- To bring the steering to a position of equilibrium, it is sufficient to send a pressure equal to half of that prevailing in the main accumulator. This is valid for all positions of the steering rack. Chamber A .. P ( main ) x 5/2 Chamber B .............-06202+ be 5] Il P/2 (main ) x 5 - To bring about a movement of the steering rack, one need only disturb this state of equilibrium by increasing or diminishing the pressure in chamber B. '