Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 05-04-06, 06:34 PM   #1
jcdebow
squareone
Thread Starter
 
Join Date: Apr 2005
Location: Eastern Canada
Bikes: TREK, Rocky Mountain
Posts: 20
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Help! Seized Pedal

I got a new set of pedals and can't wait to ride with them. Problem is, one of my old pedals is seized on. It's a stainless thread on an aluminum crank arm. The spindle is round with no flat area for a pedal wrench, just a 6mm allen bolt. I've tried everything I know - WD-40, heat, wailing on it - and took it to a local mechanic who bent three allen wrenches before throwing me out.

Any ideas?
jcdebow is offline   Reply With Quote
Old 05-04-06, 09:41 PM   #2
MudPie
Senior Member
 
MudPie's Avatar
 
Join Date: May 2004
Location: Southern California
Bikes:
Posts: 1,874
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by jcdebow
I got a new set of pedals and can't wait to ride with them. Problem is, one of my old pedals is seized on. It's a stainless thread on an aluminum crank arm. The spindle is round with no flat area for a pedal wrench, just a 6mm allen bolt. I've tried everything I know - WD-40, heat, wailing on it - and took it to a local mechanic who bent three allen wrenches before throwing me out.

Any ideas?
Bummer it doesn't have flats. Just to be sure, make sure you're turning the threads in the right direction. (I assume the local mechanic knew one side is left hand/reverse thread).

I had a similar experience recently, but had wrench flats and a good pedal wrench. A soaking of WD40 did not work for me. I tried a penetrant (by Liquid Wrench), let it soak in for a couple of hours, and the pedal finally released. Boy, did it was sure satisfying when the threads started to turn. WD40 is too "multipurpose" to be good at any one purpose. Other posters use PB Blaster to remove seized threads and love the stuff. To prevent future seizures, I loosen and tighten the pedal ever 3 months or so, and apply grease to the threads.

You might also want to try to use a socket bit with hex head, and use a good long breaker bar to remove the pedal. I doubt you can generate enough torque with a hex/allen wrench designed to fit in the hand. When removing a stuck fastener, it's usually a better idea to use leverage and long "steady" force, than to whack at a wrench with a hammer.

Becareful not to damage the wrench opening on the pedal.

Good luck!
MudPie is offline   Reply With Quote
Old 05-04-06, 11:26 PM   #3
spunkyruss
Senior Member
 
spunkyruss's Avatar
 
Join Date: Sep 2005
Location: Hatfield, PA
Bikes: '64 Schwinn Traveler, '73 Astra Tour de France, '79 Fuji Gran Tourer, '86 Dahon folder, '94 Specialized Hardrock, '95 GT Timberline, 2005 Jamis Aurora
Posts: 379
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I would try soaking it in a good penetrant for at least a day or so first, but have you considered destructive removal of the old pedal, or at least removing the pedal body from the spindle?

You might be able to get a pipe wrench on the spindle, between the bearings. If all else fails, you could grind some flats on the spindle and use a BIG adjustable wrench or clamp it in a vice.

I can't think of many things that are more satisfying than a good destructive removal.
spunkyruss is offline   Reply With Quote
Old 05-05-06, 04:54 AM   #4
Ed Holland
8speed DinoSORAs
 
Ed Holland's Avatar
 
Join Date: Jul 2002
Location: Oxford, UK or Mountain View, Ca
Bikes:
Posts: 2,749
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Pour boiling water over the crank end and pedal spindle, plenty of it, don't be shy use plenty, then attempt to unscrew it by your chosen method before it cools. spunkyruss suggests some good tactics for "getting a grip". This worked for me in the past.

Be sure to grease the spindles on the new pedals....

Good luck,

Ed
__________________
Get a bicycle. You will certainly not regret it, if you live.
Ed Holland is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 11:21 AM.