Figure 11E-1. S c h e m a t i c Diagram of Lubrication System
er arm shafts through the rocker shaft
pins and for cooling the piston head is
brackets at the lower ends of the drilled
provided through the drilled crankshaft
bolts and lubricates the rocker arm and
from the adjacent forward main bearings.
push rod clevis bearings.
The gear train is lubricated by the over-
flow of oil from the camshaft pocket
Excess oil from the rocker arms lubri-
t h r o u g h a communicating passage into
cates the ends of the valve push rods,
the flywheel housing. Some oil spills in-
injector push rods and the cam followers,
to
the
flywheel
housing
from
the
and then drains to cam pockets in the
bearings of the camshaft, balance shaft
top of the cylinder block from which the
and idler gear.
cams are lubricated. When these pockets
are filled, the oil overflows through two
The blower drive gear bearing is lubri-
holes, o n e a t e a c h e n d o f t h e b l o w e r
cated through an external pipe from the
housing, as shown in Figure 11E-1 and
rear horizontal oil passage of the cylin-
Figure 11E-2 on page 11E-3, and thus
der block.
provides lubrication for the blower drive
gears at the rear end and for the gover-
A longitudinal oil gallery on the camshaft
nor mechanism at the front end. A dam
side of the cylinder head is supplied with
in the blower rear end plate cover main-
oil from one of the vertical bores located
tains an oil level in which the teeth of
Oil
at each end of the cylinder block.
the lower blower rotor timing gear run.
from this gallery enters the drilled rock-