Clean Combustion Chamber; Clean Valve Guide Bushings; Clean Cylinder Head; Inspect Cylinder Head For Flatiness - Toyota 7M-GE Repair Manual

EM-46 ENGINE MECHANICAL -, Cylinder Head
L
3.
EM002I
4.
/
EM2932
EM293
EM293
EM293
5.
6.
CLEAN COMBUSTION CHAMBER
Using a wire.-brush, remove all the carbon from the com-
bustion chambers.
CAUTION: Be dareful not to scratch the head gasket
contact surface.
CLEAN VALVE GUIDE BUSHINGS
Using a valve guide brush and solvent, clean all the valve
guide bushings.
CLEAN CYLINDER HEAD
Using a soft brush and solvent, thoroughly clean the head.
INSPECT CYLINDER HEAD FOR FLATINESS
Using a precision straight edge and feeler gauge, measure
the surface contacting the cylinder block and manifold for
warpage.
Maximum warpage: 0.10 mm (0.0039 in.1
If warpage is greater than maximum, replace the cylinder
head.