Operating Temperature; Transmission Cooler; Maintenance - Westerbeke Universal M3-20B Operator's Manual

HURTH HBWJZF TRANSMISSIONS
OPERATING TEMPERATURE
A
WARNING:
If the transmission fluid temperature
is too high, stop the engineimmedlatelyand check the
transmission fluid.
NOlmal 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 (l30°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 exlernally 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.
TIIANSMISSION
-~It.!::!.;~-" ef!.!/9.~(!q1\fX
INSPECT FOR
EROSION AND LEAKAGE
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 paiot).
D
Fill the transmission with Dextran 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 selVice.
For additional infonnation 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
+
;.,Unlvanal
MARINE POWER
39