As the rotor revolves, the two rotor inlet passages register with charging ports in the hydraulic head. (Figure 4-40).
This allows fuel to flow into the pumping chamber. (Figure 4-41). For improved roller retention, the 6.2L engine will use a new roller shoe. It will provide increased shoe wrap-around by positioning the roller deeper into the shoe. Due to the lower profile of these shoes and rollers, the part number of their companion leaf spring has been changed. The shoes are identified by a – 1 0 marking.
As the rotor continues to revolve, the inlet passages move out of registry, ending charging. Discharge begins when the discharge port of the rotor registers with one of the head discharge outlets. (Figure 4-42).