There are 3 key partnerships that must be formed in order to make the Planning & Scheduling improvement efforts more effective. These partnerships are leveraged by good working relations and communication between Operations, Parts, and Maintenance. These three departments are the cornerstones of a successful planning and scheduling process.
One effective tactic to build better relationships and communication is to include your production partner in the weekly maintenance scheduling meetings. They can provide assistance in work prioritization and scheduling machine downtime so maintenance work can be performed.
Build relationships, ask for people's professional opinion, and communicate openly about what you want to achieve. If you make people feel valuable, more often than not, they will help offer more support than you asked for.