SERVICE
DATA
I
STANDARDS
AND
LIMITS
•
~MCG
ENGINE/GENERATOR.
Component
Specified
Value
I
Standard
Repair
Limit
lnches(mm}
inches(mm)
PISTON
AND
CONNECTING
ROD
Piston
Pin
Press-in
temperature
..........................................
ordinal}'
temperature
Connecting
Rod
Center
length
...............................
4.0138
4.0178
(101.95
-102.05)
Parallelism
between
Big
End
and
Small
End
................................................
0.004
(0.05)
Connecting
Rod
Twist..
....................
0.004
(0.1)
Connecting
Rod
Big
End
to
Crankshaft
Side
Clearance
•..
~
..............................
0.0039-
0.0098
(0.10-
0.25)
..........
0.16
{0.4)
41
Component
Specified
Value
1
Standard
Repair
Limit
inches(mm)
inches(mm)
CRANKSHAFT,
BEARING
Crankshaft
End
Play
..........
0.0020
-
0.0098
{0.05
-
0.25}
.................
.
Crankshaft
Journal
O.D
...
1.5740
-1.5748
(39.98-
40.0)
Crankshaft
Pin
0.0
.••...•.•
1.4165
-1.4173
(35.98-
36.00)
Cylindericily
of
Journal
and
Pin
.....................................
Less
than
0.0002
(0.005)
Concentricity
of
Journal
and
Pin
.....................................
Less
than
0.0006
{0.015)
Oil
Clearance
of
Journal
................................
0.0008.
0.0018
{0.021-
0.045)
......
0.0039
(0.1)
Oil
Clearance
of
Pin
........
0.0009
•
0.0020
(0.022-
0.052)
Undersize
rework
dimension
of
Journal
0.25
u.s
..................
1.5644
-1.5650
(39.735-
39.750)
0.50
u.s
..................
1.5545
-1.5551
(39.485
•
39.500)
o.75
u.s
.................
1.5447
-1.54539
(39.235-
39.250)
Undersize
rework
of
dimension
Qf
pin
0.25
u.s
..................
1.4069
·1.4075
{35.735-
39.750)
0.50
u.s
..................
1.3970-
1.3976
(35.485
-
35.500)
0.75
u.s
..................
1.3872
-1.3878
(35.235.
35.250)
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