(a) Make sure that:
-
the structure of the vertical stabilizer (1)
-
the structure of the rudder (2)
-
the paintwork
-
the bracket (4)
-
the rudder trim screwjack (5)
-
the universal joint (6)
-
the bonding straps (9),(15)
-
the electrical connectors (14)
are clean, show no corrosion and are not damaged.
(2)
Do a visual inspection of the bolts (11),(12) and make sure that they are clean and show no damage.
(3)
Do a visual check of the replacement rudder trim actuator (10CC) (3).
(a) Make sure that:
-
the rudder trim actuator (10CC) (3) is serviceable
-
the color of the dessicant patch has not changed because of high humidity
-
the locking pin (19) is installed.
NOTE : For the rudder trim actuator with the part number 6137-3
____ use the locking pin (19) with the part number 6137-013.For R the rudder trim actuator with the part number 6137-4 or
R R 6137-5 use the locking pin (19) with the part number 6137-060.
- the interface of the flange (8) is clean.
(4) Make sure that the mobile red index is in the zero position on the position indicator of the rudder trim actuator.
(a) If the mobile red index is not in the zero position:
1_ Remove the locking pin (19) from the rudder trim actuator.
2_ Turn the shaft of the rudder trim actuator in one direction until it touches its internal mechanical stop.
3_ Turn the shaft back 6 full turns.
4_ Make sure that the mobile red index moves to the zero position.
5_ Install the locking pin (19) in the rudder trim actuator.
R R (5) Apply the COMMON GREASE (Material No. 04-004) to the threads of the bolts (11),(12).
R R (6) Apply the COMMON GREASE (Material No. 04-004) to the splined shaft (7).
R R (7) Apply the SPECIAL MATERIALS (Material No. 05-002) to the shaft of the bolts (11),(12).
R R (8) Apply a thin layer of the SPECIAL MATERIALS (Material No. 05-002) to the: - interface of the flange (8) - interface of the bracket (4).
(9) Make sure that the bonding area on the interface of the flange (8) and the interface of the bracket (4) are clean.
Subtask 27-22-51-420-050
B. Installation of the Rudder Trim Actuator 10CC
R R NOTE : The subsequent worksteps are necessary if you install a rudder____ trim actuator with the part number 6137-3. If you install a rudder trim actuator with the part number 6137-4 or 6137-5, refer to the next subtask.
(1)
Put the rudder trim actuator (3) in position at the bracket (4).
(2)
Engage the splined shaft (7) with the universal joint (6).
(3)
Put the bonding strap (9) in position at the flange (8).
(4)
Install the bolt (11) and the washer (10) at the connection of the bonding strap (9), the flange (8) and the bracket (4) (Ref. TASK 20-28-00-912-004).
(5)
Install the bolts (12) and the washers (10) at the connection of the flange (8) and the bracket (4).
(6)
Tighten the bolts (11),(12).
(7)
Safety the bolts (11),(12) with the lockwire MISCELLANEOUS (Material No. 19-010).
(8)
Remove the blanking caps from the plugs (13) and the electrical connectors (14).
(9)
Connect the electrical connectors (14) to the plugs (13) on the rudder trim actuator (3).
Subtask 27-22-51-420-052
C. Installation of the Rudder Trim Actuator 10CC NOTE : The subsequent worksteps are necessary if you install a rudder
____ R trim actuator with the part number 6137-4 or 6137-5.
(1) Install the rudder trim actuator (3):
(a)
Carefully move the lower part of the rudder control frame (32) rearward.
(b)
Install the rudder trim actuator (3) from the right side.
(c)
Put the rudder trim actuator (3) in position at the bracket (4).
(d)
Engage the splined shaft (7) with the universal joint (6).
(e)
Put the bonding strap (9) in position at the flange (8).
