Hino S5-LJ05E04A Workshop Manual page 366

10–90
MEASURE
DIRECTION
SICKNESS GAUGE
ENGINE MECHANICAL (J05E)
INSPECTING THE COMPONENTS
1.
(1)
SHTS021270900206
(2)
! CAUTION
PIN DIRECTION
Measurement position is 17 mm {0.669 in.} above the lower end of
the piston in axial direction to the pin hole.
17mm {0.669 in. }
(3)
SHTS021270900207
2.
(1)
SHTS021270900208
3.
(1)
SHTS021270900209
INSPECTING THE PISTON CLEARANCE
Use the cylinder gauge to measure the inner diameter of the slid-
ing surface of cylinder liner.
Standard value (mm {in.})
112 {4.409}
Use the micrometer to measure the outer diameter of the piston.
Standard value (mm {in.})
Calculate the difference between the cylinder liner inner diameter
and the piston outer diameter. If a measurement reading exceeds
the standard value, replace the cylinder liner and piston.
Standard value (mm {in.})
INSPECTING THE PISTON RING
Use the micrometer to measure the thickness of the piston ring. If
a measurement reading exceeds the permissible limit, replace the
piston ring.
Measured item
Top ring
Second ring
Oil ring
INSPECTING THE PISTON RING GROOVE
Use the thickness gauge to measure the piston ring groove. If a
measurement reading exceeds the permissible limit, replace the
piston.
Measured item
Top ring groove
Second ring
groove
Oil ring groove
Permissible limit
(mm {in.})
112.15 {4.415}
111.927-111.943
{4.406-4.407}
0.053-0.077
{0.0021-0.0030}
Standard value Permissible limit
(mm {in.}) (mm {in.})
2.999 {0.1181} 2.899 {0.1141}
2.0 {0.0787} 1.9 {0.00748}
4.0 {0.1575} 3.9 {0.1535}
Standard value Permissible limit
(mm {in.}) (mm {in.})
Taper
2.0 {0.0787} 2.2 {0.0866}
4.0 {0.1575} 4.1 {0.1614}
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