AIS21 - IMRC Housing Assembly Bench Test-Actuator Check

^ Remove both IMRC housing assemblies from engine.

^ With IMRC housing assemblies on bench top, apply 40.8-68.0 kPa (12-20 in Hg) to the IMRC actuator inlet port.

^ Do both the actuators hold vacuum?

YES -- Go to AIS22. AIS22 - IMRC Housing Assembly Bench Test-Movement Check

NO -- Replace leaking IMRC actuator. Return to AIS21 to confirm IMRC housing assembly bench functional test.