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TM 10-3930-638-24&P
4-2. ENGINE MAINTENANCE (cont)
d. Crankshaft and Main Bearings.
c. Inspection
a. Removal
This task covers:
d. Installation
b. Cleaning
INITIAL SETUP
EQUIPMENT CONDITION
TOOLS
Paragraph
Condition Description
Gear and Bearing Heater
Oil pan removed.
Dial Indicator
Cylinder head assembly removed.
Plasti Gage
Micrometer, zero to five inches
Timing gear cover removed.
Universal Gear Puller
NSN 5120-00-3784293
Oil pump removed.
No. 1 Common Organiza-
Flywheel and flywheel housing removed.
tional Maintenance Tool Kit
Crankshaft oil seal retainer removed.
Bore Cage, zero to 5 inches
MATERIALS/PARTS
Asbestos gloves
Cleaning solvent P-D-680
Oil, No. 30
Clean cloths
ACTION
REMARKS
ITEM
LOCATION
STEP
REMOVAL
a. Eight connecting
Remove
1
Cylinder
rod nuts (1)
block
NOTE
Bearing liners are locked in groove of connecting rod bearing cap.
Remove with cap as an assembly.
Check, remove,
Check that cap (2) and connecting rods are
b. Four connecting
numbered as to location in block. Number
and set aside
rod bearing
cap and rod if necessary
caps (2)
c. 10 cap screws (3)
Remove
NOTE
Main bearing liners are locked in groove of main
bearing caps. Remove with cap as an assembly.
Check that main bearing caps are numbered for
location in cylinder block. If necessary, number,
d. Front main bearing
Remove and
cap (4)
set aside
e. Two intermediate
Remove and
main bearing caps (5) set aside
Change
1
4-25

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