Checking The Cylinder Block; Clean The Cylinder Block; Measure The Cylinder Bore - Nanni T4.155 Workshop Manual

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CHECKING THE CYLINDER BLOCK

1. CLEAN THE CYLINDER BLOCK

A. Remove all signs of gasket
Use a scraper to remove all signs of sealant material, gasket, especially
on the cylinder block assembly surface
.
B. Clean the cylinder block
Carefully clean the cylinder block using a soft bristle brush and a solvent.
2. CHECK THE AMOUNT OF WARPING ON THE
CYLINDER BLOCK TOP SURFACE
Use a straight precision rule and a set of thickness shims to measure the
top contact surfaces of the cylinder block and check whether there is any
deformation.
Warping limit:
Replace the cylinder block when the amount of warping exceeds the
indicated limit.
3. CHECK WHETHER CYLINDERS ARE SCRATCHED
VERTICALLY
Visually examine the cylinders and check whether there are signs of
vertical scratches on the walls.
Replace the four cylinders if deep scratches are found. If necessary,
replace the cylinder block

4. MEASURE THE CYLINDER BORE

ADVICE: There are three nominal bore diameters,
respectively identified "1", "2" and "3".
The mark is stamped on the top surface of the cylinder block.
4 CYLINDERS WORKSHOP MANUAL
0.10 mm
171/191