Chevrolet 70 1969 Series, Shop Manual

Page: 302 / 913

6V-53 DIESEL ENGINE 6C-9
ROCKER ARM
-LUBRICATION
TO BLOWER
CAM ROLLER
LUBRICATION
T -4 9 6 7
Figure 10—Schematic Diagram of 6V-53 Engine Lubrication System
ENGINE LUBRICATION
(6V-53N)
The engine lubrication system for the 6V-53N
engine, schematically illustrated in figure 10, in­
cludes an oil intake screen and tube assembly, an
oil pump, an oil pressure regulator valve, a full-
flow oil filter with a by-pass valve, an oil cooler,
and an oil cooler by-pass valve.
The rotor-type oil pump is bolted to the back
of the engine lower front cover and is driven di­
rectly by the crankshaft. Inlet to the oil pump is
through a fixed-type inlet screen in the oil pan
sump.
Lubricating oil from the pump passes from the
lower front engine cover through short gallery
passages in the cylinder block. From the block, oil
flows to the full-flow filter, then through the oil
CHEVROLET SERIES 70 -80 H EAVY DUTY TRUCK SH O P M A N U A L