In a certain mining company of South Africa the Maintenance Planners chose the following Maintenance Strategies against the failure modes experienced in a crusher.

Failure Modes	Maintenance Strategy
High pressure before filter	PM
Pipe chocked	Corrective
Flow Switch open	PM
Thermal Trip	DOM
Leaking Grease pipe	CBM
Low Pressure of oil before filter	PM
Oil Flow low	PM
Blocked Chute	Corrective
Lub Pump Tripped	Corrective
Low Bearing Temperature	PM
Communication not received	DOM
Bolts of Top Shell loose	Corrective
Motor Tripped	Corrective
Speed Switch Open	PM
Crusher Overload	Corrective
High Oil Temperature	PM

Would you agree with the selection of maintenance strategy? What is the critical piece of information the maintenance planners were missing?

Legend:
PM = Preventive Maintenance
Corrective = Repair or Restore
DOM = Design Out Maintenance
CBM = Condition Based Maintenance

Reference: https://www.researchgate.net/publication/263895618_A_Simplified_Numerical_Decision-Making_Methodology_For_Physical_Asset_Management_Decisions