Advice on Pierce Bottom Bracket /Crank

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gkeep

Wore out three sets of tires already!
Jun 11, 2014
808
Alameda, CA
Last week my daughter and I took a ride of about 15 miles and on the way home I started to get a soft squeak and slight catch at the same spot in the crank rotation.

When I first got this ridable about 5 years ago I was unable to overhaul the bottom bracket because I could not get the crank apart. I took it over to Ridable Replicas a few blocks from me and Greg broke his best crank puller trying to get it free. The Woodruff Key seems to have been forced out the backside a bit as you can see from my photos. Since I couldn't pull it apart for cleaning and lube an engineer friend suggested flooding it through the seat tube with WD-40 or Liquid Wrench until it ran clean and then use aerosol white lithium grease to lube it. That has worked fine for probably 600 miles or more of riding but after 5 years it looks like that's no longer enough. I suspect a bearing is getting ground up now.

Today I put some Kroil in there, tried some tapping here and there and a heat gun. I've left it with some wooden shims putting pressure on it and letting the Kroil soak. Anyone have any words of wisdom? I may be in for a long fight with this beast.;)
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bentwoody66

Cruisin' on my Bluebird
Jan 4, 2008
2,768
54
Middletown Ohio
Looks kinda like a 2 pronged fork

Sent from my SM-G950U using Tapatalk
 

SKPC

I live for the CABE
Feb 2, 2018
1,617
63
Utah - United States
You mentioned a heat gun...try a torch after covering the bb shell with foil of multiple layers...then after heating awhile with direct flame on the gripped metal, use the ball joint/tie rod remover. Leave the foil in place as it may help limit any damage to the shell....the crank itself may get a bit of marring...This tool mentioned above is shown below. This should work. Available at your Harbor Freight or local auto parts store..
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Kombicol

Finally riding a big boys bike
Sep 5, 2008
277
Houston, United States
I would reconsider the tie rod fork and use a high quality automotive puller + gas heat
You might crack a cup or cone with the fork
 
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SKPC

I live for the CABE
Feb 2, 2018
1,617
63
Utah - United States
100% agree now that I think about the above comment...The angled fork tangs would put pressure on the metal in only one area on the edge of the BB shell and it could crack the cup if it doesn't budge...auto puller puts even pressure that uses multiple grip arms (2-4) around the inside of the crank only.
Edit: I would imagine that if you took the bike to an auto-repair place, they could remove it in a few seconds. They would also have different sized and designed pullers. Some may not fit between the shell and crank, and if a puller's arms slip off the crank, it will damage or mar the inside of the crank spider. And one last suggestion . If you do get the arms between the shell and spider, you might wrap some bailing wire around them before tightening the pullers' nut. This will keep the arms from opening up and slipping off..
 
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gkeep

Wore out three sets of tires already!
Jun 11, 2014
808
Alameda, CA
Thanks for the replies. I've got a few neighbors who may have the puller, the tricky part is the lack of clearance. Its a very tight fit and the three arms make fitting a two tooth puller problematic. I've got plenty of time to take it slow and steady so no parts are damaged.
 

comet

Look Ma, No Hands!
Sep 23, 2013
99
I've done it with cold chisels gently tapped down alongside the spindle, one on each side driven in opposite directions. PB blaster, tap them in and patience.

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gkeep

Wore out three sets of tires already!
Jun 11, 2014
808
Alameda, CA
here is what they look like inside.

It is a tapered shaft, no key.

Good luck with it.

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I wish mine was a straight taper and didn't have that woodruff key all cock-eyed and jammed in there. At least I have this catalog image as a guide.

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piercer_99

Cruisin' on my Bluebird
Dec 27, 2015
2,376
59
Sanger, TX
I see that key now, dang it, that isn't any fun.

Heat hasn't helped break things loose then?

Too bad you can't get the key to pop forward from pressure on the rear of it.
 

gkeep

Wore out three sets of tires already!
Jun 11, 2014
808
Alameda, CA
I see that key now, dang it, that isn't any fun.

Heat hasn't helped break things loose then?

Too bad you can't get the key to pop forward from pressure on the rear of it.
When I first tried to pull it apart 5 years ago I tried pushing it back through. It looks like someone drove it too far in via the key/slot at some point way back. It may come to drilling it out but I'm willing to give it more time with heat, tapping, penetrant etc. It's been sitting for 3 days while we moved our daughter back to school up in Arcata. I've got all day tomorrow. ;) Might have to switch from the heat gun to a torch but I should be patient. It took me three weeks of liquid wrench and heat to free up all the spoke nipple so they would turn to true the rims. It was worth it, only one spoke went 'ping' and when I looked at it with a hand lens it was 2/3rds rusted through anyway.
 
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