Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Echo 2000-2002 Approved techinfo.toyota.com ileaf 02toyrm 02toypdf 02rmsour 2002 02echorm em cylhea insp
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EM-32
ENGINE MECHANICAL - CYLINDER HEAD
EM16K-01
INSPECTION
1. CLEAN TOP SURFACES OF PISTONS AND CYL-
INDER BLOCK
(a) Turn the crankshaft, and bring each piston to top dead
center (TDC). Using a gasket scraper, remove all the car-
bon from the piston surface.
A01076
(b) Using a gasket scraper, remove all the gasket material
from the cylinder block surface.
(c) Using compressed air, blow carbon and oil from the bolt
holes.
CAUTION:
Protect your eyes when using high pressure compressed
air.
A01077
2. REMOVE GASKET MATERIAL
Using a gasket scraper, remove all the gasket material from the
cylinder block contact surface.
NOTICE:
Be careful not to scratch the cylinder block contact sur-
face.
A01068
3. CLEAN COMBUSTION CHAMBERS
Using a wire brush, remove all the carbon from the combustion
chambers.
NOTICE:
Be careful not to scratch the cylinder block contact sur-
face.
A01069
4. CLEAN CYLINDER HEAD
Using a soft brush and solvent, thoroughly clean the cylinder
head.
A01070
2002 ECHO (RM884U)
Author : Date : 646
EM-33
ENGINE MECHANICAL - CYLINDER HEAD
5. CLEAN VALVE GUIDE BUSHINGS
Using a valve guide bushing brush and solvent, clean all the
guide bushings.
A01479
6. INSPECT FOR FLATNESS
Using a precision straight edge and feeler gauge, measure the
surface contacting the cylinder block and the manifolds for war-
page.
Maximum warpage: 0.05 mm (0.0020 in.)
If warpage is greater than maximum, replace the cylinder head.
Cylinder Block Side
Intake Manifold Side
Exhaust Manifold Side
A01075
7. INSPECT FOR CRACKS
Using a dye penetrant, check the combustion chamber, intake
ports, exhaust ports and cylinder block surface for cracks.
If cracked, replace the cylinder head.
A01071
8. CLEAN VALVES
(a) Using a gasket scraper, chip off any carbon from the valve
head.
(b) Using a wire brush, thoroughly clean the valve.
EM0580
2002 ECHO (RM884U)
Author : Date : 647
EM-34
ENGINE MECHANICAL - CYLINDER HEAD
9. INSPECT VALVE STEMS AND GUIDE BUSHINGS
(a) Using a caliper gauge, measure the inside diameter of the
guide bushing.
Bushing inside diameter:
5.010 - 5.030 mm (0.19724 - 0.19803 in.)
A01478
(b) Using a micrometer, measure the diameter of the valve
stem.
Valve stem diameter:
Intake 4.970 - 4.985 mm (0.19567 - 0.19626 in.)
Exhaust 4.965 - 4.980 mm (0.19547 - 0.19606 in.)
(c) Subtract the valve stem diameter measurement from the
guide bushing inside diameter measurement.
Standard oil clearance:
Z00052 Intake 0.025 - 0.060 mm (0.00098 - 0.00236 in.)
Exhaust 0.030 - 0.065 mm (0.00118 - 0.00256 in.)
Maximum oil clearance:
Intake 0.08 mm (0.0031 in.)
Exhaust 0.10 mm (0.0039 in.)
If the clearance is greater than maximum, replace the valve and
guide bushing.
10. INSPECT VALVES
(a) Check the valve is ground to the correct valve face angle.
Valve face angle: 44.5◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo