MNT.9:5 - Archetypal Grounding

In the extended constructed PS17 branch, the part return, protected access and permission are in place. The team performs the selected bearing intervention under the applicable equipment procedure.

The removed bearing is identified as R551 and the installed compatible bearing as R607. These are constructed serial-unit identifiers. The resulting installed configuration is identified as C42; it retains the same approved design basis while the actual bearing individual has changed. The maintenance record describes that change; it is not the physical configuration itself.

If unexpected housing damage is found, the original bearing task may no longer answer the condition. The team preserves the supported state and obtains the relevant revised diagnosis and work decision. It does not mark the original plan complete merely because the replacement bearing was available.

In the completed branch, the intervention record supplies the actual configuration and material observations to MNT.10. It does not yet claim restored district-heating service or removal of the unresolved long-horizon recurrence mechanism.