!
INTAKE AND EXHAUST VALVES
(SEE
TABLE OF CLEARANCES)
NOTE-USEASTANDARO
AUTOMOTIVE
TYPE
YIREN CH
TO
A DJU ST
THE TAPPETS.
NOTE
-
SEE
VALVE
TAPPET
CLEARANCES
IN T EXl
$o.u.
^oroto*
VALVE
AOJ
USTING
scR Elf
VALVE SP
VALVE
GUIOE-V
VALVE
SPRING
WASHEN
LOCK
/
o-RrNG
(INTAKE
VAL
VE
|
|
oNLy)
ALVE ROTATOR
FIGURE
I2.
TAPPET AOJ USTM EN
T
OIL
PRESSURE
RELIEF VALYE ADJUSTMENT
Engine oil
pressule
is adjusted by
meals of the slotted
stud
and locknut located near the breather
tube. See
Figure
13.
Oil
pressure
readings,
when the engine is
thoroughly
warmed up, should be
between
30
and
35
lbs. To increase
oil
pressure,
loosen the locknut and
turn the stud
inward. To decrease oil
pressure,
loosen
the
locknut
and tutn
the stud
outward.
Be sure to
tighten the locknut securely after
making an adjust-
ment. The
spring
and
plunger
can
be removed
and
clearled,
NOTE: Planrs be{ianin! wilfi
Spec
D
have
a Iixed
oil
pressure
reliel valve.
No
adjustnent
is necessary.
Low
oil
pressufe
may indicate worn
main or
connecting
rod bearings, improper cleatance at
these
points,
a
weak
or
broken bypass spring,
an impropetly adjusted
bypass
or
a defective gauge.
Check the oil pressuie
gauge before
making
any
other test; it may be defective.
REFER
TO
INSTRUCTIONS
FOR PROPER
SETTING OF
THE
OIL
PRESSURE
RELIEF
VALVE ADJUSTMENT SCREW
FIGURE
I3.
OIL
PRESSURE
RELIEF VALVE ADIUSTMENT
2t.