You'll find an exploded view and some idiotic instructions which fortunately include maintenance intervals and torque values.
Although not stated by viewing the exploded view you can do this.
The shiny things at the bottom of the lowers are some caps. Forget about them for now.
Back all the way off the preload adjusters. Now remove them. Pull out the springs assy's. Somewhere in there you gotta find one bolt head into each leg. By unthreading these bolts you should be able to pull out the lowers. It seems you will need a very long allen wrench (I can't tell the lenght and size).
Once those bolts are removed just pull out the lowers and apply some of the grease I mentioned before on the bushings. Do not forget to clean everything first. Be carefull when removing the lowers or you could damage the wipers.
Now reassemble everything as you found it. Use some teflon lube at the interface between the wipers and the stanchions. DO NOT SKIP THE STEP OF FINDING OUT THE SUNTOUR'S INSTRUCTIONS. Get them and print the stuff so you know what you might find out.
Also, visit www.enduroforkseals.com
Chris has some very good stuff for forks maintenance.
Sorry if the instructions given seem like inaccurate but that's all I can do without ever having serviced a fork like yours and the instructions given by Suntour.