Oil Pressure Check - Toyota 3b Repair Manual

-
LUBRICATION SYSTEM
-
Troubleshooti
TROUBLESHOOTING
Problem
Possible cause
Remedy
Page
Oil
leakage
Cylinder head,
cylinder
block or oil
pump
body
damaged or cracked
Oil
sealfaultY
Gasket
faulty
Repair as necessary
Replace
Oil
seal
Replace
gasket
EM-60 or
EM-91
Low
oil
pressure Oil leakage
Relief valve
faulty
Oil
pump faulty
Engine
oil
poor qualitY
Crankshaft bearing faultY
Connecting rod bearing faultY
Oilfilter
clogged
Repair as necessary
Repair
relief valve
Repair
oil
pump
Replace
engine oil
Replace
bearing
Replace
bearing
Replace
oil
filter
LU-7
LU-7
LU-5
EM-71
EM-69
LU-5
High
oil
pressure
Relief valve
faulty
Repair
relief valve
LU-7
ffiRr41621
38
"; to
o 20
40 60
80
1oo
TEMPERATUFE
RANGE ANTICIPATED BEFORE
NEXT OIL CHANGE
OIL PRESSURE CHECK
1.
CHECK ENGINE OIL
OUALIW
Check
the oil for
deterioration, entry of water, discoloring
or thinning.
lf the quality is poor, replace the oil.
UseAPlgradecc,cDorbetterandrecommendedviscosity
oil.
2.
CHECK ENGINE OIL LEVEL
The oil level should be between the
"L"
and
"F"
marks on
the
level
gauge.
lf low,
check
for leakage and add
oil
up
to the
"F"
mark'
REMOVE OIL PRESSURE SWITCH OR SCREW PLUG
INSTALL OIL PRESSURE GAUGE
START ENGINE
Start the engine and warm
it
up
to
normal
operating
temperature.
CHECK OIL PRESSURE
Oil
pressure:
At
idle
At
3,OOO
rpm
HINT:
Check
for oil leakage after reinstalling the
pressure
switch or screw plug.
3.
4.
5.
O.3 kg./cm2
14.3
psi, 29 kPa)
or more
2.5
-
6.O kg,/cm2
(36
-
85 psi, 245
-
588
kPal
EM1759
6.