In my other instructable, i cleared cache using Carliv touch recovery, on suggestion by irishjim, i decided to make a much easier and fuss free method-instructable.
Step 1: Install MobileUncle Tools App on Your Phone ---OR--- If You Can Get Into Recovery
you may have to install mobileuncle tools which needs root if you cannot get into recovery by pressing volume+ and power/lock button.
like in my celkon a35k where recovery was protected.
Step 2: Once Installed Mobileuncle Tools
Scroll to the bottom, find "into recovery mode" option. click and confirm.you get an androbot sleeping or a warning triangle.
Step 3: Entered the Recovery
once you get the bot logo or warning, press your power button once.
if power doesn't, try rest of the buttons including touch to get an options menu like the one in the pic.
now move the highlight to "wipe cache partition" using buttons mentioned in the menu.and confirm the option
you get confirmation like in the second pic.
there you go!! now click reboot system option.
Step 4: Done!!
Your phone rebooted and you have cleared cache by just using Android stock recovery!!