Need help re-tightening bicycle crank

[loldamar]

I hope I'm posting in the right place.

So as I was riding this morning, I noticed my pedals starting to loosen.

Upon closer inspection, looks like the entire crank is loose, but I have no idea how to retighten it.

Pics: http://imgur.com/rBREnrR,MkHK6PD,2BK1Ue1,BP5yX4Y#0

(ignore the cord in the second image, those are my headphones)

In the fourth image, the ball bearings are exposed.

Thanks!

[GeorgeET]

Hard to tell from photos but looks like this one. Looks like the bearings could use grease too.

http://sheldonbrown.com/opc.html

[loldamar]

(04-12-2014, 08:09 PM)GeorgeET Wrote:  Hard to tell from photos but looks like this one. Looks like the bearings could use grease too.

http://sheldonbrown.com/opc.html

thanks a bunch this is exactly what I needed