TM 55-2815-574-24
0061
REPAIR
1.
Remove woodruff keys (Figure 5, Item 1) from crankshaft (Figure 5, Item 3).
2.
Install new woodruff keys (Figure 5, Item 1) into crankshaft (Figure 5, Item 3).
3.
Remove plugs (Figure 5, Item 2) from the crankshaft (Figure 5, Item 3).
4.
Install new plugs (Figure 5, Item 2) into the crankshaft (Figure 5, Item 3).
5.
Use a torque wrench and screwdriver attachment to torque plug (Figure 5, Item 2) to 120 to 144 in-lb
(13.5 to 16.3 Nm).
Figure 5. Crankshaft Woodruff Key and Plugs.
END OF TASK
INSTALLATION
1.
Slide oil pump drive gear (Figure 6, Item 12) onto crankshaft (Figure 6, Item 7).
CAUTION
The upper and lower bearings are different. The upper bearing (engine block side) has a
slot or groove for the oil distribution. The lower bearing (main cap side) is plain with no slot.
Failure to comply may result in serious damage to engine.
2.
Install the main bearings and caps.
a.
Install upper bearings (Figure 6, Item 8) in main bearing surface (Figure 6, Item 10) with the tangs on
the bearings aligned with the slots in the engine block.
b.
Apply a light coat of engine oil to the crankshaft upper bearing surfaces (Figure 6, Item 8).
c.
Install the crankshaft (Figure 6, Item 7) into the engine block (Figure 6, Item 11) and the upper
bearings (Figure 6, Item 8).
NOTE
The grooved side of the thrust washers must face toward the crankshaft surface.
d.
Install the upper halves of the thrust washers (Figure 6, Item 9) on each side of the rear upper bearing
(Figure 6, Item 8).