FRAME 18 - TM-9-2815-210-34-2-20055

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

FRAME 18

CAUTION

D o not use metal V-blocks to hold up crankshaft (1).

M e t a l V-blocks will scratch crankshaft:

NOTE

Crankshaft (1) has seven main bearing journals. They

a r e numbered one to seven counting from front to rear

o f crankshaft.

Set crankshaft (1) down on wooden V-blocks (2). V-blocks should hold up

e n d main bearing journals as shown.

H o l d dial indicator base (3) firmly on floor or workbench with weights.

R e s t dial indicator pointer (4) on number one main bearing journal (5). Set

d i a l indicator (6) to zero.

T u r n crankshaft (1) one full turn or more in either direction while watching

d i a l indicator dial (6). S t o p turning crankshaft when you are sure dial in-

d i c a t o r pointer (4) rests where biggest runout reading is seen.

S e t dial indicator dial (6) to zero again.

GO TO FRAME 19

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