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CRANKSHAFT, MAIN BEARINGS, FLYWHEEL & CRANKCASE - CONT - TM-5-3820-256-24-5_263
CRANKSHAFT, MAIN BEARINGS, FLYWHEEL & CRANKCASE - CONT - TM-5-3820-256-24-5_265
TM-5-3820-256-24-5 Drilling System Well Rotary Truck Mounted Air Transportable 600 Feet Capacity Model LP-12 NSN 3820-01-246-4276 Manual
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SERVICE MANUAL
CRANKSHAFT, MAIN BEARINGS, FLYWHEEL &
CRANKCASE
Section 6
SPECIFICATIONS
DIMENSIONSVALUES
CRANKSHAFT:
Crankpin Diameter .............................................................................................................................
76
.
142
mm
(2
.
9977
in
.
)
76.175 mm
(2.9990 in.)
Main Journal Diameter .......................................................................................................................
85
.
705
mm
(3
.
3742
in
.
)
85.738 mm
(3.3755 in.)
Maximum Permissible Journal out-of-roundess,
before Reconditioning ..................................................................................................................0.0130 mm
(0.0013 in.)
Number of Main
Bearings
........................................................................................................................................................ 7
Main Bearing Running Clearance.........................................................................................................
0
.
046
mm
(0
.
0018
in
.
)
0.0130 mm
(0.0051 in.)
Maximum Permissible Main Bearing Clearance,
before Reconditioning ......................................................................................................................0.15 mm
(0.006 in.)
End Clearance........................................................................................................................................
0
.
15
mm
(0
.
006
in
.
)
0.30 mm
(0.012 in.)
Maximum End Play
before Reconditioning ......................................................................................................................0.51 mm
(0.020 in.)
main Bearing Bore in
Crankcase
,
Line Reamed ......................................................................................................................................
93
.
688
mm
(3
.
6885
in
.
)
93.713 mm
(3.6895 in.)
Thrust Bearing Location .................................................................................................................................................... Rear
FLYWHEEL
Large Bore Flange Run-out
(Total indicator reading) ...................................................................................................................0.20 mm
(0.008 in.)
Large Bore Concentricity with Crankshaft
(Total indicator reading) ...................................................................................................................0.20 mm
(0.008 in.)
CGES-185-3
PRINTED IN UNITED STATES OF AMERICA
Page 5
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