Inspect Cylinder For Vertical Scratches; Inspect Cylinder Bore Diameter; Remove Cylinder Ridge - Toyota 3VZ–FE Troubleshooting Manual

EG–108
ENGINE TROUBLESHOOTING
4.
5.
6.
– ENGINE MECHANICAL

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.

INSPECT CYLINDER BORE DIAMETER

HINT: There are three sizes of the standard cylinder bore di-
ameter, 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
87.73 mm (3.4539 in.)
O/S 0.50
88.23 mm (3.4736 in.)
If the diameter is greater than maximum, rebore all the six cyl-
inders or replace the cylinder block.

REMOVE CYLINDER RIDGE

If the wear is less than 0.2 mm (0.008 in.), using a ridge ream-
er, grind the top of the cylinder.