Hurth Hbw Transmission - Westerbeke 44A FOUR-35 C THREE Operator's Manual

ZF MARINE TRANSMISSIONS
DESCRIPTION
The infonnation below is specific to the ZF Transmissions,
the TRANSMISSION TROUBLESHOOTING SECTION
applies to all models.
CONNECTION OF GEAR BOX WITH PROPELLER
HBW recommend a flexible connection between the
transmission gearbox and the propeller shaft if the engine is
flexibly mounted, in order to compensate for-angular
deflections. The installation of a special propeller thrust
bearing is not required, since the propeller thrust will be
taken by the transmission bearing, provided the value
specified under SPECIFICATIONS is not exceeded.
However, the output shaft should be protected from
additional loads. Special care should be taken to prevent
torsional vibration. When using a universal joint shaft, make
certain to observe the manufacturers instructions.
Even with the engine solidly mounted, the use of flexible
coupling or "DRIVESAVER" will reduce stress in the
gearbox bearings caused by hull distortions, especially in
wooden boats or where the distance between transmission
output flange and stem gland is less than about 800mm.
../" ZF 15M
A
CAUTION:
The position of the mechanism behind
the actuating lever is factory-adjusted to ensure equal
shift1ever travel from..-neutral position A and B. If
this mechanism is in any way tampered with, the
transmission warranty will be void.
NOTE: When installing the transmission, make certain that
shifting is not impeded by restricted movability of the
Bowden cable or rod linkage, by unsuitably positioned guide
sheaves, too small a bending radius, etc. In order to mount a
support for shift control cable connections, use the two
threaded holes located above the shift cover on top of the
gear housing. Refer to the WESTERBEKE parts list.
CONTROL CABLES
The transmission is suitable for single lever remote control.
Upon loosening the retaining screw, the actuating lever can
be moved to any position required for the control elements
(cable or rod linkage). Make certain that the shift lever does
not contact the actuating lever cover plate: the minimum
distance between lever and cover should be O.5mm.
The control cable or rod should be arranged at right angle to
the actuating 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 this lever.
The shifting travel, as measured at the pivot point of the
actuating 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
detrimental and is recommended. However, if the lever
travel is shorter, proper clutch engagement might be impeded
which, in tum, would mean premature wear, excessive heat
generation and clutch plate failure. This would 1;>e indicated
by slow clutch engagement or no engagement at
all.
NOTE Checkfor proper lever travel at least each season.
NEUTRAL
SHIFT - -
LEVER
N
COVER
O.Smm
F
MINIMUM DISTANCE
Engines & Generators
42