New Holland CX720 Repair Manual page 1708

7. Tighten bolt to press seal into end cover.
IMPORTANT: Only tighten the bolt sufficiently to ensure
face of tool touches face of end cover.
8. Install shield (1) onto the seal.
9. Clean and refit the wear sleeve (1) over crankshaft
and into the seal. Use the seal installer to push the
wear sleeve into the centre of the seal.
NOTE: Only fit a new sleeve if the outer surface is worn or
damaged.
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