B. Power Transmission
 The outputs of the PCU hydraulic motor move the differential gearbox. The differential gearbox decreases the speed of rotation and connects the two drives into a single output. A torque shaft transmits power from the differential gearbox to the 19 degree bevel gearbox. A second torque shaft continues the drive to the input gear of the T-gearbox. In the T-gearbox the direction in which the drive is aligned is changed through 90 degrees. The change of direction is by a single transverse output shaft moved through 1:1 bevel gearing by the gearbox input.
 Downstream of the T-gearbox, the operation of the transmission system is the same for each wing. Only one wing system is specified. Torque shafts from the T-gearbox transmit the drive to the lower of two
 63.5 degree bevel gearboxes. The 63.5 degree bevel gearboxes are installed at the wing root between RIB 1 and the fuselage. A single torque shaft connects the two 63.5 degree gearboxes.
 The 63.5 degree gearboxes transmit the movement from below the center wing box into the wing leading edge. The movement is transmitted without a decrease in speed. From the upper 63.5 degree gearbox more torque shafts continue the movement through the ten rotary actuators. The movement stops at the APPU (Ref. 27-81-00) in the wing tip.
 When the torque shaft turns, it moves all the gearboxes and the input shafts of the rotary actuators. The movement at the gearboxes and rotary actuators occurs at the same time and at the same speed. The rotary actuators give the necessary torque and speed decrease to move the slats at the specified rate.
 8. Bite____
 Not Applicable SLATS HYDRAULIC ACTUATION AND POWER TRANSMISSION - ADJUSTMENT/TEST

__________________________________________________________________
 TASK 27-84-00-710-001
 Operational Test of the Slat System
 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 GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______
 GEAR.

R
 1.
 Reason for the Job

__________________
 Self Explanatory

 2.
 Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
 -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s)
 No specific safety barriers
 No specific warning notice(s)

 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied from the External Power 29-10-00-863-003 Pressurize the Blue Hydraulic System with a Ground
 Power Supply 29-10-00-864-003 Depressurize the Blue Hydraulic System 31-60-00-860-001 EIS Start Procedure
 3. Job Set-Up
__________ Subtask 27-84-00-941-050
 A. Safety Precautions
 (1)
 Put the safety barriers in position.

 (2)
 Put the warning notice(s) in position to tell persons that the slat system is in operation.

 Subtask 27-84-00-860-052
 B. Aircraft Maintenance Configuration
 WARNING : OBEY THE HYDRAULIC SAFETY PROCEDURES.

_______
 (1)
 Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).

 (2)
 Pressurize the Blue hydraulic system
 (Ref. TASK 29-10-00-863-003).

 NOTE : The Blue and/or Green hydraulic system(s) operate(s) the slat
____ system. If necessary, use the alternative hydraulic system.
 NOTE : If you use the Blue Hydraulic System, an ECAM S/CTL SLAT SYS 2
____ FAULT message will show. This message can be ignored.
 NOTE : If you use the Green Hydraulic System, an ECAM S/CTL SLAT SYS
____ 1 FAULT message will show. This message can be ignored.
 1EFF : ALL 1 27-84-00Page 502 1 1 Aug 01/05R 1 1 1CES 1

 Subtask 27-84-00-865-050
 C. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1 6CV B07 49VU AUTO FLT/FAC1/26VAC 14CC1 B03 121VU AUTO FLT/FAC2/26VAC 14CC2 M18 121VU FLIGHT CONTROLS/FLP/CTL AND/MONG/SYS2 8CV Q21
　
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