34. Engine Block Clean and Inspect

Engine Block Cleaning and Inspection

^ Tools Required
- SA9178NE-A Dial Bore Gauge





1. Using the SA9178NE-A, measure the cylinder bore wear and taper.
1.1. Measure the bore both parallel and perpendicular to the crankshaft.
1.2. Measure the bore at the top, center and bottom of each cylinder. If the bore size or taper exceeds the service limit of 89.065 mm (3.5065 inch), the block must be bored and fitted with oversized pistons. Scored or scratched cylinder bores must be honed.
^ Cylinder bore diameter- new: 89.0 - 89.015 mm (3.5039 - 3.5045 inch)
^ Cylinder bore diameter- service limit: 89.065 mm (3.5065 inch)
^ Cylinder bore diameter - with 0.25 mm oversize pistons: 89.25 - 89.265 mm (3.5138 - 3.5144 inch)
^ Maximum reboring limit: 0.25 mm (0.01 inch)
^ Cylinder bore taper limit: 0.05 mm (0.002 inch) measured at the top and bottom of the cylinder bore





2. Using a straight edge and feeler gage, measure the top of the cylinder block for warpage.
^ Cylinder block deck surface flatness - new: 0.07 mm (0.003 inch) maximum
^ Cylinder block deck surface flatness - service limit: 0.1 mm (0.004 inch)
3. Inspect for the following conditions:
^ Gasket sealing surfaces for excessive scratches or gouging
^ Threaded bolt holes for damaged threads
^ Restrictions within the coolant or oil passages