Worm and sector type

in this type of steering gearbox system     

one side of the shaft in steering  

being worm  In vehicle  From above and from down 

with the help of bearing Stays fit 

for setting bearing ply  

   Of the bearing in the casing 

by putting less more shims

   Does ply set 

  And sector or worm for setting   Back flash

of side at cover  Adjusting Screw  And lock nut is  Given 

these sector on the shaft stays putting  

  this steering shaft  From the car and  On that worm Swirls 

at  worm sector and sector shaft Is rotated  From sector shaft  droup arm being rotated  

From the side lonkage The wheel gets power