HURTH
HBW/ZF
TRANSMISSION
TROUBLESHOOTING
CONTROL
CABLES
The majority
of
transmission difficulties arise as a result
of
improper clutch adjustments (manual transmissions)
or
. problems with control cables (hydraulic transmissions)
rather than from problems with the transmission itself.
A new cable and perhaps a new linkage mechanism may be
needed.
While the cable is loose, shift the transmission
in
and
out
of
gear using the lever
on
the side
of
the transmission to
make sure there's no binding inside the case.
HURTH!ZF clutches, in particular, are very sensitive to
improper cable adjustments.
·
If
you experience operating problems with the transmission,
shut the engine down. First check the transmission-fluid
level, then have a helper move the cockpit shift lever through
the full range - from neutral to full forward, back to
neutral, into full reverse, and back to neutral
____;
while you
observe the actuating lever on the transmission.
If
the remote
is stiff to operate, break the cable loose at the transmission
and try again.
If
it is still stiff, check the cable for kinks or
excessively tight bends, and check any linkage for binding.
If
the transmission passes these tests, crank the engine and
have a helper put it in forward and reverse while you observe
the propeller shaft;
if
the shaft
isn't
turning, the transmission
needs professional attention.
If
it does tum but there's no
thrust, check
to
see you still have a propeller on the end
of
the shaft or,
if
you have a folding
or
feathering propeller,
Problem
Transmission
gears
cannot
be
shifted.
1.
Fails
to
move
into
gear.
2.
3.
Transmission
shifts
into
gear,
1.
but
fails
to
propel
the
boat.
2.
3.
Delay
of
gear
engagement
or
engages
1.
only
after
an
increase
in
speed.
2.
3.
Transmission
noise
becomes
louder.
1.
2.
Chattering
transmission
noise,
1.
mainly
at
low
engine
speed.
Boat
fails
to
attain
specified
max.
speed.
1.
2.
Oil
Leakage.
1.
2.
that
it
isn't
stuck in the
"no
pitch" position.
NOTE:
If
you suspect a major problem
in
your
transmission,
immediately contact your WESTERBEKE dealer or
an
authorized marine transmission
facility.
Probable
Cause
Verification/Remedy
Actuating
lever
is
loose.
1.
Tighten
damping
bolt
on
shifting
lever.
Shifting
cable
is
broken,
bent
or
2.
Check
the
cable,
reattach
or
replace.
unattached.
Cable
radius
is
too
severe.
Shift
lever
is
binding
against
cover
plate.
3.
Detach
the
shift
cable
and
operate
the
lever
by
hand.
Clearance
should
be
0.02
in
(O.Smm).
Output
coupling
is
not
turning.
1.
Transmission
needs
professional
attention.
Propeller
shaft
is
not
turning.
2.
The
coupling
bolts
are
sheared
or
the
coupling
is
slipping
Output
coupling
is
turning.
on
the
propeller
shaft.
Tighten
or
replace
set
screws,
keys,
pins
and
coupling
bolts
as
necessary.
Output
coupling
and
3.
Inspect
the
propeller.
It
may
be
missing
or
damaged.
propeller
shaft
are
turning.
A
folding
propeller
may
be
jammed.
A
variable
pitch
propeller
may
be
in
"no
pitch"
position.
Lever
travel
N
to
B
not
equal
to
N
to
A.
1.
Adjust
cover
plate
until
the
lever
is
exact
mid-position.
Refer
to
diagram.
Refer
to
SHIFT
LEVER
TEXT
AND
DIAGRAM.
Shift
level
travel
in
insufficient.
2.
Check
shift
lever
cable
length.
See
SHIFT
LEVER
DIAGRAM.
Shift
lever
is
binding
against
cover
plate.
3.
Check
clearance,
adjust
if
necessary.
Damage
starting
on
flexible
coupling
due
1.
Check
alignment,
inspect
flexible
coupling.
If
noise
persists,
to
wear
or
fatigue,
possibly
due
to
inspect
the
damper
plate
between
the
transmission
and
the
misalignment
between
engine
and
engine.
Replace
if
necessary.
drives
haft.
Beginning
damage
of
bearings
in
2.
Transmission
needs
professional
attention.
transmission
due
to
torsional
vibrations,
running
without
fluid,
overload,
wrong
alignment
of
transmission,
or
excessive
engine
output.
The
engine
or
propeller
generates
torsional
1.
Mount
a
flexible
coupling
with
another
stiffness
factor
vibrations
in
the
drive
unit
which
produces
between
the
transmission
coupling
with
and
the
driveshaft.
a
"chattering"
noise
in
the
transmission.
A
higher
stiffness
factor
might
be
sufficient.
2.
Inspect
the
damper
plate
between
the
engine
and
the
transmission.
Replace
if
necessary.
Operating
temperature
is
high.
1.
Wrong
type
of
fluid.
Use
ATE
Check
fluid
level.
Operating
without
cooling.
2.
Check
cooler.
Inspect
coolant
hoses
and
coolant
flow.
Corrosion
at
radial
sealing
ring
and
shaft.
1.
Transmission
needs
professional
attention.
Damaged
sealing
ring
..
Misalignment
of
output
flanges.
2.
Check
alignment.
Must
be
within
0.003
in
(O.OBmm).
NOTE:
If
you
suspect a major problem
in
your transmission,
immediately contact your WESTERBEKE dealer or
an
authorized marine transmission facility.
40
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