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Anyone ever reset the piston in the brake junction block?

posted by  someone claiming to be 2oldvolvos on  Tue May 20 05:33 CST 2003 [RELATED]


my 89 240 dl recently gave me a brake failure warning. it seems that the warning is detected by a piston in the brake junction block.

my manual glosses over the procedure to reset the piston and so i am confused.

when i removed the switch wire from the block and unscrewed the nylon plug, all i could see is a small brass thing about the size of a broken golf tee with a spring on it. i removed those 2 pieces. under that appears to be another nylon plug with a screw driver slot in it.

not only do i not see the piston to reset but i dont have a clue what to look for.

i have a feeling it will not be easy to remove the nylon plug with the screw driver slot.

any advice?

i am about to replace my master cylinder. maybe i will get lucky and the piston will move itsself back into position when i pump the pedal but i doubt it.

please help. thank you.

2oldvolvos






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