How do I remove the pedal cranks from my EST-520?

[alan_sh]

I want to take the plastic shroud off from around the motor so I can have a look at why the motor is creaking. To do that, I need to remove the pedal cranks and the front sprocket. Are there any instructions or advice that anyone can give me? I have tools and I'm OK mechanically, but I don't even know which way to turn to try and undo the bolts/nuts etc.

cheers

Alan

 

[Zimmerframe]

It's a brose motor, so just the standard removal techniques. From what I remember, unlike pedals they're not directional threads (so make sure you put them back on the correct side or your pedals will then be incorrect. I think they were anti-clockwise to loosen. Sometimes they have self extracting bolts - which as you turn them, pull the cranks off the spindles. You won't really know until you try one though. I think they're 8mm hex.

 

[Mikerb]

I think the cranks and chainring on that bike are Miranda. If the crank has a retaining ring with pin hole surrounding a 8mm hex it is probably self extracting. Just use the 8mm hex anti clockwise on both sides to remove the cranks. If by doing that you remove a bolt complete with the pin holes retaining ring then that is not a retaining ring but rather just a dust cap and your crank is not self extracting. You will then need a crank puller. The chainwheel spider retention is an ISIS standard retaining nut.

 

[alan_sh]

Thanks both - I'll see what happens.

 

[alan_sh]

I got the cranks off. Anti clockwise does it and they just slide off with the threads. I got a cover off (not the sprocket side) and the creaking seems to be coming from the top of the motor. I loosened and tightened the screws but it made no difference. So, it's going into the shop.

 

[Zimmerframe]

Have you check the tightness of the seat tube clamp ? And greased the seat tube.

 

[alan_sh]

It's coming from the motor. I'm not sure how that is related to the seat clamp/tube as it does it when it's on my bike stand (and therefore supported by the frame)

Alan