-
the high pressure supply to the RAT ejection jack stops,
-
the RAT returns to its fully extended position.
Before you do the retraction again, you must do the subsequent:
-press the warm up flow indicator in,
-align the index marks of the hub with the index marks on the leg so that the index is in the correct position,
-put the STOW/RESET switch to the RESET position to reset the interlock logic in the stow panel.
R 1EFF : 062-099, 106-149, 151-199, 204-299, 1 29-22-00Page 49 1301-399, 401-499, 1Config-1 Aug 01/05 1 1 1CES 1 **ON A/C ALL
7. Test
____
**ON A/C 001-049, 051-061, 101-105, 201-203,
A. RAT Functional Test
During the functional test, the remote units within the system effectively reverse the high and low pressure lines. Hydraulic pressure is supplied with hydraulic ground power to the hydraulic pump. The pump acts as a motor and drives the turbine.
R **ON A/C 062-099, 106-149, 151-199, 204-299, 301-399, 401-499,
A. RAT Functional Test
During the functional test you can test the mechanical governor and the hydraulic pump of the RAT on the ground. To do the test, a RAT ground test tool and a hydraulic ground-power supply are necessary.
**ON A/C ALL
B. Retraction Test
The RAT retraction test is operated through the RAT control panel which is installed in the Blue ground-service panel.
BLUE AUXILIARY HYDRAULIC POWER (RAM AIR TURBINE) - MAINTENANCE PRACTICES
________________________________________________________________________ R **ON A/C 001-049, 051-061, 101-105, 201-203,
TASK 29-22-00-869-001 Extension of the Ram Air Turbine (RAT) on the Ground WARNING : PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU
_______
START A TASK ON OR NEAR:
-
THE FLIGHT CONTROLS
-
THE FLIGHT CONTROL SURFACES
-
THE LANDING GEAR AND THE RELATED DOORS
-COMPONENTS THAT MOVE. WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES ARE
_______
CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.
WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______
GEAR.
1.
Reason for the Job
__________________
TO DEPLOY THE RAT FOR MAINTENANCE OR TEST PROCEDURE
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific warning notices
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 29-22-00-991-003 Fig. 201
3. Job Set-up
__________ Subtask 29-22-00-860-063
A. Aircraft Maintenance Configuration
(1)
Put the warning notices in position to tell persons to keep away from the range of movement of the RAT.
(2)
Make sure that the safety barriers are in position.
(3)
Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).
Subtask 29-22-00-865-053
B. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
106VU CSM/G /EV/MAN/SPLY 6XE B04
4. Procedure
_________ (Ref. Fig. 201/TASK 29-22-00-991-003) Subtask 29-22-00-860-062
A. Extension of the RAT on the Ground
WARNING : MAKE SURE THAT THE RAT TRAVEL RANGE IS CLEAR BEFORE YOU
_______
EXTEND/RETRACT THE RAT.
NOTE : Make sure that a second person examines the extension of the RAT.
____
NOTE : Do not operate the deployment solenoids of the RAT for more than
____ 60 seconds. You can operate them more than once. When the sum of the operation times (solenoid energized) is 60 seconds, you must let the solenoids cool for 30 minutes.
(1)
On the overhead panel 21VU, open the cover and push the MAN ON/AUTO switch in the section ELEC EMER PWR.
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