HURTH
HBW/ZF
TRANSMISSIONS
OPERATING
TEMPERATURE
A
WARNING:
If
the
transmission
fluid
temperature
is
too
high,
stop
the
engine.immedlately
and
check
the
transmission
fluid.
Normal operating temperature
of
the transmission fluid
should be in the range
of
122"F (50°C) to 212"F (100°C). A
maximum temperature
of
266°F ( 130"C) may be only
·reached for a short time.
Make certain there is enough space around the transmission
to provide good ventilation and cooling.
TRANSMISSION
COOLER
Some
UNIVERSAL
model's transmissions are equipped
with an externally attached convection type transmission
cooler.
The cooler is a separate part
of
the transmission which
prevents any possibilities
of
coolant diluting the transmission
fluid. However, the continued flow
of
coolant thru the cooler
will, in time, erode the inside
of
the cooler causing external
leaks.
A transmission cooler may last ten years
or
more but, in
some circumstances, depending
on
operating hours, tropical ·
waters, maintenance, etc. it might only last half that time.
WESTERBEKE recommends having a spare cooler aboard.
TRANSMISSION
COOLER
PERIODICALLY
INSPECT
FOR
EROSION
AND
LEAKAGE
REPLACE
AS
NEEDED
MAINTENANCE
Transmission maintenance is minimal. Keep the exterior
housing clean, check the fluid level as part
of
your regular
routine, and change the fluid every
300 operating hours.
Periodically inspect the transmission and the cooler for leaks
and corrosion. Lubricate the cable connections.
Lay-up/Winterize
Storage requires special care. Follow these procedures:
D Drain water from the transmission oil cooler and replace
with a proper mixture
of
antifreeze coolant.
NOTE:
This
operation will normally occur
when
the
engine
raw
water cooling system
is
properly
winterized.
D Clean up the transmission and touch up unpainted areas
(use heat resistant paint).
D Fill the transmission with Dextron III ATF fluid to pre-
vent'internal corrosion (extended storage only, twelve
months or more).
. D Loosen attaching hardware from the transmission output
flange and propeller shaft coupling flange before remov-
ing the boat from the water. Separate the flanges and
spray with lubricant.
D Inspect the gear shift cable, linkage, and attachments.
Look for corrosion
of
the end fittings, cracks or cuts
in
the conduit, and bending
of
the actuator rods. Lubricate
all moving parts.
NOTE:
If
the
transmission
is
to
be
stored for a
long
time
·(twelve months or
more),
it should
be
topped off
with
fluid
to
prevent internal
corrosion.
Reduce
the
fluid
level
before
putting
the
engine back into
service.
For additional information contact:
HURTH
MARINE
GEAR
ZF
Industries
Marine
US Headquarters
3131
SW
42nd Street
Fort Lauderdale,
FL
33312
Tel.: (954)
581-4040
Fax: (954) 581-4077
4
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39
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