Interpretation ID: aiam1007
Director
Automotive Safety Engineeri- ng
Environmental Activities Staff
General Motors Corporation
Warren
Michigan 48090;
Dear Mr. Lundstrom:#This is in reply to your request of February 1 1973, for an interpretation of paragraph S5.4.1 of Motor Vehicle Safety Standard No. 105a. You have asked if 'a master cylinder with a dam at the 25 percent capacity level' would meet the requirements of the standard.#The paragraph in question requires a 'reservoir compartment for each service brake subsystem serviced by the master cylinder' with the further requirement that 'loss of fluid from one compartment shall not result in a complete loss if brake fluid from another compartment'. in our view, a master cylinder with a dam at the 25 percent level would be compartmentalized within the meaning of S5.4.1.#Sincerely,Robert L. Carter,Associate Administrator for Motor Vehicle Programs;