Hbw Transmission; Initial Operation; Gearbox Operation; When Under Sailor Being Towed - Universal M3-20A Operator's Manual

HBW TRANSMISSION
INITIAL OPERATION
All HBW marine transmissions are test-run on dynamometer
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 insert 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 under the hex head of the dipstick.
Check for leaks and change the fluid after the first 50 hours.
TO CHECK FLUID LEVEL
FLUID LEVEL
DIPSTICK FLUID LEVEL
GEARBOX OPERATION
The neutral position of the operating lever on the control
console must coincide with the neutral position of the actuat-
ing lever on the transmission. Shifting is initiated by a cable
or rod linkage via the actuating lever and an actuating cam.
The completion of the gear changing operation is servo-auto-
matically controlled within the gear. Gear changing should be
smooth, not too slow, and continuous (without interruption).
Direct changes from forward to reverse are permissible, since
the multiple-disc clutch permits gear changing at high rpm,
including sudden reversing at top speeds in the event of
danger.
WHEN UNDER SAIL OR BEING TOWED
Rotation of the propeller without load such as when the boat
is sailing, being towed, or anchored in a river, as well as
operalion of the engine with the propeller stopped (for charg-
ing the battery), will have no detrimental effects on the
tranmission
NOTE:
When the boat is sailing (engine ofJ), the gear lever
can be set in the neutral pOSition, the propeller
(flOW
at idle)
can free wheel without causing any problem.
30
Locking the Prop
If you prefer to lock the propeller when sailing. simply shift
into reverse. Do not shift into forward gear. (Locking the
propeller shaft by an additional hrakc is unnecessary). Return
the shift lever to neutral before starting the engine.
A.
WARNING:
00 not start the engine with the
transmission in gear. Always return the shift lever
tooneutral!
CONTROL CABLES
The transmission is suitable for single lever remote control.
Upon loosening the retaining screw, the shift lever can be
moved to any position required for the control elements
(cable or rod linkage). Make certain that the shift lever docs
not contact the shift lever cover plate: the minimum distance
between lever and cover should be O.5mm.
The control cable or rod should be arranged at a right angle
to the shift lever when in the neutral position. The neutral
position of the operating lever on the control console should
coincide with the neutral position of the shift lever on the
gear box.
The shifting travel, a<; measured at the pivot point of the shift
lever, between the neutral position and end positions A and B
should be at least 35mm for the outer and 30mm for the
inner pivot point.
A greater amount of shift lever travel is in no way detrimen-
tal, and is recommended. However, if the shift lever travel is
shorter, proper dutch engagement might be impeded which,
in tum, would mean premature wear. excessive heat genera-
tion and clutch plate failure. This would be indicated by slow
clutch engagement or no engagement at all.
NOTE:
Check jor proper shift lever travel at least each season.
NEUTRAL
FORWARD 0
CABLEBR~
A
0) \
.. -_ .. -
~
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®
I
CONTROL SHIFTING
CABLE~
COUNTER CLOCKWISE
TRANSMISSION COVER PLATE
00 NOT LOOSEN
THESE FOUR BOLTS
Q.,
SHIFTING LEVER HUB-----..
0.5 mm CLEARANCE
CLOCKWISE
SHIFTING
LEVER