Take apart LOOK pedals

I have a pair of older Shimano-branded LOOK pedals. Is there a way to take them apart? I think I’ve got a lot of crap buildup inside. Thanks.

bump. sorry.
Any ideas??

Unfortunately google cache has no pictures.

http://66.102.7.104/search?q=cache:__VEV6_8RWcJ:www.parktool.com/repair_help/FAQohSP.shtml+pedal+tool+shimano&hl=en

This may only apply to road SPD. IIRC there were some versions of the Shimano Look pedals that required a special tool. Just as your LBS.