Doosan 50001, Shop Manual

Page: 278 / 898

SP001693 Engine
Page 98
Crankshaft and Piston Specifications
Crankshaft
NOTE: Check appropriate parts catalog for various sizes of
replacement main bearing inserts.
Thrust Bearing
Piston
Inspection Item Standard Limit
Reference
Page
Bend (1/2 the dial gauge reading) -
0.0008 in.
(0.02 mm)
See
“Inspection of
Crankshaft” on
page -145
Connecting
Rod Journals
Journal Outside Diameter
2.2816 - 2.2820 in.
(57.952 - 57.962 mm)
2.2796 in.
(57.902 mm)
Bearing Inside Diameter
2.2835 - 2.2845 in.
(58.000 - 58.026 mm)
-
Bearing Insert Thickness
0.0587 - 0.0591 in.
(1.492 - 1.500 mm)
-
Oil Clearance
0.0015 - 0.0029 in.
(0.038 - 0.074 mm)
0.0059 in.
(0.150 mm)
Main Bearing
Journal
Journal Outside Diameter
2.5572 - 2.5576 in.
(64.952 - 64.962 mm)
2.5552 in.
(64.902 mm)
Bearing Inside Diameter
2.5590 - 2.5598 in.
(65.000 - 65.020 mm)
-
Bearing Insert Thickness
0.0785 - 0.0791 in.
(1.995 - 2.010 mm)
-
Oil Clearance
0.0015 - 0.0027 in.
(0.038 - 0.068 mm)
0.0059 in.
(0.150 mm)
Inspection Item Standard Limit Reference Page
Crankshaft End Play - All Models
0.0051 - 0.0091 in.
(0.13 - 0.23 mm)
0.0110 in.
(0.28 mm)
See “Removal of
Crankshaft” on
page -138
Inspection Item Standard Limit
Reference
Page
Piston Outside Diameter
(Measure at 90°ý to the Piston Pin.)
4TNV98
3.8555 - 3.8567 in.
(97.930 - 97.960 mm)
3.8541 in
(97.895 mm)
See
“Inspection of
Pistons, Piston
Rings and
Wrist Pin” on
page -142
Piston Diameter Measure Location
(Upward From the Bottom of the
Piston.)
4TNV98
0.8661 in.
(22 mm)
-
Piston Pin
Hole Inside Diameter
1.1811 - 1.1815 in
(30.000 - 30.009 mm)
1.1826 in.
(30.039 mm)
Pin Outside Diameter
1.1807 - 1.1811 in
(29.989 - 30.000 mm)
1.1795 in
(29.959 mm)
Oil Clearance
0.0000 - 0.0008 in.
(0.000 - 0.020 mm)
0.0031 in.
(0.080 mm)