TM 9-2320-363-34-2
2.
INSPECT CRANKSHAFT FOR EVIDENCE OF OVERHEATING AND REPLACE CRANKSHAFT IF EVIDENT.
3.
CHECK CRANKSHAFT JOURNAL SURFACES FOR SCORE MARKS OR IMPERFECTIONS. IF
EXCESSIVELY SCORED, REPLACE CRANKSHAFT.
NOTE
If crankshaft oil seal contact surfaces are grooved, seal surface must be sleeved
and oversized seal used.
4.
CHECK CRANKSHAFT THRUST SURFACES FOR EXCESSIVE WEAR OR GROOVING. IF
EXCESSIVELY WORN, REPLACE CRANKSHAFT.
5. CHECK CRANKSHAFT TIMING GEAR FOR WORN OR CHIPPED TEETH. INSPECT TIMING WHEEL
FOR BENT OR DAMAGED TEETH. REPLACE AS NECESSARY.
6.
SUPPORT CRANKSHAFT FRONT AND REAR JOURNALS ON V-BLOCKS OR INVERTED ENGINE
BLOCK WITH ONLY FRONT AND REAR UPPER BEARING SHELLS IN PLACE. CHECK
INTERMEDIATE MAIN JOURNALS WITH DIAL INDICATOR FOR RUNOUT WHEN CRANKSHAFT IS
ROTATED. REPLACE CRANKSHAFT IF RUNOUTIS GREATER THAN MAXIMUM SHOWN.
Journal
Journals
Maximum Runout:
Supported On
Measured
Total Indicator Reading
No. 1 and No. 7
No. 2
0.0030 in. (0.075 mm)
No. 1 and No. 7
No. 3
0.0051 in. (0.130 mm)
No. 1 and No. 7
No. 4
0.0060 In. (0.150 mm)
No. 1 and No. 7
No. 5
0.0051 in. (0.130 mm)
No. 1 and No. 7
No. 6
0.0030 in. (0.075 mm)
12-47
