Westerbeke 50 - Page 74

S.35
WARNER HYDRAULIC
DESCRIPTION
VVesterbeke Four-107
Engines are also furnished with VVarner
hydraulic direct drive and reduction
gear assemblies.
The direct drive transmission consists
of a planetary gear set, a forward
clutch, a reverse clutch, an oil pump,
and a pres sure regulator and rotary
control valve. All of these are con-
tained in a cast iron housing along with
necessary shafts and connectors, to
provide forward, reverse and neutral
operation. A direct drive ratio is used
for all forward operation. In reverse,
the speed of the output shaft is equal to
input shaft speed, but in the opposite
direction. Helical gearing is used to
provide quieter operation than can be
obtained with spur gearing.
Oil pressure is provided by the cres-
cent type pump, the drive gear of
which is keyed to the drive shaft and
operates at transmission input speed
to provide screened oil to the pressure
regulator.
From the regulator valve the oil is
directed through the proper circuits
to the bushings and anti-friction bear-
ings requiring lubrication. A flow of
lubricant is present at the required
parts whenever the front pump is turn-
ing and it should be noted that supply
is positive in forward, neutral and
reverse conditions.
The unit has seals to prevent escape
of oil.
Both the input and output shafts are
coaxial, with the input shaft splined
for the installation of a drive damper,
and the output shaft provided with a
flange for connecting to the propeller
shaft.
CONTROL LEVER POSITION
The position of the control lever on
transmission when in forward should
be shifted to the point where it covers
the letter" F" on the case casting, and
is located in its proper position by the
poppet ball. The VVarranty is cancelled
if the shift lever poppet spring and/ or
ball is permanently removed, or if the
control lever is changed in any manner,
or repositioned, or if linkage between
remote control and transmission shift
lever does not have sufficient travel in
both directions. This does not apply to
transmissions equipped with VVarner
Gear. electrical shift control.
LUBRICATION
The properties of the oil used in the
transmission are extremely important
to the proper function of the hydraulic
system. Therefore, it is extremely
important that the recommended oil,
automatic transmission fluid (ATF),
Type "A" be used.
PROCEDURE FOR FILLING
TRANSMISSION VVITH OIL
VVhen filling the transmission, oil
should be added until it reaches the
full mark on the dipstick. The quan-
tity of oil depends upon the angle of
the installation. The unit should be
turned over at engine idle speed for a
short time in order to fill all circuits,
including the cooler and cooler piping.
PROCEDURE FOR CHECKING OIL
LEVEL
The oil level should be checked im-
mediately after shutting off engine and
sufficient oil added to again bring the
transmission oil level to the full mark
on the dipstick assembly. The dipstick
assembly need not be threaded into the
case to determine the oil level.· It
need only be inserted into the case
until the cap or plug rests on the sur-
face surrounding the oil filler hole.
The transmission should be checked
periodically to assure proper oil level,
and oil should be added if necessary.