Hino S5-LJ05E04A, Руководство по ремонту

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