crank bolt dust cap removal
09-12-11, 08:23 PM
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crank bolt dust cap removal
The dust caps on my early '90s deore crankset have a pair of small holes for a pin spanner. I'm not eager to buy a new tool just to get the dust caps off; is there an easy DIY for this?
09-12-11, 08:42 PM
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If it isn't in too tight you can try my "chop sticks" spanner. You need two pieces of stiff wire (like spoke material) small enough to fit the holes, or sharpened to long tapered points to fit. You can also use one piece bent into a "U". Fit the wires into the holes and grip thel tightly, pressing them in while putting a screwdriver between them and using that to turn them out. The screwdriver has to be against the face of the dustcap to all the torque goes to the points rather than spreading the wires apart.
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09-12-11, 09:11 PM
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You might try a pair of needle-nose pliers, then use FBinNY's screwdriver method, although I am reluctant to advise abusing tools. I doubt that a paperclip would be rigid enough. Maybe 2 nails driven through a piece of wood at the proper spacing would be a better alternative tool.
09-12-11, 09:43 PM
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Paper clips most definitely won't do it unless very little torque (way less than even on a good day) is needed. I have a pair of "chopsticks" I made years ago from a pair of ice picks. If you have a spoke that should probably do it, though you might have to taper the ends a bit to fir the holes.
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FB
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An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
09-13-11, 01:03 AM
#7
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Shimano has a tool that holds the ring nuts on the chainwheel bolts,
on the opposite end it has the pin spanner, made to fit those dust caps.. .
It's dual use makes it practical, and they're cheap.
on the opposite end it has the pin spanner, made to fit those dust caps.. .
It's dual use makes it practical, and they're cheap.
