Westerbeke ATOMIC 4 User Manual

curved plates, dissipates the heat
and prevents fire from extending
through the arrestor.
5. COOLING SYSTEM
a. All engines are equipped with a
positive displacement type water
pump. Six and eight cylinder en-
gine pumps are rubber impeller
type. Two and four cylinder engines
have bronze gear pumps. The oppo-
site type in each case can be ob-
tained on special order.
b. In the Twin, Atomic, Utility
and Super-Four, the water flow is
from pump to block, to head, to
manifold, then overboard.
In the case of the Unimite, the
flow is from pump to manifold, to
block, to head, then overboard.
All six cylinder engines have the
same flow which is: pump to oil
cooler, to manifold for one com-
plete pass, then into block through
four to six holes (depending on
engine size), then to head, to
heat riser on intake manifold, and
then overboarde
c. See special diagram of rather
complicated water flow in special
manual furnished with each v-8
engineo
d. Where either manual or automatic
temperature control is used, vary-
ing amounts of discharge water will
be recirculated. See Fig. 11.
6. REVERSING GEARS
Four types of reversing gear sys-
tems are used on UNIVERSAL engines
covered by these instructions.
Three of these are mechanically
operated, and the fourth is a hy-
draulic system.
a. Joes Model Reversing Gear
(1) The Joes
is currently
model reversing
being used on
gear
the
-41-
Super-Four series engines only.
(2) The forward .d.r ive on this unit is
a double friction clut9h. On the
propeller end are a series of fric-
tion discs of steel and bronze which
are mortised into the engine and
propeller drives and casing. On the
engine end, a split cone clamps the
engine shaft and frictionally locks
the gears to it.
(3) When the reversing gear lever is
moved forward the toggles force home
the plungers, clamping all friction
surfaces together. All moving parts
are then locked and the whole unit
functions as a solid coupling be-
tween the motor and propeller shafts.
(4) Reverse drive is obtained by
throwing the lever back. This re-
leases the forward drive and throws
on the brake band by means of a camG
This cam passes through a slot in
the camshaft that operates between
the cam roll and cam shoe. This
clamps the brake band and prevents
the outside case from revolving.
When the casing is thus held from
revolving, the gearing drives the
propeller in the reverse direction
at 80 - 88% of the motor speed~
(5) To place in neutral, the leve=
is placed midway bety/een forward
and reverse, which releases both
the reverse and forward drives and
permits the gearing to run idle~
b. Paragon Model Reversing Gears
(1) Paragon reversing gears are
used on all current production en-
gines except the Super-Four and
those models which are equipped with
hydraulically operated reversing
gears or Sta-Nu-Tral manual gears.
(2) Power from the engine is trans-
mitted through the engine sleeve
gear and the reverse idler pinions
to the forward clutch or to the re-
verse drive gear.
(3) The forward clutch
consists of

Westerbeke ATOMIC 4 Specifications

General

Brand	Westerbeke
Model	ATOMIC 4
Category	Engine
Language	English