Toyota 5R 1969 Repair Manual page 118

D E S C R I P T I O N
Th e lubricating system utilized on the 5 R , 3 R - B and 3 R - C engines is of an all
fo rce d -feed and full-flow filtering type insuring positive lubrication, and the lubri­
cating circuit is as shown in the above illustration.
T h e high p ressu re
and the oil is delivered into the oil hole within the cylinder after the oil is fully
filtered by the oil cleaner element.
Th e oil reaching the oil hole separates into three different w a y s ; engine front,
center and r e a r sections, and the oil flows separately into two w a ys again fo r
lubricating the crankshaft bearings and the camshaft b e a r in g s .
Th e oil reaching the crankshaft lubricates the crankshaft journals, and after lu­
bricating the crankshaft pins through the oil holes in the crankshaft, this oil flow
sprays onto the cylinder walls and the piston pins from the hole located at the
connecting rod bearing end. But on the connecting rod fo r the 3 R - B and 3 R - C , a
lubrication hole
the piston pin e n d .
A part of the oil which lubricated the camshaft N o . l bearing is d elivered to the
camshaft N o . 2 bearing. Th e rest of the oil travels through the oil hole in the cyl­
inder block and the cylinder head to the valve ro c k e r support
bricates the valve ro c k e r shaft, and then flow s out of the r o c k e r a rm s.
L U B R I C A T I N G S Y S T E M - Description
F i g . 6-1 5 R -E ngine Lubricating S ystem
oil discharged from the oil pump enters into the oil filter,
is provided inside the connecting rod from the bearing end to
6-1
Y6170
N o . l , which lu­