(2)
Put a warning notice in the cockpit to tell persons not to start the APU.
(3)
Put a warning notice in the cockpit to tell persons not to operate the THS.
R Trimmable Horizontal Stabilizer (THS) Actuator. Figure 301/TASK 12-22-27-991-003
1EFF : 1 1 1CES ALL 1 111 12-22-27 Page 303 Nov 01/02
Subtask 12-22-27-865-054
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU FLIGHT CONTROLS/THS/ACTR/MOT2 19CE2 B09 121VU FLIGHT CONTROLS/THS ACTR/MOT3 19CE3 Q17 121VU FLIGHT CONTROLS/THS ACTR/MOT1 19CE1 Q16
Subtask 12-22-27-010-053
C. Get Access
(1)
Put the access platform below the access door 312AR.
(2)
Open the access door 312AR.
4. Procedure
_________ (Ref. Fig. 301/TASK 12-22-27-991-003) Subtask 12-22-27-640-052 R A. Lubricate the Trimmable Horizontal Stabilizer (THS) Actuator Ball Screw R Nut CAUTION : DO NOT MIX LITHIUM-COMPLEX THICKENED GREASE WITH CLAY-
_______ THICKENED GREASE. IF YOU MIX THESE GREASES, YOU CAN CAUSE DAMAGE TO THE BALL NUT OF THE THS ACTUATOR.
(1)
Clean the greaser and the THS actuator ball-screw nut with a clean MISCELLANEOUS (Material No. 19-003).
(2)
Use a pin - non-metallic and make sure that the vent hole of the ball-screw nut is clear.
(3)
Use a gun - grease and apply the new COMMON GREASE (Material No. 04-004) through the greaser of the ball-screw nut. Apply the grease until it comes out through the vent hole.
NOTE : It is normal that some grease also comes out through the
____
top/bottom nut seals.
(4) Put a container 1l in position below the vent hole.
R (5) Use a gun - grease and apply more new COMMON GREASE (Material No. 04-004) through the greaser of the ball-screw nut. Continue to apply grease until approximately 50 cm3 (3.05 in.3) of the grease comes out through the vent hole.
(6) Remove the gun - grease and make sure that the ball in the greaser closes correctly after lubrication.
(7) Clean the unwanted grease from the greaser and the ball-screw nut with a MISCELLANEOUS (Material No. 19-003).
(8) Make sure the travel range of the THS actuator ball-screw nut is clear.
Subtask 12-22-27-865-066
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 19CE1, 19CE2, 19CE3.
Subtask 12-22-27-865-067
C. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU FLIGHT CONTROLS/ELAC2/NORM/SPLY 15CE2 R20
Subtask 12-22-27-860-053
D. Cycle the Trimmable Horizontal Stabilizer (THS)
(1) Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).
R R (2) On the FLT CTL panel 23VU: - make sure that the FLT CTL/ELAC 1 and FLT CTL/SEC 1 pushbutton switches are pushed in. On these pushbutton switches, the OFF and FAULT legends are off.
R R (3) On the FLT CTL panel 24VU: - make sure that the FLT CTL/ELAC 2 and FLT CTL/SEC 2 pushbutton switches are pushed in. On these pushbutton switches, the OFF and FAULT legends are off.
(4) Do the EIS start procedure (Ref. TASK 31-60-00-860-001).
R R R (5) On the center pedestal, on the ECAM control panel, push (in) the F/CTL pushbutton switch. On the lower ECAM display unit, the F/CTL page comes into view.
(6) Pressurize the Green and the Yellow hydraulic systems (Ref. TASK 29-23-00-863-001) (Ref. TASK 29-24-00-863-001).
(7) On the center pedestal, use the pitch-trim control wheel to operate the THS through one full cycle as follows: - slowly move the THS to the 13.5 deg UP stop - slowly move the THS to the 4 deg DN stop - slowly move the THS back to the 0 position.
(8) Depressurize the Green and Yellow hydraulic systems (Ref. TASK 29-23-00-864-001) and (Ref. TASK 29-24-00-864-001).
(9) Do the EIS stop procedure (Ref. TASK 31-60-00-860-002).
(10) De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).
(11) Make sure the warning notice(s) are in position.
Subtask 12-22-27-865-068
E. Open, safety and tag this(these) circuit breaker(s):
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