Some of the tools we used.
after opening the consoles under the steering, we found them with broken holes of screw, taped around them :s
i hate our silly mechanics. anyway i used a solder and some same type of plastic to build those screw pipes again. and was successful in fitting them back
After removing the upper cover of meter it looked like this
after opening the screws of speedo meter console i tried pulling the upper cover of indicator gear box console. found lots of dirt everywhere
after removing meter i found this.
the speedo meter looked like this before cleaning.