Inspect Valve Rocker Shaft Assembly - Toyota 3b Repair Manual

EM.42 ENGINE MECHANICAL
-
Cylinder Head
14.
INSPECT VALVE ROCKER SHAFT ASSEMBLY
(a)
Check
the stem cap contacting surface of
the
rocker
arm for wear.
lf the stem cap contact surface is worn, disassemble
and
replace the rocker arm.
(b)
Check
the
clearance between
the
rocker arms and
shaft by moving the rocker arms as shown. Little
or
no movement should
be
felt.
lf
movement is
felt,
disassemble and check
the oil
clear-
ance.
(c)
Disassemble the rocker shaft assembly.
HINT:
Arrange
the
rocker arms, spring and rocker sup-
ports in correct order.
(d)
Check
the oil clearance between the rocker arm
and
shaft.
o
Using
a
caliper gauge, measure the inside diameter
of
the rocker arm.
Rocker arm inside diameter:
18.512
-
18.533 mm (O.7288
-
0.7296
in.)
o
Using
a
micrometer, measure
the diameter of the
rocker shaft.
Rocker shaft diameter:
18.472
-
1
8.493 mm (0.7272
-
0.7281 in.l