make sure you got the correct rear drums... as non-abs and abs use different rear drum...and i don' t think they are interchangable
#3: Re: how does rear drum abs work? Author: heppy1, Location: scotlandPosted: Wed Feb 08, 2012 5:02 pm ---- where do the senosors fit into...the backing plate?
#4: Re: how does rear drum abs work? Author: Seabook, Posted: Wed Feb 08, 2012 5:10 pm ----
heppy1 wrote:
where do the senosors fit into...the backing plate?
that's the bit i am not sure
for the disc axle it fit onto the caliper mounting plate on the trailing arm, but since the drum axle doesn't have those bits i would have though it fit into the backing plate, should be able to see the slot after you take the drum off. (possible can see it from the back too)
and i think the non-abs run smaller backing plate/ drum (180mm); while abs must run 203mm drum......
#5: Re: how does rear drum abs work? Author: MrBSI, Location: What's it to you? ? ?Posted: Thu Feb 09, 2012 10:14 am ---- Whats the betting the rear beams been replaced with a non abs one
#6: Re: how does rear drum abs work? Author: heppy1, Location: scotlandPosted: Thu Feb 09, 2012 12:56 pm ---- I took car home and took wheels and drums off... the drums have abs rings but there is no sign on backing plate where a sensor would go.Could it possibly be that there was never abs at the rear or would the front not work without rear? I am confused!!! What is a rear beam lol
#7: Re: how does rear drum abs work? Author: MrBSI, Location: What's it to you? ? ?Posted: Thu Feb 09, 2012 1:01 pm ----
heppy1 wrote:
My car has failed its mot as the abs light is on.
How long has the ABS warning light been on for?
#8: Re: how does rear drum abs work? Author: heppy1, Location: scotlandPosted: Thu Feb 09, 2012 1:04 pm ---- i bought the car about 6 months ago from a women but it had sat in my garden for a while and i finally put it in for a mot other day and failed because abs light wouldnt eliminate.Garage said bulb was out of it so they fittted new one and its on constant.He rekoned sumone must of changed axle and done away with abs...
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