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Old 1 Day Ago   #70
tiegsd
 
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Join Date: Jul 2017
Location: West Chester, PA
Posts: 427
Default Re: '90 ZR-1 brake refurbish options

Was unable to get any fluid to go to the passenger front caliper, or to either rear caliper. Drivers front was no problem, and pedal goes smoothly to the floor. Pedal locks at half travel for other calipers, so have to assume there is blockage somewhere.

ABS unit pulled, next will test each brake line with hand pump, but as my ABS has never worked right I strongly suspect it is the culprit. As you can see it isn't in the best shape. Need to make sure the 12 pin on the car is okay, will bench test relys later when I get time.

Another tidbit I discovered is that in order to drop the bin that the ABS unit sits in out from the bottom, you have to move a bracket and the e brake cable assembly out of the way, so chose to take the abs unit out from the top. Had to pull the drivers seat for access and leverage.

Also, my flare nuts were apparently torqued by a silverback gorilla. My small pipe wrench was a life saver, easily broke them free with minimal mangling of the flarenuts (I tried regular box end as well as line wrenches, no dice).
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1990 Black/Black ZR-1 #1155
1993 White/Red coupe (Regrettably sold)


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