Inspect Piston Oil Clearance - Toyota 22R-E Service Manual

ENGINE – ENGINE MECHANICAL
(c) Using solvent and a brush, thoroughly clean the
piston.
NOTICE: Do not use a wire brush.
2. INSPECT PISTON
A. Inspect piston oil clearance
HINT: There are three sizes of the standard piston
diameter, marked "2" and "3" accordingly. The
mark is stamped on the piston top.
(a) Using a micrometer, measure the piston diameter at
right angles to the piston pin center line, 26 mm (1.02
in.) from the piston head.
Piston diameter:
STD
Mark "1"
87.360 – 87.370 mm (3.4394 – 3.4398 in.)
Mark "2'
87.370 – 87.380 mm (3.4398 – 3.4402 in.)
Mark "3"
87.380 – 87.390 mm (3.4402 – 3.4405 in.)
0/S 0.50
87.860 – 87.890 mm (3.4590 – 3.4602 in.)
(b) Measure the cylinder bore diameter in the thrust di–
rections. (See step 4 on page EG2–107)
(c) Subtract the piston diameter measurement from the
cylinder bore diameter measurement.
Standard oil clearance:
0.130 – 0.150 mm (0.0051 – 0.0059 in.)
Maximum oil clearance:
0.17 mm (0.0067 in.)
If the oil clearance is greater than maximum, replace
all the six pistons. If necessary, rebore all the six
cylinders or replace the cylinder block.
EG2–109