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Old 07-31-08, 09:39 AM   #1
Widsith
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SR Custom crank removal questions

I have a "clunk" that appears intermittently in my bottom bracket. The crank arms are tight, but have a very tiny amount of play if I grab them and wiggle them side to side. So I want to remove them and inspect the bottom bracket.

However, I've only done this once before, about 35 years ago, and it was an Ashtabula crank. This appears to be a three piece square spindle crankset. The only name stamped on it is "Custom," which I assume means it's an SR Custom. Each crank arm has a threaded hole for a crank puller with a nut inside that is easily unscrewed from what looks like a round threaded bolt end passing through a square hole in the crank arm. I found a picture on the Park Tool website that looks just like it. From reading their instructions I think I need a Park CCP-2 crank puller. But I'm not sure what other tools I'll need for the bottom bracket. There's a lock ring, but I don't know if Park's BBT-7 lockring wrench will fit it or if I should get the HCW-5. Also, I don't know which of their several bottom bracket tools I would need.

All the tool descriptions I've seen talk about compatibility with Campagnolo, Shimano, FSA, etc. but I haven't found any that mention SR. I'm hoping someone who is familiar with SR Custom cranksets can tell me either which tools I need, or which of the better-known manufacturers' cranksets is similar enough that I could buy the same tools that fit them. Before I start ordering tools or pick them up from my LBS I'd like to be reasonably certain they're the right ones.
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Old 07-31-08, 11:50 AM   #2
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Sounds like you have the cup style bearings.
I just use a large curved jaw vise grips. On my 2 bikes, thats worked and I was able to "spin" the adjustable cup out with a couple small Phillips screw drivers.
IF you have to the replace the BB with a cartridge unit, that requires a special tool to do it right, although I've fudged on that too.
Chances are, you have gotten to the problem soon enough that you can just replace the 22 1/4" ball bearings, clean the old grease out, add some new grease and button it up.
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Old 08-01-08, 04:54 PM   #3
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Originally Posted by Bill Kapaun View Post
Sounds like you have the cup style bearings.
I just use a large curved jaw vise grips. On my 2 bikes, thats worked and I was able to "spin" the adjustable cup out with a couple small Phillips screw drivers.
IF you have to the replace the BB with a cartridge unit, that requires a special tool to do it right, although I've fudged on that too.
Chances are, you have gotten to the problem soon enough that you can just replace the 22 1/4" ball bearings, clean the old grease out, add some new grease and button it up.
Thanks, Bill. It turns out I have an old multitool I bought in the early '70s that fits my lockring. Your screwdriver idea for the adjustable cup is a good idea, except I'll use flathead screwdrivers because the cup has two slots in the back, similar to the slots on an old Suntour freewheel, rather than he more typical round holes. I visited my LBS today and showed one of the wrenches a picture I found on the Park Tool website of a crank that looks just like mine and he helped make sure I got the right kind of crank puller, so it looks like I'm all set for doing the overhaul.
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Old 08-04-08, 01:43 PM   #4
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Well, I did the BB overhaul this weekend and there was only one snag. The plastic sleeve that fits over the middle of the spindle to keep grit out of the cups and bearings was missing. I called Jeff, the mechanic at my favorite LBS and he found one in his "old parts box" that was just right for my BB. I didn't need to replace anything else except the grease. This morning I went for a ride and the cranks turn smooth as glass, without any trace of play in the spindle.
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Old 08-04-08, 02:30 PM   #5
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New bearings are cheap! I get them for $.05 ea at my LBS. It's hardly worth the time to inspect the old ones for $1.10!
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Old 08-04-08, 07:43 PM   #6
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New bearings are cheap! I get them for $.05 ea at my LBS. It's hardly worth the time to inspect the old ones for $1.10!
Yeah, I thought about replacing them, but didn't remember to pick any up until after I'd already been to the LBS for something else, and didn't want to quit in the middle of the job to make another trip. It was easy enough to just inspect them, especially since both they and the cups looked brand-new after cleaning them with citrus-based solvent.
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