Toyota 3S-GE Repair Manual page 156

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ENGINE —— ENGINE MECHANICAL

0, / _ g\ \ 0

Mark 1, 2 or 3

fe::r.$l ' " " s - Q

INSPECT PISTON

Inspect piston oil clearance

HINT: There are 3 sizes of the standard piston diame-

ter, marked "I', '2' and "3' accordingly. The mark is

stamped on the piston top.

Using a micrometer, measure the piston diameter at

right angles to the piston pin center line, 45.0 mm

(1.772 in.) from the piston head.

Piston diameter:

85.970 — 85.980 mm (3.3846 -— 3.3850 in.)

85.980 - 85.990 mm (3.3850 — 3.3854 in.)

85.990 - 86.000 mm (3.3854 — 3.3858 in.)

Measure the cylinder bore diameter in the thrust di-

rections. (See step 4 on page EG—139)

Subtract the piston diameter measurement from the

cylinder bore diameter measurement.

Standard oil clearance:

0.020 — 0.040 mm (0.0008 — 0.0016 in.)

Maximum oil clearance:

0.06 mm (0.0024 in.)

If the oil clearance is greater than maximum, replace

all the 4 pistons. If necessary, replace the cylinder

HINT (Use new cylinder block): Use a piston with the

same number mark as the cylinder bore diameter

marked on the cylinder block.

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