Removing Adjustable BB Cup
03-31-16 | 09:50 AM
#1
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Removing Adjustable BB Cup
I just picked up a 1980's CCM frame and am unable to figure out how to remove this type of bottom bracket cup.I am wanting to replace it with a sealed type BB and need to remove it.
I thought that a Pin Spanner might work but I would love to hear if anyone has seen/removed similar type cups.
Thanks in advance
Aidan
Thanks in advance
Aidan
03-31-16 | 09:53 AM
#2
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From: Columbia, SC
Bikes: 2014 Cannondale Synapse Carbon 4 Rival; 2014 Cannondale Trail 7 29; 1972 Schwinn Suburban, 1996 Proflex 756, 1987(?) Peugeot, Dahon Speed P8; 1979 Raleigh Competition GS; 1995 Stumpjumper M2 FS, 1978 Raleigh Sports, Schwinn Prologue
a quick and dirty method (especially since you are going to replace it) is take a flat head screwdriver, stick it in the slot at and angle, then hit it with a hammer until you can turn it by hand. There are probably more elegant solutions and proper tools, but I might start with that.
03-31-16 | 10:15 AM
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Can you get the fixed cup out ? If so, remove the axle, then try big channel lock or big adjustable wrench on those flats.
If that doesn't work, then you can use threaded rod and bolts to rig up a better "grab" on the cup, same as the method for removing stuck fixed cups. For example you can then clamp an adjustable wrench to the cup so it doesn't slip when you apply more force.
PS, make sure you are turning the correct direction. Adjustable cup should be normal counter-clockwise to remove.
If that doesn't work, then you can use threaded rod and bolts to rig up a better "grab" on the cup, same as the method for removing stuck fixed cups. For example you can then clamp an adjustable wrench to the cup so it doesn't slip when you apply more force.
PS, make sure you are turning the correct direction. Adjustable cup should be normal counter-clockwise to remove.
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03-31-16 | 10:20 AM
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03-31-16 | 10:51 AM
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Right, and use a big hammer, like a hand sledge; it makes a difference...
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03-31-16 | 10:52 AM
#9
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Actually, if you are going to replace the BB just use a large pipe wrench on the cup since so much of it is exposed...
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03-31-16 | 11:01 AM
#10
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I doubt if it will work in your case. But BITD the Park Hcw-11 was the tool I used to adjust those style of cups. Please note I said adjust, the tool tabs don't provide much, if any surface to torque on.
Amazon.com : Park Tool Slotted Bottom Bracket Adjustable Cup Wrench, 16mm : Bike Hand Tools : Sports & Outdoors
In your case, anything that will solidly grip the exposed threads ?should? work.
Amazon.com : Park Tool Slotted Bottom Bracket Adjustable Cup Wrench, 16mm : Bike Hand Tools : Sports & Outdoors
In your case, anything that will solidly grip the exposed threads ?should? work.
03-31-16 | 11:03 AM
#11
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I had good luck recently with penetrating oil a couple of times a day and hitting it with a rubber mallet. Since you don't have paint to worry about, you could also try a heat gun to break down any thread locker that might have been used.
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