2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific blanking caps No specific blanking plugs No specific circuit breaker(s) safety clip(s) No specific container No specific tie-wrap No specific warning notice No specific access platform 6 m (19 ft. 8 in.)

 B. Referenced Information
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-42-00-861-001 Energize the Ground Service Network from the External
 Power 24-42-00-862-001 De-energize the Ground Service Network Supplied from
 the External Power 27-26-00-710-001 Operational Test of the Yaw Damper Actuation 29-10-00-864-001 Depressurize the Green Hydraulic System 29-10-00-864-002 Depressurize the Yellow Hydraulic System 29-10-00-864-003 Depressurize the Blue Hydraulic System 29-14-00-614-001 Depressurization of the Hydraulic Reservoirs 29-14-00-614-002 Pressurization of the Hydraulic Reservoirs through
 the Ground Connector 27-26-00-991-002 Fig. 401
 3. Job Set-up
__________
 Subtask 27-26-00-860-050
 A. Aircraft Maintenance Configuration
 (1)
 Energize the ground service network
 (Ref. TASK 24-42-00-861-001)

 (2)
 Make sure that hydraulic systems are depressurized (Ref. TASK 29-10-00-864-001) (Ref. TASK 29-10-00-864-002) (Ref. TASK 29-10-00-864-003).

 (3)
 Put the warning notice in the cockpit to tell persons not to operate the flight controls.

 Subtask 27-26-00-865-054
 B. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------FOR 3CC1
 49VU AUTO FLT/FAC1/28VDC 5CC1 B04 49VU AUTO FLT/FAC1/26VAC 14CC1 B03
 FOR 3CC2 121VU AUTO FLT/FAC2/28VDC 5CC2 M19 121VU AUTO FLT/FAC2/26VAC 14CC2 M18
 Subtask 27-26-00-010-054
 C. Get Access
 (1)
 Put the access platform in position below the access door 325BL ( 325BR).

 (2)
 Open the access door 325BL (325BL).

 4. Procedure
_________ Subtask 27-26-00-040-050
 A. Deactivation of the Yaw Damper Servo-Actuator 3CC1 (3CC2)
 (Ref. Fig. 401/TASK 27-26-00-991-002)

 (1)
 Make sure that there is no hydraulic leakage from the yaw damper servo-actuator (1). If there are leaks:

 (a)
 Depressurize the Green and Yellow hydraulic reservoirs (Ref. TASK 29-14-00-614-001).

 (b)
 Put a container below the hydraulic connections of the yaw damper servo-actuator (1).

 (c)
 Disconnect the hydraulic hoses (3) and (4) from the yaw damper servo-actuator (1).

 (d)
 Drain the remaining hydraulic fluid into the container.

 (e)
 Remove the container.

 (f)
 Put blanking plugs on the disconnected line ends.

 (g)
 Attach the hydraulic hoses (3) and (4) with a tie-wrap.

 (h)
 Pressurize the Green and Yellow hydraulic reservoirs (Ref. TASK 29-14-00-614-002).

 (2)
 Disconnect the electrical connectors (2) and (5) from the yaw damper servo-actuator (1).

 (3)
 Put blanking caps on the disconnected electrical connectors.

 Yaw Damper Servo-Actuator 3CC1 (3CC2)
 Figure 401/TASK 27-26-00-991-002
 1EFF :  ALL  1  27-26-00 Page 404 
1  1  Feb 01/98
 1  1
 1CES  1

 (4) Attach the electrical connectors (2) and (5) with a tie-wrap. Subtask 27-26-00-865-055
 B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
 -
FOR 3CC1
 5CC1, 14CC1

 -
FOR 3CC2
 5CC2, 14CC2

 Subtask 27-26-00-710-053
 C. Tests
 (1) Do the operational test of the yaw damper actuation (Ref. TASK 27-26-00-710-001).
 NOTE : The yaw damper servo-actuator 3CC1 (3CC2) you deactivated does
____
 not operate.

 5. Close-up
________ Subtask 27-26-00-941-053
 A. Safety Precautions
 (1)
 Remove the warning notice(s).
　
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