Metering device for steering brake lube systems

In a rotative drive assembly having a clutch pack provided with a selectively movable clutch piston means for selectively engaging the clutch, a brake pack provided with a selectively movable brake piston means for selectively actuating the brake, and a source of pressurized lubricating oil, the improvement comprising:

• conducting means for conducting lubricant oil from the source to said clutch pack and brake pack including control means for selectively controlling the delivery of the lubricating oil therethrough as an incident of movement of the brake piston means, said conducting means being arranged to provide selectively to the brake pack a large flow of said oil for concurrently cooling and lubricating the brake pack when the brake is actuated and a decreased flow for only lubricating the brake pack when the brake is not actuated, said conducting means further controlling the flow of said oil to said clutch pack as a function of the flow to said brake pack;
• and a carrier extending between said brake pack and clutch pack provided with passage means forming a portion of said conducting means, said clutch piston means including a clutch piston and a retainer movably carrying the clutch piston, said conducting means comprising passage means through said retainer communicating with said carrier passage means, and chamber means in said clutch piston in communication with said retainer passage means.