1D-72 Engine Mechanical: For J20 Engine
Valve Lash (Clearance) Inspection
S5JB0A1424003
1) Remove negative cable at battery.
2) Remove cylinder head cover referring to “Cylinder
Head Cover Removal and Installation: For J20
Engine”.
3) Using 17 mm wrench, turn crankshaft pulley (1)
clockwise until index (2) of cylinder block and index
(3) of crankshaft pulley (1) are aligned.
4) Check whether cam position (1) of No.1 cylinder is at
the specified position [A] as shown in figure.
If cam position is [B], locate cam position to [A] by
turning crankshaft one rotation.
5) Check valve lashes with thickness gauge (4)
according to the following procedure.
a) Check valve lashes of cylinder No.1.
b) Turn crankshaft pulley by 180
°
clockwise.
c) Check valve lashes of cylinder No.3.
d) In the same manner as b) – c), check valve
lashes of cylinder No.4 then cylinder No.3.
If valve lash is out of specification, record valve lash and
adjust it to specification by replacing shim.
Valve clearance specification
[A]: TDC in compression for No.1 cylinder
[B]: TDC in exhaust for No.1 cylinder
[A]
[B]
1
1
I5JB0A142064-01
When cold (Coolant
temperature is 15 –
25
°
C (59 – 77
°
F))
When hot (Coolant
temperature is 60 –
68
°
C (140 – 154
°
F))
Intake
0.18 – 0.22 mm
(0.007 – 0.009 in.)
0.21 – 0.27 mm
(0.008 – 0.011 in.)
Exhaust
0.28 – 0.32 mm
(0.011 – 0.013 in.)
0.30 – 0.36 mm
(0.012 – 0.014 in.)
I5JB0A142065-01
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