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TM 5-4210-220-34
3-8.
ENGINE - Continued
3-8.10
Crankshaft.
This task covers:
a.
Removal
b.
Inspection
c.
Installation
f.
Installation
TOOLS
Flywheel Housing Removed (see para. 3-8.6)
Shop Equipment, Automotive
Oil Pump Removed (see para. 2-19.10)
Maintenance and Repair,
Rocker Covers Removed (see para. 2-19.3)
NSN 4910-00-754-0650
Exhaust Manifolds Removed (see para. 2-19.1)
J21983 Sleeve Installer
Cylinder Heads Removed (see para. 2-19.8)
J8092 Driver Handle
Pistons and Liners Removed (see para. 3-8.9)
J25002 Guide Studs
MATERIALS/PARTS
EQUIPMENT CONDITION
4, Appendix B Antiseize Compound
Engine Removed from Truck (see para. 3-8.1)
10, Appendix B Dry Cleaning Solvent
Oil Pan Removed (see para. 2-19.11)
17, Appendix B Engine Oil
51996616 Gasket Kit
PERSONNEL REQUIRED - 2
WARNING
Serious injury could occur if heavy equipment is moved/lifted without sufficient personnel to do the job.
Use proper physical lifting procedures or use a suitable lifting device or dolly. Wear safety shoes, gloves
and other suitable protective clothing.
NOTE
The equipment conditions above are the minimum required to remove the crankshaft in order to replace
bearings or the crankshaft itself. In general, if bearings or crankshaft require replacement, the engine
should be stripped to check the cause of bearing failure and to ensure no other components are subject to
failure.
REMOVAL
(1) Remove the crankshaft stabilizer bolts (1) and washers (2) that retain the stabilizers (3) to the cylinder block
(17).
(2) Starting on the outermost bearing caps and working alternately front and back, loosen main bearing cap bolts
(6).
(3) Lift off each bearing cap (18) and be sure they are marked with same number that is inscribed on the block
adjacent to that cap position.
(4) Remove the thrust washers (4) from each side of the rear main bearing cap.
(5) Attach a suitable sling to the crankshaft (10) and lift from block (17).
(6) If not removed, pull off oil pump drive gear (8) and key (9) from crankshaft (10). The rear oil seal (14) was
removed with the flywheel housing The gear (8) and oil seal (7) were removed with the oil pump.
3-174
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