Shimano PD-M520 - service advice?

[Amanda P]

Does that mean I can borrow the one you've nicked, Spandex? Or can I buy one of the ones on order?

I had considered using the need for a tool as an excuse to buy new pedals, but I have three sets of them, all of which are squeaking!

 

[spandex]

Does that mean I can borrow the one you've nicked, Spandex? Or can I buy one of the ones on order?

I had considered using the need for a tool as an excuse to buy new pedals, but I have three sets of them, all of which are squeaking!

Both That is why I am getting two

 

[Amanda P]

Excellent!

 

[mickle]

Eh?

 

[spandex]

What are you doing on Here!!!!

 

[Amanda P]

Thanks, Mickle. Most kind of you.

 

[Marin Maniac]

I have bought the special tool (M520 pedals) and cannot for love nor money get the pedal of the axle. If you try to unscrew it it keeps turning.

As for the 90degree twist that does not work either!

Anyone?

 

[Amanda P]

I have just greased up two sets of PD-M520s following Mickle's instructions, which are complete and effective but for one detail: the locknut on the right hand pedal has a left-hand thread.

I'll let you know if it's fixed the squeaking.

Thanks Mickle. And Spandex. Your tool will be on its way back tomorrow.

 

[cheadle hulme]

If you've got a grease gun, just drill a small hole and fill it with fresh grease. Stops the squeaks just as well as stripping them down.
You can get new 520s for £20 anyway.

 

[Marin Maniac]

I have just greased up two sets of PD-M520s following Mickle's instructions, which are complete and effective but for one detail: the locknut on the right hand pedal has a left-hand thread.

I'll let you know if it's fixed the squeaking.

Thanks Mickle. And Spandex. Your tool will be on its way back tomorrow.

Can you tell me how you removed the pedal body from the pedal axle?

 

[Amanda P]

I did as Mickle suggested. I put the tool in the vice. I pushed the pedal spindle through the tool so that its toothed bit engaged with the toothed bit of the tool. I tried turning the pedal body with my hand, to unscrew it from the axle, but couldn't. So I used a big pair of pliers to get a bit more leverage.

Once I'd overcome the initial stiction, all four of the pedals I've so far worked on unscrewed smoothly and easily.

Take care screwing them back on; it's a fine thread and easily crossed. Plus any excess grease will be squeezed out through the thread and though the other end of the toothed plastic bit on the pedal.

It has stopped the squeaking; some of the bearings were clearly dry.

I know 520s are cheap, but I'd rather spend three minutes re-greasing one every year than throw it away and buy another pair. (Can I have all the ones you throw away, Cheadle?)

 

[Marin Maniac]

I did as Mickle suggested. I put the tool in the vice. I pushed the pedal spindle through the tool so that its toothed bit engaged with the toothed bit of the tool. I tried turning the pedal body with my hand, to unscrew it from the axle, but couldn't. So I used a big pair of pliers to get a bit more leverage.

Once I'd overcome the initial stiction, all four of the pedals I've so far worked on unscrewed smoothly and easily.

Take care screwing them back on; it's a fine thread and easily crossed. Plus any excess grease will be squeezed out through the thread and though the other end of the toothed plastic bit on the pedal.

It has stopped the squeaking; some of the bearings were clearly dry.

I know 520s are cheap, but I'd rather spend three minutes re-greasing one every year than throw it away and buy another pair. (Can I have all the ones you throw away, Cheadle?)

Arrrrrrghhhh!!!

Thats what I thought you'd say!

Why does mine then just keep turning. A poster (I think Spandex) mentioned a twist lock fitting i.e. turn 90degrees. When I've got the pedal attached to the axle removal tool, if it turn it 90degrees the main pedal body seems to seperate slightly from the axle but if you carry on another 90degrees it seems to return back to its normal position (pedal body flush with knurled lock ring).

This is really frustrating me as I'm dying to get the pedals apart and re-grease them, but all I keep reading is how people remove them by just twisting the main pedal body off the axle!!!!

 

[Amanda P]

It sounds a bit as if you and Spandex are describing a different pedal to me, Mickle and Fossy.

I don't think I can help any further. Mickle? Help!

 

[Marin Maniac]

It sounds a bit as if you and Spandex are describing a different pedal to me, Mickle and Fossy.

I don't think I can help any further. Mickle? Help!

If only it was a different pedal.

Its an M520

 

[rogerzilla]

Watch out for the left-hand thread, as Uncle Phil said. Get new bearings - these pedals develop play really quickly from new so you'll need to adjust, not just lubricate, anyway. They're 3/32", which is really small, and you'll need a packet of 50.

Once you've got the "cartridge" out, it's all conventional tools and quite obvious.