Shimano Hydraulic Disc Brake Lever Conversion
08-02-23, 03:15 AM
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Shimano Hydraulic Disc Brake Lever Conversion
I have a cheap pandemic era hybrid with Shimano 3x8. It came with Shimano ST-EF505 levers, which are a combination lever/trigger shifter unit, on BR-MT200 brake calipers. I am changing a few things around, one of them the brakes. I have the correct MT200 levers and a few questions:
-Can I just unscrew the hollow bolt-type members on the combo lever hoses, leave the olives and barbs as they are, and then screw the hoses into the new levers? Is it that simple, or would I need to clip the ends of the hoses with the old barbs in them and then install new barbs and olives with a barb pressing tool? Do you have to have the pressing tool or can you install the new barb and new olive without specialized equipment?
-If I can just unscrew and then screw the holding members/hollow nuts into the new levers with the existing barbs and olives in place, do I absolutely have to inject mineral oil from the bottom of the system at the caliper? Or can I just put it into the reservoir with one of the oil cups, squeezing the lever to get rid of air bubbles? Could you potentially just remove the faceplate of the reservoir even, and squirt oil directly into the space?
Thank you in advance.
-Can I just unscrew the hollow bolt-type members on the combo lever hoses, leave the olives and barbs as they are, and then screw the hoses into the new levers? Is it that simple, or would I need to clip the ends of the hoses with the old barbs in them and then install new barbs and olives with a barb pressing tool? Do you have to have the pressing tool or can you install the new barb and new olive without specialized equipment?
-If I can just unscrew and then screw the holding members/hollow nuts into the new levers with the existing barbs and olives in place, do I absolutely have to inject mineral oil from the bottom of the system at the caliper? Or can I just put it into the reservoir with one of the oil cups, squeezing the lever to get rid of air bubbles? Could you potentially just remove the faceplate of the reservoir even, and squirt oil directly into the space?
Thank you in advance.
08-02-23, 11:20 AM
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Unscrewing & reusing the hose as is can work, but if you notice that the lever over time bottoms out, & you performed a good bleeding, then it might be allowing air in.
I've installed the barb by hand before having the tool, but it takes a steady hand to accomplish it.
Make sure that the hose it cut square & is clean/free of obstruction. I mainly obtained the tooling just for that later purpose.
It is almost necessary to back feed bleed the system. It may be possible doing it the other way, but it probably will take less time to do it the aforementioned way.
I've installed the barb by hand before having the tool, but it takes a steady hand to accomplish it.
Make sure that the hose it cut square & is clean/free of obstruction. I mainly obtained the tooling just for that later purpose.
It is almost necessary to back feed bleed the system. It may be possible doing it the other way, but it probably will take less time to do it the aforementioned way.
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08-02-23, 10:52 PM
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Unscrewing & reusing the hose as is can work, but if you notice that the lever over time bottoms out, & you performed a good bleeding, then it might be allowing air in.
I've installed the barb by hand before having the tool, but it takes a steady hand to accomplish it.
Make sure that the hose it cut square & is clean/free of obstruction. I mainly obtained the tooling just for that later purpose.
It is almost necessary to back feed bleed the system. It may be possible doing it the other way, but it probably will take less time to do it the aforementioned way.
I've installed the barb by hand before having the tool, but it takes a steady hand to accomplish it.
Make sure that the hose it cut square & is clean/free of obstruction. I mainly obtained the tooling just for that later purpose.
It is almost necessary to back feed bleed the system. It may be possible doing it the other way, but it probably will take less time to do it the aforementioned way.
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