EM/Engine Mechanical — Inspection of Cylinder Block, page 74

EM 74			ENGINE MECHANICAL — Cylinder Block

INSPECTION OF CYLINDER BLOCK

1.	REMOVE GASKET MATERIAL
Using a gasket scraper, remove all the gasket material from
the cylinder block surface.

2.	CLEAN CYLINDER BLOCK
Using a soft brush and solvent, clean the block.

3.	INSPECT TOP OF CYLINDER BLOCK FOR FLATNESS
Using a precision straight edge and thickness gauge, meas-
ure the surfaces contacting the cylinder head gasket for
warpage.
Maximum warpage: 0.05 mm (0.0020 in.)
If warpage is greater than maximum, replace the cylinder
block.

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

5.	INSPECT CYLINDER BORE DIAMETER
Using a cylinder gauge, measure the cylinder bore diameter
at positions A, B and C in the thrust and axial directions.

Front ←— ⊕ O Thrust
		  Direction
		  O Axial
		    Direction

A ——|— 10 mm
	(0.39 in.)
B ——|— Middle
C ——|— 10 mm
	(0.39 in.)