What the most concern when checking a rotor-type oil pump?

When checking a rotor-type oil pump, the most significant concerns include assessing for wear or damage to the rotors and housing, ensuring proper clearances, and checking for any signs of leaks. Additionally, it's crucial to inspect the pump's performance under operating conditions, including flow rates and pressure, to ensure it meets specifications. Any unusual noise or vibration during operation can also indicate underlying issues that need to be addressed. Regular maintenance and monitoring are essential to prevent pump failure.