New Holland CX720 Repair Manual page 1738

Crankshaft - Overhaul (B.10.A.43 - F.10.A.40)
CX720, CX740, CX760, CX780, CX820, CX840
NOTE: Current production engines may have a crankshaft with main or crankpin journals ground 0.25 mm (0.010 in)
undersize. These are identified with the letters 010 MUS and/or 010 PUS respectively, letters being stamped on one
of the crankshaft counter balance weights.
1. Thoroughly clean bearings, journals, and caps, and
inspect for wear, scores, or damage replace as re-
quired.
NOTE: It is recommended that all the main bearings should
be replaced if it is found necessary to replace any one set
of main bearings.
2. If crankshaft timing gear teeth are worn or damaged it
will be necessary to replace the complete crankshaft
assembly.
3. Wash the crankshaft and drilled passages in a suit-
able solvent. Dress minor imperfections using an oil
stone but for severely marked journals machine to
the next undersize bearing size.
Measure diameter of each journal, Fig. 3, in four
places to determine out-of-round, taper, or wear.
Measuring, A, compared with B, indicates vertical ta-
per.
Measuring, C, compared with D, indicates horizontal
taper.
Measuring, A and B, compared with C and D, indi-
cates journal out-of-round.
If the journal exceeds specified limits refer to EN-
GINE - General specification (B.10.A - D.40.A.10)
and refinish journal to the next undersize bearing.
Examine the rear oil seal journal for score marks,
remove minor imperfections with fine emery cloth,
and if severely damaged renew the crankshaft.
POWER PRODUCTION - ENGINE
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