Borg Warner Velvet Drive Transmission - Westerbeke 90A Four Service Manual

BORG WARNER VELVET DRIVE TRANSMISSION
OIL COOLER
SHIPMENT
For safety reasons,
the
transmission is
not
filled with trans-
mission fluid during shipment and
the
selector lever is tem-
porarily attached
to
the actuating shaft.
Before leaving the WESTERBEKE plant, each transmission
undergoes a test run, with Dextn:m III ATF transmission fluid.
The residual fluid remaining in the transmission after drain-
ing
acts
as a preservative and provides protection against
corrosion for at least one year if properly stored.
TRANSMISSION FLUID
Check the transmission fluid level on
the
dipstick. If the
transmission has not been filled, fill with Dextron III and
continue to use this fluid. During the first 25 hours of opera-
tion, keep a lookout for any leakage at the bell housing, out-
put shaft and transmission cooler. This fluid should be
changed after the first 25 hours and approximately every 300
operating hours thereafter and/or at winter lay-up.
A
CAUTION:
Be certain the transmission is tilled
and the correct size cooler is properly installed before
starting the engine.
SHIFT LEVER POSmON
The gear shift control mechanism and linkage must position
the
actuating lever on the transmission exactly in Forward
(F),
Neutral
(N),
and Reverse
(R)
shifting positions. A detent
ball located behind
the
transmission lever must work freely
to
center
the
lever in
each
position. The gear shift positions at
the helm must be coordinated with those of the Velvet Drive
actuating lever through shift mechanism adjustments. An
improperly adjusted shift mechanism can cause damage to
the transmission. The shifting mechanism and transmission
actuating lever should be free of
dirt
and well lubricated to
ensure proper operation.
Shifting Into Gear
Place
the
gear shift in Neutral before starting the engine.
Shifting
from
one selector position to another selector posi-
tion may be made
at
any time below 1000 rpm and in any
order. Shifts should be made at the lowest practical engine
speed. Start the engine and set
the
throttle at idle speed;
allow
the
transmission fluid
to
warm up for a few minutes.
Neutral
Move
the
gear shift lever
to
the middle position. You should
feel the detent This centers
the
actuating lever on
the
trans-
mission. With the control in
this
position, hydraulic power is
completely interrupted and
the
output
shaft
of the transmis-
sion does not
turn.
NOTE: Some transmissions are equipped with a neutral safe'ty
switch. Unless the transmission actuating lever is perfectly
aligned in neutral, the engine starter will not activate.
Forward
Move the gear shift lever to the forward position. You should
feel the detent The actuating lever on the transmission is in
the forward position. The output shaft and the propeller
shaft
move the boat in a forward direction.
Reverse
Move
the
gear shift lever to the reverse position. You should
feel the detent The actuating lever on the transmission is in
the reverse position. The output
shaft
and the propeller
should move the boat in a reverse direction (astern).
NOTE: Moving the transmission actuating lever from Neutral
Position
to
Forward is always toward the engine. Reverse is
always away from the engine.
If
boat moves backwards with
the gear shift control in the forward position, shut
off
the
engine! This problem may be a result of incorrect movement
of
the actuating lever
by
the gear shift lever.
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