
THE
HBW
150 TRANSMISSION
General
The HBW
150 transmission
Is
equipped with a positively-driven. mechanically-operated helical gearing sys-
tem. The servo-operated multlple-disc clutch requires only a minimum effort
to
change drives. This feature
makes the transmission suitable for a single-lever remote control with a rod linkage. such as a Morse
or
Bow-
den cable. For safety reasons. the transmission is NOT filled with transmission fluid for shipment. Before
leaving the factory. however. each transmission is thoroughly tested with fluid in the transmission. This
test-
ing. among other things. provides all internal parts with a coating
of
transmission fluid. This fluid acts as a
preservative. providing reliable protection against corrosion
for
at least one year if the transmission
is
proper-
1y
stored.
Lubrication
DIPSTICK
AND
FIll
PORT
The HBW 150 transmission
is
an immersion-lubricated type. Fill the transmission up
to
or
near the
top
of
the machined notch cut on the dipstick with approximately 0.60 U.S. quarts (0.56 liters)
of
automatic trans-
mission fluid (ATF). The HBW 150 has its own dipstick and oil sump.
Change the transmission fluid after the first
30 hours
of
engine operation and thereafter every 250 hours (or
once per year. minimum). The HBW
150 transmission has a drain plug for draining the old transmission fluid.
To ensure that most
of
the old fluid is drained from the transmission. run the engine in NEUTRAL for ap-
proximately 10
to
15
minutes so the transmission fluid may warm and flow better from the transmission. This
transmission fluid may also be removed
by
inserting a small tube through the dipstick opening (where the
transmission fluid is added) and attaching a pump onto the tube so the old fluid may be sucked
out
NOTE: When removing the dipstick
or
drain plug. make sure the thin aluminum sealing washer.
located under the plug.
is
not lost. Leakage will result
if
the sealing washer
is
not present.
Westerbeke
Diesel
Engines
50
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