DEAR SIR COULD YOU PLEASE HELP WITH THE DIAGRAM FOR THE ASSEMBLY OF THE FRONT STEERING BOX ASSEMBLY OF A INVICTOR ROAD ROLLER +/- MADE IN 1957 PATENT NUMBER (POWER STEERING UNIT N0 548.070) WE ARE TRYING TO FIX IT BUT CAN NOT GET IT OPEN TO SEE WHY IT IS JAMMED THANK YOU VICTOR HUGO
