Westerbeke 30 - Page 113

S.42
1.2 Gear casing
The rotating parts
of the HBWtransmission are accomodated in an oil-tight casing
·divided into two halves in the plane of the vertical axis. Amply dimensioned cool-
ing ribs ensure good heat dissipation and mechanical rigidity.
An oil filler screw with dipstick and an oil drain plug are screwed into the gear
casing. The
filler screw is provided with a breather hole.
The shaft for actuating the multiple-disc clutch extends through a cover on the
side
of the gear casing.
1.3 Gear
sets
The transmission is equipped with shaved, casehardened helical gears made of
forged low-carbon alloy steel. The multi-spline driving shaft connecting the trans-
mission
with the engine is hardened as well.
The driven shaft (propeller side) of the transmission is fitted with a forged coupling
flange.