Bricol Posted July 7, 2007 Share Posted July 7, 2007 Anyone know anything about Toyota Lucida/Previa thingie brakes? My mates has an interesting problem with the brakes in that the front ones seem to seize - the front gets way too hot to touch and the back ones stay cold. Simple, you say, seized calipers or slides. But both sides? At the same time, regardless of when they were freed off last? Bad enough that if you stop, getting going again involves rear wheel spin as you overcome the front brakes. Anyone know how they are plumbed? Or suggestions as to possible causes? I've yet to cast my eye over the thing, so it may be blindingly obvious but . . Bri Link to comment Share on other sites More sharing options...
Mr Locust Posted July 8, 2007 Share Posted July 8, 2007 Anything stopping the pedal or linkage returning fully? Broken return spring inside m/cyl? Both brakes sounds like trapped pressure. Ian Green and Silver Roadsport 😬 Link to comment Share on other sites More sharing options...
Bricol Posted July 8, 2007 Author Share Posted July 8, 2007 Ah - but you would think a trapped link or non-returning master cylinder would also operate the rears too . .. but they are stone cold when the front are smoking . . . Certainly sounds like trapped pressure to me - but where? Bri Link to comment Share on other sites More sharing options...
Mr Locust Posted July 8, 2007 Share Posted July 8, 2007 Don't know Egon just offering suggestions. Maybe tandem m/cyl with front-rear split? Maybe some sort pressure balance/cutoff device sticking. Have the rears been messed with recently? Ian Green and Silver Roadsport 😬 Link to comment Share on other sites More sharing options...
7 wonders of the world Posted July 9, 2007 Share Posted July 9, 2007 load sensing valve?, it not un common that these are not set correctly on the production line, I've seen them set badly both ways and in my expirience most dealers have little knowledge of the effect of these being incorrectly set, getting the intial set details from the manufacturer can be fun too Too young to be old ! Link to comment Share on other sites More sharing options...
millsn Posted July 9, 2007 Share Posted July 9, 2007 I thought brakes were set up diagonally across the car for safety in a failure. If that's the case the problem must be elsewhere? I don't suppose they use mechanical ABS do they? There might be some way it can jam or if electronic perhaps it can be wrongly triggered. The mechanical ABS usually only work on the front wheels. Apologies if this should prove the proverbial herring Link to comment Share on other sites More sharing options...
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