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Master cylinder is worn out?
Thanks for the post. After installing new clutch plates on my 03 EV with the linked system I’ve had the same experience, I can get it to be solid for a day or 2 but than goes spongy again.I tried speed bleeders, back filled it and done every thing but the fix where you take the calipers off and hang them above the reservoir, it will be the last resort. I have seen posts about hanging a heavy weight on the brake pedal over night, but this was a fix posted by a Norge owner who claims it fixes the reoccurring spongy brake pedal. I also have a Norge and have not experienced this yet, but I’m going to try it on the EV. I’ll follow this post Incase you find a fix for this. Dave
The rear caliper on my CalVin has the bleed port pointing down and is the lowest point in the system. Unfortunately this has allowed small air bubbles to stay lodged within the upper piston area. I needed to dismount the rear caliper, getting the bleed port pointing up and above the hose. Using a coupe of large zip ties to hold a small piece of wood between the pistons, rotating the dismounted caliper for the bleed port to be pointed up and zip tying the caliper to a frame member above the inlet hose allowed me to purge all air from the rear brake system. PITA but worked like a charm.
This,,, and before I did this,,, I went through the linked brake system fittings from start (M/C) to finish (Caliper) and loosened and bled each fitting,,, it's messy, used lots of rags and paper towels to save the paint, fwiw ymmv If it's the linked system M/C,,, are you getting good response at the linked front caliper? If not maybe a rebuild is in order, just a wag. Kelly
Thanks guys for all the advice They're bled and the pedal is solid.Ended up hanging the caliper high and bled using the speed bleeder. Easy and fast - probably took 45 minutes start to finish with most of the time invested in taking the caliper off and reinstalling.In the future, I will use this method at first sign of frustration in bleeding.Thanks again.Walt