Pedal stuck fast on

[plastic_cyclist]

Has anyone ever come up against a pedal which is totally stuck fast on ?
I've had a few big guys try to twist this off with a bike spanner, but its just not for budging...

Any other tips? maybe a lubricant to loosen ?

 

[Yellow Saddle]

Has anyone ever come up against a pedal which is totally stuck fast on ?
I've had a few big guys try to twist this off with a bike spanner, but its just not for budging...

Any other tips? maybe a lubricant to loosen ?

View attachment 511258

A good, long spanner like a Cyclo.
No lubricant. It doesn't work. It's a myth, but dozens will now come on and swear by this or that magic potion.
Brute force.
A good understanding of which direction is loose, and which is tight.
Don't remove the crank. Do the job on the bike.
Knuckle protectors.

 

[roadrash]

leverage is your friend , ….well that and making sure you are turning it the correct way

 

[plastic_cyclist]

Its the drive side which is siezed, so does that need to loosen anti-clockwise ? Are these things universal?

 

[Brooks]

I volunteer at a community cycle workshop but I'm no expert but we get lots of bikes gifted that have been left in the garden or shed for ages. We see some very stubborn examples.
They spray with WD then leave it for a day and then have a crack with a long spanner. Seems to work on the majority of bikes.

 

[plastic_cyclist]

I've just destroyed a bike spanner using brute force and a piece of wood as a blocker, this is one stubborn beast!

 

[Brooks]

Its the drive side which is siezed, so does that need to loosen anti-clockwise ? Are these things universal?

Best way to remember is to loosen both pedals towards the back wheel and tighten both towards the front wheel.

 

[roadrash]

Best way to remember is to loosen both pedals towards the back wheel and tighten both towards the front wheel.

with the bike the right way up...,

 

[biggs682]

Another vote for leverage

 

[Randomnerd]

Lever. Length of scaff pole over the spanner - as long as workshop allows. Tighten first, then loosen.

 

[plastic_cyclist]

Lever. Length of scaff pole over the spanner - as long as workshop allows. Tighten first, then loosen.

Tighten ??

 

[figbat]

The driveside pedal is a conventional thread. The M520 pedal has a hex recess on the end of the shaft which may help you. My usual trick is to get the pedal spanner or socket drive just a few degrees off of the crank arm, then squeeze them together. Also, it is worth shifting your chain onto the large chainring, so that when you slip or it suddenly gives, you don’t gash yourself on exposed chainring teeth.

 

[sleuthey]

I've just destroyed a bike spanner using brute force and a piece of wood as a blocker, this is one stubborn beast!

I did that, a chrome vanadium one. I would personally use a mole wrench and kettle.

 

[twentysix by twentyfive]

and kettle.

Yep - a bit of heat might help. Heat the crank not the pedal spindle

 

[Randomnerd]

Tighten ??

Often helps to crack a thread to tighten first. As in 1/16th of a turn.