Westerbeke W-46 - Page 52

ENGINE ASSEMBlY
FUEL INJECnON PUMP
b. The front crankshaft pulley has timing marks embossed on its cir-
cumference from 0 • top dead center (TDC) to 40 • before top dead
center (BTD) in five-degree increments. Locate the 20" and 25"
marks and pl9ce a visible mark halfway between the two points to
represent .... :23;
c. Rotate the engine by hand to
position the number one piston
on its compression stroke.
Continue rotating the engine to
align the ···~· 23." mark on the
crankshaft .Pulley with the
timing pointer and stop.
d. On the side of the injection
pump body is an oval cover
plate, mounted to the pump body
by two screws that are wired
together. Cut the connecting
lock wire, remove the screws
and cover plate, including the
gasket.
(NOTE: Some fuel will be lost
from inside the pump when this
cover is removed. Be prepared
to catch it in a container.)
e. Inside the opening in the injection pump is a circlip and the
rotor body of the pump. The rotor body has a scribe mark on it
with the Letter ~ stamped above it. The scribe mark should
align with the top flat surface of the circlip. If the mark does
not align, loosen the injection pump securing nuts and gently
rotate the injection pump body up or down to align the scribe mark
with the circlip flat. The pump is now statically timed to the
engine. Secure the pump to its mounting flange, replace the pump
side cover and gasket and lock wire the side cover attaching
bolts.
(NOTE: Do not over-tighten the side cover attaching bolts.)
Reattach fuel supply and return lines to and from injection pump.
Connect high-pressure injector lines between the injection pump
and injectors. Do not cross or mix up these lines.
Engines & Generators
50