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HBW TRANSMISSION
General Information
All HBW marine transmissions are test-run on a test stand at the factory prior to delivery. For safety reasons the oil
is drained before shipment.
Initial Operation
Fill the gearbox with Automatic Transmission Fluid (DEXRON II) as recommended. The fluid level should be up to
the index mark on the dipstick (see illustration)
To check the fluid level, just insert the dipstick, do not screw in. Screw the dipstick into the case after the fluid level
is checked and tighten. Do not forget the sealing ring under the hexhead of the dipstick.
Operation of Gearbox
To Check Oil Level
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Transmission
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Drain Plug .....
Fluid Level
Dipstick Oil Level
The neutral position of the operating lever on the control console must coincide with the neutral position of the
actuating 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-automatically 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.<Jisc clutch permits gear changing at high rpm, including sudden
reversing at top speeds in the event of danger.
Sailing and Moving in tow
Rotation of the propeller without load while the boat is sailing, being towed, or anchored in a river, as well as operation
of the engine with the propeller stopped (for charging the battery), will have no detrimental effects on the gearbox.
Important: When the boat is sailing (engine stopped), the gear lever must be in neutral position. The propeller is
at idle and can free wheel.
Locking of the propeller shaft by an additional brake is not required: use the gear lever position opposite your
direction of travel for this purpose. Never put the gear lever in the position corresponding to the direction of travel
of the boat.
Westerbeke Diesel Engines
70
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