Hino S5-LJ05E04A, Руководство по ремонту

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ENGINE MECHANICAL (J05E) 10–106
2. INSPECTING WEAR IN JOURNALS
(1) Use the micrometer to measure an outer diameter of a crankshaft
journal. If a measurement reading exceeds the permissible limit,
grind or replace the crankshaft.
! CAUTION
•
If the crankshaft is ground, use an undersize bearing.
•
If uneven wear is 0.1 mm {0.0039 in.} or larger, regrind for
correction. If wear is 0.2 mm {0.0079 in.} or larger, regrind. If
wear is 0.7 mm {0.0276 in.} or larger, replace the crankshaft.
NOTICE
When grinding the crankshaft, adjust a fillet radius dimension as
indicated below.
Journals: 2.5-3.0 mm {0.0984-0.1181 in.}
(2) Use the vernier calipers to measure a width of the crankshaft cen-
ter journal. If a measurement reading exceeds the permissible
limit, replace the crankshaft.
90
MEASUREMENT
(2 PLACES)
SHTS021270900249
Standard value (mm {in.})
Permissible limit
(mm {in.})
80.0 {3.150} 79.3 {3.122}
Bearing size Outside diameter of journal
Standard
79.94-79.96 mm
{3.1473-3.1480 in.}
0.25US
79.69-79.71 mm
{3.1375-3.1381 in.}
0.50US
79.44-79.46 mm
{3.1276-3.1283 in.}
IMPERFECT
CURVATURE
RADIUS
㧾
SMALL
CURVATURE
RADIUS
STEPPED
STEPPED
GOOD BAD
SHTS021270900250
SHTS021270900251
Standard value (mm {in.})
Permissible limit
(mm {in.})
36.0 {1.417} 37.0 {1.457}