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 TM 55-1905-220-14-1
f. When in forward, (Figure 1-37), all parts that rotated in neutral at engine speed are still turning. However, when the
forward clutch is engaged, the steel clutch plates make positive contact with the sintered-metal clutch plates. The
external lugs of the sintered-metal clutch plates drive the clutch spider which is spline-connected to the forward pinion.
Therefore, the forward pinion rotates in either direction at engine speed when the forward clutch, is engaged. The
forward pinion is meshed with the counter shaft gear which is keyed to the counter shaft. The propeller flange is spline-
connected to the counter shaft and, therefore, the flange rotates in anti-engine direction when in the forward position.
The counter shaft and propeller flange rotate at a reduced speed due to the ratio between the counter shaft gear and the
forward pinion.
Figure 1-37. Marine Gear Power Flow-Forward
1-72
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