TM 9-2350-287-20-12-19. TROUBLESHOOTING CHART (continued).q. PRIMARY ROTARY PUMP.The primary rotary pump is located in the APU compartment underneath the APU on the lower right-hand side as you facethe outside of the vehicle. The primary rotary pump is activated by the APU when the check valve located near the inflating-deflating pump is in the IN position. The primary rotary pump is powered by a direct drive from the APU and provideshydraulic pressure to the hydraulic actuator and to the hydraulic motor.Change 1 2-268
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