R Yaw Damper - Servo Actuator 3CC1, 3CC2 Figure 401/TASK 27-26-51-991-001
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(4)
Put the warning notices in the flight compartment to tell persons not to operate the flight controls.
(5)
Depressurize the Green and the Yellow hydraulic systems and put them in the maintenance configuration (Ref. TASK 29-00-00-864-001).
(6)
Make sure that the Blue hydraulic system is depressurized and put it in the maintenance configuration. (Ref. TASK 29-00-00-864-001).
(7)
Depressurize the reservoir of the Green and the Yellow hydraulic system (Ref. TASK 29-14-00-614-001).
(8)
Put the warning notices in position to tell persons not to operate the Green, the Yellow and the Blue hydraulic systems:
-in the cockpit on the hydraulic section 40VU of the overhead panel,
- on the ground service panels of the Green, Yellow and Blue hydraulic systems.
(9) Put the rigging pin 98D27207516330, part of the RIGGING PIN SET (98D27207516000), or the PIN - RIGGING (98D27207549000) in the yaw damper bellcrank.
Subtask 27-26-51-865-050
R C. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AUTO FLT/FAC1/28VDC 5CC1 B04 49VU AUTO FLT/FAC1/26VAC 14CC1 B03 121VU AUTO FLT/FAC2/28VDC 5CC2 M19 121VU AUTO FLT/FAC2/26VAC 14CC2 M18
4. Procedure
_________
(Ref. Fig. 401/TASK 27-26-51-991-001)
Subtask 27-26-51-020-050
A. Removal of the Yaw Damper Servo Actuator 3CC1 and 3CC2
CAUTION : USE A SECOND WRENCH TO APPLY COUNTERTORQUE TO THE UNION WHEN
_______ YOU DISCONNECT/CONNECT HYDRAULIC LINES ON UNIONS. IF YOU USE THE SECOND WRENCH, YOU WILL NOT LOOSEN OR TIGHTEN THE UNION TOO MUCH.
NOTE : The procedure for the removal of the servo actuators 3CC1 (1) and
____
3CC2 (2) is the same.
(1) Disconnect the electrical connectors (12),(14) from the plugs on the actuator (1),(2).
NOTE : Do not disconnect the bonding straps (13) from the electrical
____ connectors (12),(14) unless a repair or a new installation is necessary.
(2)
Put the blanking caps on the electrical connectors (12).(14) and the plugs on the actuator (1),(2).
(3)
Disconnect the hydraulic system from the actuator (1),(2).
(4)
Put a drainage container in position below the connections of the
hydraulic pipes (16),(19) to the actuator (1),(2).
(5)
Disconnect the union nut (18) of the pipe (19) from the union (20) at the pressure port of the actuator (1),(2).
(6)
Disconnect the union nut (15) of the pipe (16) from the union (17) at the return port of the actuator (1),(2).
(7)
Drain the remaining hydraulic fluid into the drainage container.
(8)
Put the blanking caps on the unions (17),(20) of the actuator
(1),(2).
(9)
Put the blanking caps on the ends of the pipes (16),(19).
(10) Disconnect the actuator (1),(2) from the lever (11).
(a)
Remove and discard the cotter pin (10).
(b)
Remove the nut (9), the washer (8) and the bolt (3).
(c)
Move the connection of the actuator (1),(2) away from the lever (11).
(d)
Remove the sliding bush (4) from the flanged bush (6) in the lever (11).
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(11) Disconnect the actuator (1),(2) from the lever (5).
(a)
Support the actuator (1),(2).
(b)
Remove and discard the cotter pin (10).
(c)
Remove the nut (9), the washer (8) and the bolt (3).
(d)
Move the connection of the actuator (1),(2) away from the lever (5).
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