Assembly
4C20 Gasoline Engine Repair Manual
68
11. Checking the radial clearance
(b) Clean the combustion chamber
(b) Tighten the camshaft bearing cap bolts to the specified
torque.
(a) Install a plastic feeler gauge at the top of the camshaft
journal along the axis.
(1) Remove carbon deposits with a rotating plastic
(c) Remove the bearing cap.
13. Installing the cylinder head gasket
(a) Install the cylinder head gasket to the cylinder block. Make
sure that the guide pins are aligned with the corresponding
holes in the
(d) Measure the radial clearance with a feeler gauge.
brushes.
masonry.
(b) Install the pistons in the cylinder block so that they are not
at top dead center (approximately in the middle).
10. Checking the plane of the cylinder head
ÿ Nominal clearance: 0.040-0.074mm
(e) If the maximum allowable value is exceeded, the cylinder
head must be replaced.
(a) Using a straightedge and feeler gauges, check the flatness
of the lower and upper flange surfaces of the cylinder head
in six directions.
ÿ Bottom flange face: 0.050mm
(b) If the maximum value is exceeded, the cylinder head must
be replaced.
12. Installation of the check valve of the oil line of the cylinder
head
(a) Before installing, make sure the valve O-ring is installed
correctly. Install the valve with the O-ring side toward the
cylinder head. Installation in the opposite direction is
prohibited!
Measuring the
clearance with a plastic
feeler gauge
Machine Translated by Google
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