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HBW TRANSMISSIONS
DIPSTICK
DESCRIPTION
1.
BRIEF DESCRIPTION
The Type HBW Short Profile Sailing Gears are equipped with a positive-
ly-driven, mechanically-operated helical gearing system.
The servo-
operated multiple-disc clutch requires only minimum effort for gear
changing, making
the
transmission
suitable
for
single-lever
remote
control via a rod linkage, Morse or Bowden cable.
The torque transmission capacity of the clutch is exactly rated, pre-
venting
shock
loads
from exceeding
a
predetermined value and
thus
ensuring maximum protection of the engine.
The
transmission
units
are
characterized
by
low
weight
and
small
overall dimensions.
The gearbox castings are made of a high-strength,
corrosion-r esis tan t
aluminum alloy, chromized for improved sea water
resistance and optimum adhesion of paint.
The transmissions are immersion-lubricated.
Maintenance is restricted
to fluid level checks (see Maintenance).
2.
GEAR CASING
The rotating parts of the HBW transmission are accommodated in an oil-
tight casing, divided
into two halves in the plane of the vertical
axis.
Amply-dimensioned cooling ribs ensure good heat dissipation and
mechanical rigidity.
A fluid filler screw with dipstick and a fluid drain plug are screwed
in to the gear cas ing.
The filler screw is provided with a br eather
hole.
The shaft
for
actuating the multiple-disc clutch extends through a
cover on the side of the gear casing.
151
Westerbeke Engines
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