Maintainers, the replacement procedures for the M1A2 SEPv3 Abrams tank’s line replaceable modules (LRM) have been updated. These updates include the hull control unit (HCU), mission control unit (MCU) and turret control unit (TCU).
The updated procedures also include the requirement for LRM software data load and verification.
Maintainers performing LRM replacement tasks should utilize the updated procedures found HERE
These procedures supersede the tasks found in TM 9-2350-412-13&P (Apr 20). The TM will be updated later in 2022.