Technical Manual

38 D C U M a i n t e n a n c e a n d O p e r a t i o n M a n u a l
Repairs
Replacing a Solar Panel
Complete the following procedure to remove and replace solar panel. Refer to the
DCU Installation Instructions, Y20977-TUM for additional information.
1. Unlock and remove barrel lock.
2. Loosen two thumb screws and open the door.
3. Disconnect the power connector.
4. Cut any tie wraps on the power cord between the DCU and the solar panel.
The power cord should now dangle freely.
5. Remove the connection to ground from the old panel.
6. Remove the bolts, lock washers, and nut securing the solar panel to the
mounting brackets.
7. Remove the old solar panel.
8. If the new solar panel lacks a ground clamp, and the old ground clamp is in
good condition, it may be possible to scavenge the ground clamp from the
old panel and install it on the new one.
9. Install the new solar panel in place of the old.
10. Secure the new panel to its mounting bracket with the bolts, lock washers,
and nuts. Tighten to the torque cited in the DCU Installation Instructions,
Y20977-TUM.
11. Attach the ground wire to the solar panel.
12. Route new power cord to the DCU and secure the cord with tie wraps.
13. Some adjustment to the length of the power cord may be necessary.
14. Some adjustment to the mount heading and angle may be necessary if it was
bumped in the process of removing or installing the panels. Refer to the DCU
Installation Instructions, Y20977-TUM for specific details.
15. Test the panel output to ensure it is supplying a suitable voltage.
16. Connect the power connection and confirm that power is being supplied to
charge the battery.