Installation of the Manual Drive Unit (MDU) Cap [PW11]
TASK 78-31-00-040-802-A
Installation of the Manual Drive Unit (MDU) Cap
1. Reason for the Job
CDL 78-21
Manual Drive Unit
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Referenced Information
3. Job Set-up
Subtask 78-31-00-010-070-A ** ON A/C NOT FOR ALL 4. Procedure
Subtask 78-31-00-000-053-A ** ON A/C NOT FOR ALL Subtask 78-31-00-400-050-A ** ON A/C NOT FOR ALL
Subtask 78-31-00-410-065-A ** ON A/C NOT FOR ALL Subtask 78-31-00-860-084-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 03:30:53 UTC
Installation of the Manual Drive Unit (MDU) Cap
1. Reason for the Job
CDL 78-21
Manual Drive Unit
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | Torque wrench: range to between 3.30 and 2.70 m.daN (24.34 and 19.91 lbf.ft ) ![]() | |
| CH144037 | 1 | TRANSPORTATION CAPS |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 71-13-00-010-802-A | Opening of the Fan Cowl Doors |
| TASK 71-13-00-410-802-A | Closing of the Fan Cowl Doors |
| TASK 78-31-05-000-801-A | Removal of the Manual Drive Unit (MDU) |
Subtask 78-31-00-010-070-A ** ON A/C NOT FOR ALL 4. Procedure
Subtask 78-31-00-000-053-A ** ON A/C NOT FOR ALL Subtask 78-31-00-400-050-A ** ON A/C NOT FOR ALL
B. Installation of the MDU Cap
(1) Install cap CH144037 TRANSPORTATION CAPS on the locking actuator MDU port.
(2) TORQUE the cap to between 3.30 and 2.70 m.daN (24.34 and 19.91 lbf.ft )
5. Close-up(1) Install cap CH144037 TRANSPORTATION CAPS on the locking actuator MDU port.
(2) TORQUE the cap to between 3.30 and 2.70 m.daN (24.34 and 19.91 lbf.ft )

Subtask 78-31-00-410-065-A ** ON A/C NOT FOR ALL Subtask 78-31-00-860-084-A ** ON A/C NOT FOR ALL
B. Aircraft Maintenance Configuration
(1) Make an entry in the logbook to record that the MDU Cap has been installed
(1) Make an entry in the logbook to record that the MDU Cap has been installed