Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

HELP? loose pedal crank

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.

HELP? loose pedal crank

Old 09-08-18, 09:16 PM
Join Date: Dec 2011
Location: Ireland
Posts: 1,047

Bikes: Peugeot teamline

Liked 123 Times in 102 Posts
Put the bolt back in and tighten it up thats not the problem. Before you forget and ride it which will cause real damage. Grab the crank arm at the end and pull it back and forth towards the seat tube (not the same direction as you pedal). You are checking for movement. Now do the same on the other crank.
If they both have play or movement it is the bottom bracket.
Not really a problem unless the play effects gear changes or is annoying when you pedal.
A small amount of play won't make a huge difference and will probably stay that way for many miles. That is unless you want to spend money to fix it which will require tools and parts.
If it is a sealed bb it's a replacement part.
If it's a traditional bb with sepeate cups you might be able to back of the lockring and with a slim wrench get in behind the crank to tighten the cup.
Maybe drip in some oil.
blamester is offline  
Old 09-09-18, 10:02 AM
Join Date: Jun 2010
Location: NW,Oregon Coast
Posts: 43,598

Bikes: 8

Liked 1,360 Times in 866 Posts
Originally Posted by jargey3000
yeah.... i thought i might be able to patch it up myself.
i only paid $50 for this bike, used, about 6 years ago...not sure i want to spend much money on it.
oh well....
Then you have to buy your own tools.. which will still cost money..

(or buy another bike?)
fietsbob is offline  
Old 09-09-18, 10:14 AM
Thread Starter
Join Date: Sep 2018
Posts: 25
Likes: 0
Liked 0 Times in 0 Posts
yeah...ljust weighing my options...
thanks for all the input!
jargey3000 is offline  
Old 09-09-18, 10:39 AM
Bad example
Join Date: Nov 2015
Location: Seattle and Reims
Posts: 3,302

Bikes: Peugeot: AO-8 1973, PA-10 1971, PR-10 1973, Sante 1988; Masi Gran Criterium 1975, Stevenson Tourer 1980, Stevenson Criterium 1981, Schwinn Paramount 1972, Rodriguez 2006, Gitane Federal ~1975, Holdsworth Pro, Follis 172 ~1973, Bianchi '62

Liked 444 Times in 209 Posts
Another option would be a bike co-op, if you have one in your area. But if not, I recommend buying the tools you need to remove and adjust the Cranks and bottom bracket. The tools are not that expensive, and you will gain a lot in knowledge and abilities when you learn to do bike repairs for yourself.
Keeping Seattle’s bike shops in business since 1978
Aubergine is offline  
Old 09-09-18, 10:51 AM
Senior Member
Retro Grouch's Avatar
Join Date: Feb 2004
Location: St Peters, Missouri
Posts: 30,225

Bikes: Catrike 559 I own some others but they don't get ridden very much.

Liked 644 Times in 365 Posts
Can we go back to step one?

That's a square taper crankset. A VERY common problem with them is inadequately torqued left crank arms. When that happens, the arm keeps loosening on it's own and sometimes comes completely off. When that happens, the square hole in the crank arm gets deformed and can never be made to work satisfactorily again.

There is no way that I can tell from here or from your description if that's you, but that's certainly a good bet.
My greatest fear is all of my kids standing around my coffin and talking about "how sensible" dad was.
Retro Grouch is offline  
Old 09-10-18, 02:04 PM
Join Date: Apr 2007
Location: Syracuse, NY
Posts: 7,522

Bikes: 2008 Novara Randonee - love it. Previous bikes:Motobecane Mirage, 1972 Moto Grand Jubilee (my fave), Jackson Rake 16, 1983 C'dale ST500.

Liked 11 Times in 11 Posts
Yes, let's go back to step one - where the OP states he can't budge the crank arm on the spindle. Blamester's procedure will determine where the problem lies.
cny-bikeman is offline  
Related Topics
Thread Starter
Last Post
Bicycle Mechanics
08-28-12 02:30 PM
Bicycle Mechanics
03-29-12 10:26 PM
Deathly Hallows
Bicycle Mechanics
08-29-11 05:21 PM
Bicycle Mechanics
05-12-11 11:12 AM
Road Cycling
06-19-10 01:33 PM

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Your Privacy Choices -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.