RAV4 2-Door 4WD L4-2.0L (3S-FE) (1997)
(a)
Using a micrometer, measure the piston diameter at right angles to the piston pin center line, 26 mm (1.02 inch) from the piston head.
Piston diameter:
STD:
Mark "1": 85.870 - 85.880 mm (3.3807 - 3.3811 inch)
Mark "2": 85.880 - 85.890 mm (3.3811 - 3.3815 inch)
Mark "3": 85.890 - 85.900 mm (3.3815 - 3.3819 inch)
O/S 0.50: 86.370 - 86.400 mm (3.4004 - 3.4016 inch)
(b) Measure the cylinder bore diameter in the thrust directions. See: Testing and Inspection
(c)
Subtract the piston diameter measurement from the cylinder bore diameter measurement.
Standard oil clearance: 0.12 - 0.14 mm (0.0047 - 0.0055 inch)
Maximum oil clearance: 0.16 mm (0.0063 inch)
If the oil clearance is greater than maximum, replace all 4 pistons and rebore all the 4 cylinders. If necessary, replace the cylinder block.
NOTE: (Use new cylinder block): Use a piston with the same number mark as the cylinder bore diameter marked on the cylinder block.
B. Inspect piston ring groove clearance.
Using a feeler gauge, measure the clearance between new piston ring and the wall of the ring groove.
Ring groove clearance: 0.030 - 0.070 mm (0.0012 - 0.0028 inch)