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1993 240 brake problem 200

uid 18083's pic
posted by  lucid on  Wed Apr 6 05:53 CST 2005
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last visit: Fri Oct 24 12:31 CST 2014
[RELATED]

but remember to clamp the lines going from the caliper to the ABS unit so dirty fluid doesn't get into it.

I'm sorry to differ on this "clamping" brake lines to protect the ABS unit, for 4 reasons:

1) It's not mentioned in the 200 or 700/900 Volvo factory brake manuals.

2) What the manuals do say is to open bleeders at each caliper and depress the pistons to expell the fluid behind them.

3) With fluid forced out the open bleed line, I doubt any fluid will go upstream against the fluid in closed line, even from the closest caliper. Where would it go? It's a closed system.

4) Brake hoses may be different now, but the last one I dissected had a pretty hard, plastic-type inner line, which I expect could crack if pinched off.

IMO, this clamping of ABS brake lines is a myth here on the BrickBoard, maybe originating as a FAQ tip. If you or anyone knows of a credible Volvo source for this practice, I'll eat my words (but I still won't clamp any brake lines).
--
Bruce Young
'93 940-NA (current) — 240s (one V8) — 140s — 122s — since '63.






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