Operator`s manual
ment. 
Final 
alignment 
should 
not 
be 
attempted 
until 
the 
boat 
has 
been 
allowed 
to 
"settle" 
in 
the 
water. 
Adj 
ust 
the 
V-dr 
i 
ve 
until 
the 
pilot 
diameters 
of 
the 
gear 
shaft 
flange 
and 
the 
propeller 
shaft 
flange 
engage 
freely. 
Butt 
the 
flange 
faces 
together. 
Without 
rotating 
either 
flange, 
check 
with 
a 
feeler 
gauge 
in 
at 
least 
four 
places 
as 
shown 
in 
the 
illustration. 
If 
the 
maximum 
feeler 
gauge 
that 
can 
slip 
between 
the 
flange 
faces 
at 
any 
point 
is 
.003", 
the 
unit 
is 
properly 
aligned. 
If 
a 
thicker 
gauge 
can 
be 
inserted 
at 
any 
point, 
the 
V-drive 
must 
be 
readjusted 
until 
proper 
alignment 
is 
obtained. 
Turn 
the 
pro-
peller 
shaft 
flange 
1/4 
of 
a 
turn 
without 
moving 
the 
gear 
shaft 
flange. 
Try 
inserting 
the 
.003" 
feeler 
gauge 
as 
described 
above. 
The 
gap 
will 
not 
change 
if 
the 
propeller 
shaft 
is 
straight. 
If 
it 
increases, 
the 
shaft 
or 
flange 
is 
bent 
and 
must 
be 
removed 
and 
straightened. 
Rotate 
the 
propeller 
shaft 
flange 
in 
two 
more 
1/4 
turn 
increments 
and 
repeat 
the 
procedure. 
The 
pilot 
diameters 
must 
be 
rechecked 
to 
ensure 
that 
they 
still 
engage 
freely. 
Tighten 
the 
nuts 
on 
the 
mounting 
brackets 
and 
the 
locking 
nuts 
on 
the 
adjusting 
screws. 
Remove 
the 
set 
screws 
from 
the 
brackets 
(none 
on 
RV-IO 
or 
RV-20), 
spot 
drill 
and 
securely 
tighten. 
Recheck 
the 
flange 
alignment 
to 
make 
sure 
the 
V-drive 
did 
not 
move 
out 
of 
alignment. 
Secure 
the 
two 
flanges 
together 
with 
the 
heat 
treated 
bolts 
and 
special 
high 
collared 
lock-
washers 
supplied. 
GEAR 
SHAFT 
FLANGE 
FEELER' 
GAGE 
FLANGE 
ALIGNMENT 
Water 
and Switch Connections 
SET 
SCREw 
~ 
.-ADJUSTING 
SCREW 
/ 
~/LOCKING 
NUT 
\
~. 
~:;.? 
. 
"".\.L.OOSEN 
SLIGHTLY 
/7 
,; 
TO 
ADJUST 
~ 
i 
BRACKETS 
(.( 
a  i 
MOUNTING 
ll~' 
.4'" 
HOLE 
a  "  0 
..... 
p 
dP 
~7@~ 
o 
\MOUNTING 
PLATE 
Hook 
up 
the 
water 
lines 
to 
the 
two 
pipe 
connections 
on 
the 
V-drive 
(intake 
and 
exhaust 
lines 
are 
interchangeable). 
Generally, 
one 
line 
from 
the 
seacock 
to 
the 
V-dr 
i 
ve 
and 
another 
from 
the 
V-dr 
i 
ve 
to 
the 
intake 
of 
the 
engine 
water 
circulating 
pump 
are 
utilized. 
In 
some 
cases, 
scuppers 
through 
the 
hull 
are 
connected 
to 
and 
from 
the 
V-drive 
to 
provide 
independent 
water-cooling 
and 
are 
actuated 
by 
the 
movement 
of 
the 
water. 
With 
closed 
cooling 
systems, 
the 
V-drive 
should 
be 
incorporated 
into 
the 
system 
between 
the 
cooler 
and 
the 
suction 
side 
of 
the 
water 
pump. 
Proper 
operating 
temperatures 
are 
from 
140ยท 
to 
ISO'F, 
although 
safe 
operating 
temperatures 
may 
be 
as 
high 
as 
210"F. 
On 
the 
models 
equipped 
with 
an 
oil 
circulating 
pump, 
the 
#49 
oil 
75 
Westerbeke Diesel Engines 










