Seized pedals on Shimano cranks

[brumby]

Air wrenches can be good because of the hammering action. Might just do the trick.

I've taken off about 4 sets of pedals with the air wrench. We have an old SnapOn unit which never had the strength - grabbed a brand new King Tony wrench off the shelf and one pull of the trigger and bang - loose. The power and the torque of these units is huge.

[The_black_stig]

Using the wrench and brute-force is 1 thing, but have you added some bolt-loosening agents on the screw itself first before-hand?

 

I've used this on a seized external bottom-bracket before and it doesn't cost more than R40 per bottle

http://www.qoileurope.com/ProdQ10.aspx

 

I would only consider drilling holes as the last resort to extract the pedal (either the pedal or the crank-arm will most likely be unusable after any drilling has been done)

[Kranswurm]

It does not make sense

If you used copper slip they should come off easily

Guaranteed you are tightening and not loosening

loosen to the back when facing the crank

[Cheabb78]

Never been able to do it with an allen key. 15mm spanner with a pipe for leverage works every time...

[JXV]

What materials involved here? Titanium, if present, has a nasty habit of seizing in alloy threads, stainless steel too.

 

Copaslip should have helped.

Try Q10 ( penetrating oil). Apply and allow to soak overnight.

 

Remove in the correct direction. A decent quality Allen socket ( Gedore, King Tony, Snap-on, Mastercraft) with a 50cm power bar should be more than enough.

 

Next time use more anti-seize paste and dont overtighten them.

 

The Shimano manual says use grease and 35 to 55 Nm torque to install but that's a lot of torque and they will stay on with less. You might need more than this to loosen them.

 

The Shimano manual also says that if the allen key is 6mm you can't get enough torque with this so rather use a 15mm open ended pedal wrench. Pedals having 8mm allen sockets can be torqued with these.

 

Some Shimano pedals are known for splitting where the Allen key goes in if you apply too much torque to loosen or tighten and this will defintely seize the threads. Rather use a 15mm wrench if you can.

[HowardSteele]

If you can get hold of an impact driver that might do the trick

[Gonduir]

Never been able to do it with an allen key. 15mm spanner with a pipe for leverage works every time...

 

I have the same 105 pedals and i dont see any way to use a spanner on them. Only seems to be a place for an allen key.

 

Like the others have said, some penetrating oil, taking the pedal apart and a vice grips would do the job.

[DenzelM]

Hi Guys

 

I have it swimming in some Q10 now. Going to leave it there for the better part of today. While it may have been over torqued , the poor quailty allen wrenches may have also caused some thread damage thats why the park tool had no effect . Yes the new shimano s don't have a spanner option only allen wrench . Will keep you posted.

 

Regards 

[mazambaan]

I vote for impact driver - manual, electric or air; with good air gun best.  The big Makita 18v wrenches are also impressive.

[Garamundege Mugabe]

I own and use a torque wrench, when re-building engines, especially on cylinder heads. But I never tighten bike pedals beyond just finger-tight - even on my old R500 Chinese lead-pipe special MTB. Never had a pedal come out, never struggled to remove them either.. maybe I'm just lucky..