Toyota T100 1996, Service Manual, Page: 922 / 2062

P21448
Z14705
Mark
26 mm
1, 2 or 3 Front
Mark
(Cavity)
P21456
EM − 94
− ENGINE MECHANICAL (5VZ − FE) CYLINDER BLOCK
1996 TOYOTA T100 (RM449U)
(c) Using solvent and a brush, thoroughly clean the piston.
NOTICE:
Do not use a wire brush.
8. INSPECT PISTON OIL CLEARANCE
HINT:
There are 3 sizes of the standard piston diameter, marked ”1”,
”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” 93.356 − 93.366 mm (3.6754 − 3.6758 in.)
STD Mark ”2” 93.367 − 93.376 mm (3.6759 − 3.6762 in.)
STD Mark ”3” 93.377 − 93.386 mm (3.6763 − 3.6766 in.)
O/S 0.50 93.856 − 93.886 mm (3.6951 − 3.6963 in.)
(b) Measure the cylinder bore diameter in the thrust direc-
tions (See step 5.).
(c) Subtract the piston diameter measurement from the cylin-
der bore diameter measurement.
Standard oil clearance:
0.134
− 0.154 mm (0.0053 − 0.0060 in.)
Maximum oil clearance:
0.174 mm (0.0069 in.)
If the oil clearance is greater than maximum, replace all the 6
pistons. If necessary, rebore all the 6 cylinders or replace the
cylinder block.
HINT:
Use new cylinder block: Use a piston with the same number
mark as the standard bore diameter marked on the cylinder
block.
9. INSPECT PISTON RING GROOVE CLEARANCE
Using a feeler gauge, measure the clearance between new pis-
ton ring and the wall of the piston ring groove.
Standard ring groove clearance:
No.1 0.040 − 0.080 mm (0.0016 − 0.0031 in.)
No.2 0.030 − 0.070 mm (0.0012 − 0.0028 in.)
If the clearance not as specified, replace the piston.