Engine: General Subjects

1. A Prevent both units from operating simultaneously which could result in doubling the flow of oil and pressure leading to over-pressurization of the system
2. B Allow an alternate main pump to start in the fully-loaded condition thus developing immediate full torque
3. C Prevent either main pump from being hydraulically motored when idle by cross pressure flow
4. D Allows both units to operate simultaneously which result in doubling the flow of oil and speed of the steering gear

Tip: press A-D to answer