FRAME 57

TM 9-2815-210-34-2-2

FRAME 57

NOTE

A l l seven upper main bearing halves (1 and 2) have an

a l i n e m e n t tab (3) off center as shown. All seven lower

m a i n bearing halves (4 and 5) have alinement tab (6)

i n center as shown.

N u m b e r four upper main bearing half (2) is called upper

m a i n thrust bearing half and was already put on.

I f main bearing halves (1, 2, 4, and 5) taken out of en-

g i n e were not thrown away, they must be used in this

t a s k . M a i n bearing halves and main bearing saddles

( 7 ) are called by numbers one to seven counting from

f r o n t to rear of crankcase (8). Used main bearing

halves are marked with a number in alinement tabs

( 3 and 6).

S p r e a d a thin coat of Prussian blue on surface of number one upper main

b e a r i n g half (1) which rests on number one main bearing saddle (7).

P u t number one upper main bearing half (1) on number one main bearing

s a d d l e ( 7 ) . Alinement tab (3) must fit in notch (9) in number one main

bearing saddle.

D o steps 1 and 2 again for all other upper main bearing halves (1).

GO TO FRAME 58

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