Westerbeke 7.0KW BCG-60HERTZ Operator's Manual page 27

Oil Drain Hose
An oil sump drain hose is installed on the engine with the discharge end secured by a bracket at the front of
the engine. Oil may be drained from this hose by removing the cap and the discharge end of the hose from
the support bracket and lowering the hose into a container. The hose cap fitting is 1/4 inch NPT (National
Pipe Tap) and can be extended or have a pump added, by the operator, for easier removal of the old oil,
if
desired.
Connecting Pressure Sensing Devices to
Oil
Galleries
Oil pressure sensing devices, such as senders and switches, must not be connected to an engine's oil gallery
with the use of extended nipples or tees. The reason is simply that continued engine Vibration causes fatigue
of the fittings used to make such
a
connection. If these fittings fail, the engine loses its oil pressure and
quickly seizes.
When additional sensing devices such as switches or sensors need to be installed that function on engine
oil pressure, these devices m.u.s1. be bulkhead-mounted and connected to the oil gallery using an appropriate
grade of lubricating oil hose. Any fittings used to connect the hose to the gallery must be of steel or malleable
iron composition. Brass must not be used for this application.
Raw Water Intake System
Make sure the intake system (raw water cooling system) is in proper order. Check that the hull inlet, sea
cock and strainer are unobstructed. Sea cocks and strainers should be at least one size greater than the
inlet thread of the raw water pump. The strainer should be of the type that may be withd rawn for cleaning
while the vessel is at sea and should be mounted below the water line to ensure self-priming. Inspect the
raw water lines to make sure there are no collapsed sections, which would restrict water flow. Make sure
there are no air leaks at any of the connections.
Cooling System
The generator's engine is fresh water-cooled by an engine-
mounted heat exchanger. Raw water is used as the heat
exchanger's cooling medium. Raw water is pumped into the
exchanger by a raw water pump and is then injected into the
exhaust for discharge, carrying with it the heat removed from
the engine's fresh water cooling system.
Raw water should be supplied to the raw water pump through
a flUSh-type through-hull fitting using a wire-reinforced hose
between the through-hull fitting to the gasdenser and to the
raw water pump. This raw water should be directed through a
visual-type raw water strainer for delivery to the raw water
pump. Hoses routed from the through-hull fitting to the raw
water system on the engine should be wire-reinforced to
prevent the hose from collapsing during the generator's opera-
tion (suction from the pump may collapse a non·reinforced
hose). Raw water strainers should be mounted at or below the
water line to make sure the strainer and line remain primed after
shutdown.
21
Raw water Pump
Belt tension
318-V2 inch
deflection at
Westerbeke Generators