Good morning. Now is a good time to check your hydraulic hammer before it goes out to work. Check the upper and lower bushings for wear. Also check for seal leaks.
Thirdly check your tool inventory. It is not good to need a tool and not have one in inventory. The cost of down time is reduced this way. Also consider the type of tools you need for your projected work.
Finally review your grease for required specifications. The cheaper grease cost you in the long run with increased wear.