HURTH
HBWn.F
TRANSMISSIONS
INITIAL
OPERATION
All HBW/ZF marine transmissions are test-run on a test
stand with the engine at the factory prior to delivery. For
· safety reasons the fluid is drained before shipment.
Fill the gearbox with Automatic Transmission Fluid
(DEXRON II
or
DEXRON
III). The fluid level should
be
up to the index mark on the dipstick. To check the fluid level,
just insett the dipstick, do not screw it in. Screw the dipstick
into the case after the fluid level is checked and tighten. Do
not forget the sealing ring
uncjer the hexhead
of
the dipstick.
Check for leaks and change the fluid after the first 25 hours,
also make a visual inspection
of
the coupling, oil cooler and
hoses, and shift cables.
DIPSTICK
VENT
OPERATING
FLUIDDMI~
FLUID
LEVEL
NOTE:
Keep
vent holes
clear.
FLUID
CHANGE
Change the fluid after the initial
50
hours
of
break-in,
then every
300 hours
or
yearly. Fluid changes contribute
to
the service life
of
the transmission.
Removing
the
fluid
Push a suction pump hose down through the dipstick hole to
the bottom
of
the housing and suck out the fluid. (If space
allows, use the transmission drain). Remove the drain plug
from the bottom
of
the transmission and allow the fluid to
drain into a container, then reinstall the plug with its sealing
washer. Wipe down the transmission and properly dispose
of
the used fluid. After running the engine, shut down and
recheck the fluid level.
Drain
plug
torque
20-
25
ft/lbs
NOTE
:
When
changing
the
fluid,
take
care
not
to
lose
the
drain plug sealing
washe1:
The
drain plug will leak without
this
sealing
washe1:
A
WARNING:
Never
pull
out
the
dipstick
while
the
engine
is
running.
Hot
fluid
will
splash
from
the
dipstick
hole.
This
could
cause
severe
burns.
LOCKING
THE
PROPELLER
Locking
of
the propeller shaft by an additional brake
is
not
required: use the gear shift lever position opposite your
direction
of
travel for this purpose. Never put the gear shift in
the position corresponding to the direction
of
travel
of
the boat.
WHEN
UNDER
SAIL
OR
BEING
TOWED
Rotation
of
the propeller without load (in neutral), such
as
when the boat is being sailed, being towed, or anchored in a
river, as well as operation
of
the engine with the
prop~ller
stopped (for charging the battery), will have
no
detrimental effects on the transmission
DAILY
OPERATION
D Check the transmission fluid.
D Visually check the gear shift linkage and transmission.
d Start the engine in neutral, allowing a few minutes at
idle to warm the fluid.
D Shift into gear.
NOTE
:
Too
low
an
idle speed will produce a chattering noise
from
the
transmission gear and damper plate.
In
such
cases
the
idle speed should
be
increased
For additional information refer to the following text in this
Transmission Section:
SHAFT
COUPLINGS,
MAINTENANCE
AND TRANSMISSION
TROUBLESHOOTING.
General·
Gear
ratio
(optional)
Lubricating
Fluid
Transmission
Sump
Capacity
Propeller
Rotation
(Hurth/ZF
Standard
Transmission)
Case-
hardened
helical
gears,
with
a
servo-
operated
multiple
disc
clutch.
HBW
50/ZF
5M
(2.05
:
1)
HBW
100/ZF
10M
(1.79:
1)
HBW
150V/ZF
15MIV
(2.13:
1)
HBW
150NZF
15MA
(1.88
:
1)
ATF-
or
Dextran
-If
or
/If
HBW
50/ZF
5M
0.63pts
(0.3L)
HBW
100/ZF
10M
0.74pts
(0.35L)
HBW
150V/ZF
15MIV
2.1pts
(1.0L)
HBW
150NZF
15MA
1.0pts
(0.47L)
Transmissions
turn
Right
Hand
propellers
~
4
Unlvarsal
N&M·1;1@JM•WJ:J;W
38
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