Mitsubishi S4E - Page 61

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P osit io ll s f or mi k ing jou r nal
Uoit: mm On.1
Item Standa~d
Repair
ServIce
lim it
limit
Diam e-
75 -
0
.
030
-0 .050 -0.15 - 0.9
ler (-0, 0059) ( -0,035)
Crank·
-O , OOII~
(2.953_0 00197
oll,fl
Out·of· 0,01 (0.0004). 0.03
jour-
round
max ,
(0.0012)
na15
0.01 (0,0004). 0,03
Taper
max , (0 .0012)
(e) Journal unde"i ...
For the two undersize main bearings ava-Hable,
(he j ournals are to be ground to these sjze.s~
Unit: mm (in.)
Journal
Journals
to be ground to :
undersize
0.25 (0,0098)
-0030 -0,OOll8)
74,75 -0:050 (2,9429 -0,00197
0.50 (0 ,0 197)
-
0030 -.0.00118)
74.5 -0:050 (2 ,9331 -0.00197
(3) Cnnkpin inspection
Ca) Inspect each cnmkpill for surface n.w s such as
rou ghing, sc latches, pitting and bums, and. as
necessa ry, r epai r the crankpins by grin d ing to
the next un der sir..e or re place th e crank sh aft.
MAINTENANCE AND ADJUSTMENT
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L , " " -~ "",, .;
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Miking cran kshaft crankpins
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Pos itions for miking crankpin
(b) Mik e each craokpin 10 t ake. total of f our
readings to determine the w ear , out · of-round
and ta pe r. Lf an y of the limits is exceeded,
rep air by grinding to the next undersize or
r ep lace the crankshaft.
Un it: mm (in.)
Standard
Repair
Item
li mit
58
0,035
-0,05 5 0, 20
Diameter
--'>.001 38
(O, OO787)
(2.283_0.00217)
Crankpins
0 .01 (0, 00 04),
OUl · or ·round
max,
om (0.0004),
Taper
max .
(c) Craokpin undersiz e,
When grinding the crankpins 10 the next under ·
siz e, be su re to fUli sh each cJ2.D..k:pm to the
tolerance pre scri l:>ed ro r t he undersize , which is
0 ,2 5OUl1 (0,00984 in.) or 0.50mm (0 .01969 ill. ).
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