Here's a Link to an exploded view. Click on the picture to expand it.
http://www.e-gunparts.com/productschem.asp?chrMasterModel=0860z511
Basically on these .22 bolt rifles, you don't disassemble unless there's parts that need replacing.
What I recommend is either get a couple of cans of "gun scrubber" at the gun store or Wal-mart and give it a good blast cleaning, or buy a gallon of cheap Wal-mart paint thinner.
Pour a enough into a coffee can to cover the bolt, and stand the receiver up in it an let soak for a few hours.
Pull out every now and then and give the parts a good scrub with a toothbrush and bottle brushes.
After soaking and scrubbing, flush with clean thinner, then dry by either blowing with compressed air, or shake it off as well as possible and warming up with a hair dryer.
Make sure to get the bolt dry internally.
DO NOT use high heat.
After whatever cleaning method you use gets the crud off and everything is dry, get a good spray lube like CLP Breakfree and spray everything dripping wet.
Shake off the excess, and allow to drain.
Wipe dry and reassemble.
This eliminates taking it apart and breaking/loosing/ can't get it back together problems.