A generator rotor comprising: a rotor body extending axially; a plurality of slots extending longitudinally along the rotor body and disposed at a radial depth in a periphery of the rotor body; a retaining ring disposed at an axial end of the rotor body enclosing an axial end portion of the rotor body; and a plurality of components disposed in each of the slots, the components comprising: rotor windings disposed on top of a sub slot, the rotor windings comprising a plurality of winding radial vent apertures, a creepage disposed on top of the rotor windings, the creepage comprising a plurality of creepage radial vent apertures, a spring disposed above the creepage with a slot clearance therebetween, the spring comprising a plurality of spring radial vent apertures, an amortisseur disposed on top of the spring, the amortisseur comprising a plurality of amortisseur radial vent apertures, a wedge disposed on top of the amortisseur, the wedge comprising a plurality of wedge radial vent apertures, and a step pin radially disposed through the amortisseur and inserted into the spring, the step pin comprises a pin head, a pin shoulder and a pin body, wherein the plurality of radial vent apertures of each of the components are axially aligned to form a plurality of radial vent passages, wherein the step pin is arranged axially apart from adjacent radial vent passages, wherein the spring comprises a pin hole for the pin body extending through, and the step pin radially extends through the spring into the slot clearance between the spring and the creepage, wherein a diameter of the pin head is smaller than a diameter of the pin shoulder and is larger than a diameter of the pin body, wherein the amortisseur comprises a counter bore to retain the pin head and the pin shoulder, and wherein a diameter of the counter bore for retaining the pin shoulder is smaller than a diameter of the amortisseur radial vent aperture, and dimension of the counter bore corresponds to dimensions of the pin head and the pin shoulder such that the pin head and the pin shoulder are tightly disposed through the amortisseur, and dimension of the pin hole corresponds to dimension of the pin body such that the pin body is tightly inserted through the spring. a rotor body extending axially; a plurality of slots extending longitudinally along the rotor body and disposed at a radial depth in a periphery of the rotor body; a retaining ring disposed at an axial end of the rotor body enclosing an axial end portion of the rotor body; and a plurality of components disposed in each of the slots, the components comprising: rotor windings disposed on top of a sub slot, the rotor windings comprising a plurality of winding radial vent apertures, a creepage disposed on top of the rotor windings, the creepage comprising a plurality of creepage radial vent apertures, a spring disposed above the creepage with a slot clearance therebetween, the spring comprising a plurality of spring radial vent apertures, an amortisseur disposed on top of the spring, the amortisseur comprising a plurality of amortisseur radial vent apertures, a wedge disposed on top of the amortisseur, the wedge comprising a plurality of wedge radial vent apertures, and a step pin radially disposed through the amortisseur and inserted into the spring, the step pin comprises a pin head, a pin shoulder and a pin body, rotor windings disposed on top of a sub slot, the rotor windings comprising a plurality of winding radial vent apertures, a creepage disposed on top of the rotor windings, the creepage comprising a plurality of creepage radial vent apertures, a spring disposed above the creepage with a slot clearance therebetween, the spring comprising a plurality of spring radial vent apertures, an amortisseur disposed on top of the spring, the amortisseur comprising a plurality of amortisseur radial vent apertures, a wedge disposed on top of the amortisseur, the wedge comprising a plurality of wedge radial vent apertures, and a step pin radially disposed through the amortisseur and inserted into the spring, the step pin comprises a pin head, a pin shoulder and a pin body, wherein the plurality of radial vent apertures of each of the components are axially aligned to form a plurality of radial vent passages, wherein the step pin is arranged axially apart from adjacent radial vent passages, wherein the spring comprises a pin hole for the pin body extending through, and the step pin radially extends through the spring into the slot clearance between the spring and the creepage, wherein a diameter of the pin head is smaller than a diameter of the pin shoulder and is larger than a diameter of the pin body, wherein the amortisseur comprises a counter bore to retain the pin head and the pin shoulder, and wherein a diameter of the counter bore for retaining the pin shoulder is smaller than a diameter of the amortisseur radial vent aperture, and dimension of the counter bore corresponds to dimensions of the pin head and the pin shoulder such that the pin head and the pin shoulder are tightly disposed through the amortisseur, and dimension of the pin hole corresponds to dimension of the pin body such that the pin body is tightly inserted through the spring.