Cylinder Block

CYLINDER BLOCK INSPECTION






1. REMOVE GASKET MATERIAL
Using a gasket scraper, remove all the gasket material from the top surfaces of the cylinder block.
2. CLEAN CYLINDER BLOCK
Using a soft brush and solvent, thoroughly clean the cylinder block.






3. INSPECT TOP SURFACES OF CYLINDER BLOCK FOR FLATNESS
Using precision straight edge and feeler gauge, measure the top surfaces of the cylinder block for warpage.
Maximum warpage:
0.05 mm (0.0020 in.)
If warpage is greater than maximum, replace the cylinder block.






4. INSPECT CYLINDER FOR VERTICAL SCRATCHES
Visually check the cylinder for vertical scratches. If deep scratches are present, rebore all the six cylinders or replace the cylinder block.






5. INSPECT CYLINDER BORE DIAMETER

HINT: There are three sizes of the standard cylinder bore diameter, marked "1", "2" and "3,, accordingly, The mark is stamped on the top of the cylinder block.






Using a cylinder gauge, measure the cylinder bore diameter at positions A, B and C in the thrust and axial directions.
Standard diameter:
STD
Mark "1" 87.500 - 87.510 mm (3.4449 - 3.4453 in.)
Mark "2" 87.510 - 87.520 mm (3.4453 - 3.4457 in.)
Mark "3" 87.520 - 87.530 mm (3.4457 - 3.4461 in.)
Maximum diameter:
STD: 87.73mm (3.4539 in.)
0/S: 0.50 88.23 mm (3.4736 in.)
If the diameter is greater than maximum, rebore all the six cylinders or replace the cylinder block.






6. REMOVE CYLINDER RIDGE
If the wear is less than 0.2 mm (0.008 in.), using a ridge reamer, grind the top of the cylinder.