Cause:

• Deterioration in the reducer oil seal.
• Too much grease was applied.
• A grease other than the specified grease was applied.
• Excess grease left on the unit when grease was applied.
• Foreign materials have stuck to the oil seal(dust, etc.).

Measures:

• Check the amount of grease that should be applied and the name and product number of the grease.
• Take measures to make sure that dust, etc. does not adhere to joints.
• After applying grease wipe off any grease that is protruding.