Westerbeke 50 - Operation

adjust the shaft control cable length until
the cockpit control station hand lever is
in the neutral position. Move the cockpit
control hand lever to forward and reverse
positions several times while observing the
transmission control valve lever motion.
The
transmission control valve lever should
move fully into
forward or reverse position
when the hand lever is moved into forward
IV. OPERATION
Principle of Operation
The transmission forward and reverse drives
are operated by transmission oil under pres-
sure. An internal gear type oil pump delivers
the transmission oil, under pressure, to the
external oil cooler. The transmission oil is
returned, still under pressure, to the oil
distribution tube and relief valve. The relief
valve maintains the oil pressure by remaining
closed until the oil pressure reaches 60 PSI.
When the' r;ontrol lever is shifte1 to the
forward position, oil under pressure is de-
li vered to the multiple disc clutch piston,
which moves to clamp the clutch discs and
planetary reverse gear case together. The
discs nnd case then revolve as a solid cou-
pling in the direction of engine rotation. The
reverse drive is engaged by shifting the
control lever to the reverse position, so that
oil under pressure is delivered to the reverse
piston. The reverse piston moves to clamp
the reverse band around the planetary gear
case, preventing the planetary gear case
from moving but allowing the planetary gears
to revolve to drive the ()utput or propeller
shaft in a direction opposite to the rotation
of the engine. With the control lever in the
neutral pOSition, pressurized oil is prevented
from entering the clutch piston or reverse
band piston :md the propeller shaft remains
stationary.
or reverse position, and should return
exactly to the neutral position when the
hand lever is in the neutral position.
G. Remove the oil dipstick, shown in Figure
on page 5, and fill the transmission with
Type A
transmission fluid to the mark on
the dipstick. Replace the dipstick in the
transmission housing.
Starting Procedure
1. Always start the engine with the trans-
miSSion in NEUTRAL to avoid moving the
boat suddenly forward or back.
2. When the engine
is first started, allow it
to idle for a few moments. Stop the engine
and
check the transmission oil level. Add
oil if necessary to bring the oil level up
to
the mark on the transmission dipstick.
NOTE
ON SUBSEQUENT START-UPS, THE
TRANSMISSION OIL LEVEL MAYBE
CHECKED BEFORE RUNNING THE
ENGINE,
WHEN ENGINE OIL IS
CHECKED.
3.
Start the engine again, with the transmission
in NEUTRO\L, and allow the enginetowarm
up to operating temperature.
4. Shift the transmission into FORWARD or
REVERSE as desired. If the engine should
stall when the transmission is shifted to
FORWARD or REVERSE, place the trans-
mission in NEUTRAL before restarting the
engine.
It is recommended that shifting be done at
speeds below 1000 RPM, and preferably in
the 800 RPM, or idle engine range, to pro-
long the life of the engine, transmission,
and boat. EMERGENCY shifts may be at
higher engine speeds, but this is not a
recommended practice.