Westerbeke BCG4.0KW Operator's Manual page 30

Oil Drain Hose
An oil sump drain hose is installed on the engine with the discharge end secured by a bracket at the front 01
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, for easier removal of the old oil, if desired.
Connecting Pressure Sensing lJevices to Oil Galleries
Oil pressure sensing devices, such as senders and switches, must not be connected to an engine's oil gal-
lery 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 must 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 malle-
able iron composition. Brass must not be used for this application.
Sea Water Intake System
Make sure the intake system (sea 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 sea water pump. The strainer should be of the type that may be withdrawn for cleaning
while the vessel is at sea and should be mounted below the water line to ensure self-priming. Inspect the
sea 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. Sea water is used as the heat
exchange's cooling medium. Sea water is pumped into
the exchanger by a sea water pump and is then injected
into the exhaust discharge, carrying with it the heat
removed from the engine's fresh water cooling system.
Sea water should be supplied to the sea water pump
through a flush-type through-hull fitting using a wire-rein-
forced hose between the through-hull fitting and the sea
water pump. This sea water should be directed through a
visual-type sea water strainer and then delivered to the
pump. Hoses routed from the through-hull fitting to the
strainer and to the sea water pump should be wire-rein-
forced to prevent the hose from collapsing during the gen-
erator's operation (suction from the pump may collapse a
non-reinforced hose). Sea water strainers should be
mounted at or below the water line to make sure the sea
water line remains primed.
27
BElT TENSION
3/8-112 INCH
DEFLECTION AT
LONGEST SPAN
Weslerbeke Generators