Westerbeke ATOMIC 4 User Manual

from the string, which represents
the center of the shaft, to the
position of the hangers using the
figures given on the engine scale
drawing. If the mounting lugs are
parallel to the centerline of the
shaft, the top of the engine beds
are then simply cut at the same an-
gle as the string and below it the
distance of the mounting lugs. If
the forward and rear mounting lugs
are offset, the top of the engine
bed is cut in steps at the angle of
the string with the distance from
the str ing to the top of each equal-
ing the distance from the centerline
of the engine to the mounting lugs.
After the pattern of the engine bed
is completed, replace the propeller
shaft and fasten the propeller
coupling in place on the shaft. The
engine must now be lifted into the
boat and temporarily blocked in
place with the propeller coupling
in as close alignment to the coup-
ling half on the propeller shaft as
possible. If the engine is a small
one, this can be done by fastening
a pole securely to the lifting eye
on the engine and with two men on
each end of the pole bodily lifting
the engine in place. If the engine
is large or help is not available,
an "A I! frame wi th a block and tackle
can be used. Or the job can be done
by a trucl{ equipped with a winch.
In any case, extreme care must be
taken that all hitches used are se-
cure and all tackle of sufficient
strength to hold the load. A broken
rope or slipped knot at this point
could result in a very leaky boat
and a very discouraged boatman.
With the engine securely blocked in
place, slide the engine beds in
place under the engine and on the
inside of the stringers. i~'hen in
place, fasten them temporarily with
~4C" clamps. Four 1/2" holes are
then bored equally spaced along the
length of the engine bed, through
the stringers and bed. One-half
inch carriage bolts are then in-
serted in the holes and securely
-8-
tightened. Use washers under all
nuts. The position of the engine
hold-down bolts is now marked on
the top surface of the engine beds.
In some cases, it will be possible
to drill these holes without dis-
turbing the engine; in others, the
engine must be removed. Drill these
holes us ing a dr ill 1/8 inch smaller
than the lag screws to be used for
fastening the engine in place.
Three-eighths-inch lag screws which
will project three inches into the
engine beds will be sufficient.
Insert the engine hold-down bolts
with washers under the heads and
screw them to within three or four
turns of being tight.
4. ALIGNING THE ENGINE
The blocking can now be removed. from
the engine and the engine lined up
with the propeller shaft. The en-
gine will be in alignment when the
faces of the two halves of the
propeller coupling are parallel
within .003 of an inch or less. A
feeler gauge is us~d, checking all
around the two faces and shims ad-
ded under the engine hangers until
the two faces are in alignment. If
no feeler gauge is available, four
narrow str ips of paper can be placed
between the two faces at four points
around the circle. Any variation of
alignment can then be felt by the
looseness of anyone of the strips.
Each time a shim is added or removed,
tighten all hold-down bolts and re-
check alignment. Extra care at this
time will payoff in terms of fu-
ture performance.
Do not attempt to bring the two
faces of the coupling together by
springing the propeller shaft. ,~rhen
the engine is in perfect alignment,
bolt the two halves of the coupling
together and remove the wedges from
around the propeller shaft. ~ith
the engine in neutral, the propeller
shaft should turn easily. If not,
check for tightness in the stuffing
box or slight misalignment in strut
location or angle.

Westerbeke ATOMIC 4 Specifications

General

Brand	Westerbeke
Model	ATOMIC 4
Category	Engine
Language	English