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TM 9-2320-364-34-4
20-199
Materials/Parts
Cloth, Cleaning (Item 11, Appendix B)
Cloth, Crocus (Item 12, Appendix B)
Oil, Diesel, Fuel (Item 32, Appendix B)
Rags, Wiping (Item 47, Appendix B)
Pin, Dowel (Item 426, Appendix E)
Plug (Item 440, Appendix E)
This task covers:
a. Disassembly
b. Cleaning/Inspection
c. Assembly
INITIAL SETUP
Equipment Condition
Main bearing/crankshaft on clean work surface.
Tools and Special Tools
Tool Kit, General Mechanic’s
(Item 240, Appendix F)
Attachment, Ball, Micro
(Item 16, Appendix F)
Brush, Wire Scratch (Item 23, Appendix F)
Gloves, Chemical Oil, Protective
(Item 81, Appendix F)
Indicator, Dial, Set (Item 97, Appendix F)
Micrometer, Outside, Caliper, Set
(Item 139, Appendix F)
Block, V (2) (Appendix C)
20-63. MAIN BEARING AND CRANKSHAFT REPAIR.
a.
Disassembly.
(1)
Remove screw (1) and spacer (2) from
crankshaft (3).
NOTE
Perform Steps (2) through (5)
only if plugs, studs, pins, and
dowels are damaged.
(2)
Remove and discard four plugs (4) from
crankshaft (3).
(3)
Remove two studs (5) from second bearing
cap (6).
(4)
Remove studs (7) from front bearing cap (8).
(5)
Remove and discard four dowel pins (9)
from rear bearing cap (10).
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