Well done Dr. Mike, the "BMW surgeon"
41 - 52 of 52 Posts
Thanks, I did note one major screw-up on my part. When I put in the retaining pins on the brake pads, I didn't snug up the left side or put in the retaining clips on either side. Like Homer Simpson says, "Doh!" After I got back from the ride I started to put the clips in and notices that the pin on the left calliper had decided to part company with me and the bike. New pins and retaining hardware (for both callipers) on order from Munich Motorcycles on your side of the country, Eric. Hopefully, Express Post will deliver by Friday.
I have to say, the feel of the brakes is really good. I can sense a little more pressure is needed but I can feel brakes "bite" where before I didn't really have much feel.
I used that argument with my Bride when I purchased the Beemer. I also used the argument that my carpaI tunnel syndrome really gave me a fit riding the Sportster (No lie, it did!) and the BMS was so mush smoother that she would like riding again.
If I had a choice I would have kept the ABS. I'm just glad I was able to find a reasonable alternative.
Joined
·
235 Posts
Is oem all steel braid? If so what in the abs component was at play?
I replaced all flexible original brake fluid lines, front and rear, with Goodridge Premium Performance brake lines. These have a PTFE inner core wrapped in a stainless steel braid. The hard lines (Not sure what they are made of stainless or copper?) were not replaced.
The ABS front circuit was still working. The fault in the ABS system appears to be in the rear pressure circuit. The pump did not run and when I tried to bleed the system; I could not get any flow from the rear ABS circuit while following the instructions for manual bleeding of the ABS system.
Interestingly, after I removed the ABS module and placed it on the bench I noticed leakage of a strange colour fluid. The fluid that leaked out of the rear circuit was blue-green-brown in coulour. The fluid that leaked out of the front circuit was the same colour as the DOT4 fluid I had used to bleed the brakes and front ABS circuit.
After removing the ABS module and installing new lines and a speed bleeded on the rear calliper, I noted that the existing bronze / brass bleed nipple had what looked like corrosion on the pointy end sealing face. When I bleed the rear circuit, I got the same blue-green-brown couloured fluid out. This leads me to believe the previous owner had either not bled the ABS system like he told me had beed done, not done it properly, or added incorrect brake fluid to the system (or perhaps a combination of all three?).
The ABS front circuit was still working. The fault in the ABS system appears to be in the rear pressure circuit. The pump did not run and when I tried to bleed the system; I could not get any flow from the rear ABS circuit while following the instructions for manual bleeding of the ABS system.
Interestingly, after I removed the ABS module and placed it on the bench I noticed leakage of a strange colour fluid. The fluid that leaked out of the rear circuit was blue-green-brown in coulour. The fluid that leaked out of the front circuit was the same colour as the DOT4 fluid I had used to bleed the brakes and front ABS circuit.
After removing the ABS module and installing new lines and a speed bleeded on the rear calliper, I noted that the existing bronze / brass bleed nipple had what looked like corrosion on the pointy end sealing face. When I bleed the rear circuit, I got the same blue-green-brown couloured fluid out. This leads me to believe the previous owner had either not bled the ABS system like he told me had beed done, not done it properly, or added incorrect brake fluid to the system (or perhaps a combination of all three?).
Joined
·
235 Posts
Brown ferrous wheel
Green cupric stanley
Moisture imbued sludge.
Does it taste metallic?
Id love to see the abs pump innerds.
Green cupric stanley
Moisture imbued sludge.
Does it taste metallic?
Id love to see the abs pump innerds.
Can tell you what it tastes like. (I didn't want to spoil my beer.
)As for tearing apart the ABS module, I haven't done that. There are a couple of YouTube videos out there where an ABS pump has been disassembled. I'll probably get into it some day if I don't decide to send it off to RH Electronics in Germany. Right now, however, it's pretty low on my "need to do" list.
J'ai terminé! (I’m finished!). New brake hardware is installed. The bike has been washed inside the Tupperware and out. Everything has been waxed and polished and reassembled. Woohoo! I’m back to riding.
41 - 52 of 52 Posts
