Mitsubishi 4DQ5 Service Manual Page 33

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(l)
Crankpins
(a) Inspect each crankpin for surface flaws such
as
roughing, scratches, pitting and bums, and,
as
necessary, repair the crankpins by grinding
to
the next undersize
or
replace the crankshaft.
(b)
Mike
each crankpin
to
take a total
of
four
readings
to
determine the wear, out-of·round
and taper.
If
any
of
the limits is exceeded,
repair by grinding
to
the next undersize or
replace the crankshaft.
Specifications
Unit: mm (in.)
Item Standard
Repair
Service
limit
limit
Diameter
of
65-
0
.
015
-O.oJ5
-0.15
-0.9
journals
(2
559-0.00059
(-0.0059)
(-0.035)
. .-0.00138
Out
of
round·
ness
of
crank·
pins and journals
om
(0.0004),
0.03
max (0.0012)
Taper
of
crank·
pins and journals
Diameter
of
58-
0
.oJ5
-0.055
-0.20
crankpins
(228rO.00138)
. -0.00217
(-0.008)
0.2
0.03
-0.089
(0.0079)
Fit
of
journals
(0.0012 -
Uneven
in main bearings
0.00350)
wear:
0.03
(0.0012)
-29-
Miking crankshaft crankpins
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