Figure 3-57. Installing idler gear hub.

TM 10-3930-242-34

Figure 3-56. Idler gear assembly, removal and installation.

Figure 3-57. Installing idler gear hub.

and consist of an upper shell seated in cylinder

block main bearing support and a lower shell

s e a t e d in main bearing cap. The bearings are

Figure 3-58. Installing idler gear.

numbered 1, 2, 3, etc., indicating their respective

position, and when removed must always be

der Mock. Lubricating oil, under pressure pas-

reinstalled in their original position, Lower

ses from the cylinder block by way of the bear-

m a i n bearing shells have no grooves; therefore

i n g shell to the drilled passages in the crank-

t h e upper and lower bearing shells must not bt

s h a f t then to the connecting rods. Rear main

interchanged. An oil hole in the groove of each

bearing thrust washers absorb the crankshaft

u p p e r shell midway between the parting liner

t h r u s t at each side of the rear main bearing.

registers with a vertical oil passage in the cylin-

E a c h washer is made of two halves; the lower