Fan Drive and Clutch

distributor where it is dispersed to the ball

b. Fan Drive and Clutch (figs. 1-13 and 1-14).

The fan clutch is oil cooled. The fan clutch drive

bearings and to the clutch disks. The oil moves

and driven disks are loaded by the centrifugal

between the clutch disks by centrifugal action

action of clutch balls and springs housed in the

and drains back through the fan drive housing

into the engine oil pan. Early cooling fan clutch-

clutch assembly. The balls and springs are in the

es had a hydraulic disengagement feature, The

driven member and apply upward force to the

clutch disks. The clutch oil enters the fan drive

clutch actuating piston (fig. 1-13) for this

vertical shaft from the fan drive housing through

hydraulic disengagement feature was eliminated

an annular groove in the shaft. The oil flows

on late engines, and the clutch has been greatly

through a central hole in the shaft to a

simplified and improved (fig. 1-14).

Figure 1-14. Mechanical cooling fan clutch--sectional view.

1-19