TIAH64D MPU-24
13
3
Operating Procedures
3.8 – Maintenance Check
Check the unit for dents, punctures, case distortion or misalignment, and cracked or loose connectors. Check
cables for cuts, chafing or evidence of crushing. Check connectors for cracks, cuts distortion, excessive
wear, broken or loose fasteners, and cables or strain relieves. If no external damage is evident, proceed to
next step. Otherwise contact Tesla™ for further instructions.
3.9 – Pre-Installation Procedures
Removing Original Battery
Follow the aircraft’s A-MWO1-1520-251-TESLA to remove and dispose of the original aircraft battery properly
and safely. Once the original battery has been removed from the battery compartment, proceed to the next
step.
Figure 3.9.1 - AH-64 Apache Longbow
(Battery compartment highlighted in blue)
Figure 3.9.2 - Battery Compartment
Check Unit Charge State
Before installing the TIAH64D MPU-24 into the aircraft, make sure the unit is fully charged. Remove the ac
line cord from the ac input connector and wait two minutes. Then, push the “Press for Capacity” button to
verify that the power cells are fully charged. Under a full charge the Capacity Meter will show a single green
LED. Additionally the “Charger Good” LED (see figure 3.9.3) should be illuminated. This will indicate that the
battery is charged and operational.
Figure 3.9.3 - “Charger Good” LED
NOTE
!
If the unit is not fully charged after 143 minutes, the power cells may need to be
replaced. Return the unit to Tesla™ Industries for evaluation and maintenance.
