3. Job Set-up
__________
(Ref. Fig. 401/TASK 27-44-53-991-001) Subtask 27-44-53-860-051
A. Aircraft Maintenance Configuration WARNING : MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROL SURFACES
_______ ARE CLEAR BEFORE YOU PRESSURIZE/DEPRESSURIZE A HYDRAULIC SYSTEM.
WARNING : OBEY THE HYDRAULIC SAFETY PROCEDURES.
_______
(1)
Obey the hydraulic safety procedures (Ref. TASK 29-00-00-910-002).
(2)
Make sure that the access platform is in position below the access door 312AR.
(3)
Make sure that the access door 312AR is open.
(4)
Make sure that the warning notices are in position in the cockpit to tell persons not to operate the pitch controls.
(5)
Make sure that the hydraulic systems are depressurized and put them in the maintenance configuration. (Ref. TASK 29-00-00-864-001).
(6)
Make sure that the reservoirs of the Green and Yellow hydraulic systems are depressurized. (Ref. TASK 29-14-00-614-001).
(7)
Make sure that the warning notices are in position to tell persons not to pressurize 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.
1EFF : ALL 1 27-44-53Page 408 1 1 Aug 01/01R 1 1 1CES 1
Subtask 27-44-53-865-052
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------
PANEL DESIGNATION IDENT. LOCATION
-------------------------------------------------------------------------------
49VU FLIGHT CONTROLS/ELAC1/NORM/SPLY 15CE1 B11
49VU FLIGHT CONTROLS/THS/ACTR/MOT2 19CE2 B09 R 105VU FLT CTL/ELAC1/STBY SPLY 16CE1 A01 R
121VU FLIGHT CONTROLS/THS ACTR/MOT3 19CE3 Q17
121VU FLIGHT CONTROLS/THS ACTR/MOT1 19CE1 Q16
Subtask 27-44-53-210-050
C. Visual Inspection
(1)
Clean the interface of the THS actuator motor (2) with CLEANING AGENTS (Material No. 11-002) and let it dry.
(2)
Clean the interface of the THS actuator (1) with CLEANING AGENTS (Material No. 11-002) and let it dry.
(3)
Make sure that the subsequent components are clean, have no corrosion and show no damage:
-
the interface of the THS actuator (1),
-
the splined shaft (20),
-
the screws (7),
-
the expansion plugs (12),(18),
-
the spacer tubes (13),(15),(19),
(4)
Apply COMMON GREASE (Material No. 04-015) to the splined shaft (20).
4. Procedure
_________
(Ref. Fig. 401/TASK 27-44-53-991-001)
Subtask 27-44-53-560-050
A. Preparation of the Replacement Components
(1) Install the spacer tube assemblies (3),(4),(5).
NOTE : The two THS actuator motors (2) are the same. The installation
____ of one of the motors (2) only is given.
(2)
Remove the blanking plugs from the ports of the valve block unit (6).
(3)
Remove the blanking caps from the ends of the spacer tubes (13),(15),(19).
(4)
Install the spacer tube assembly (4).
(a)
Apply COMMON GREASE (Material No. 04-015) to the O-rings (14).
(b)
Put the O-rings (14) in position at each end of the spacer tube (15).
(c)
Put the spacer tube assembly (4) in position in the base plate of the motor (2).
(5)
Install the spacer tube assembly (3).
(a)
Use the CONE - MOUNTING, THS ACTUATOR (0U145413) and the RING -SHRINKING, THS ACTUATOR (0U145414) to put the back-up rings (10) in position at each end of the spacer tube (13).
(b)
Apply COMMON GREASE (Material No. 04-015) to the O-rings (11).
(c)
Use the CONE - MOUNTING, THS ACTUATOR (0U145413) and put two O-rings (11) in position at each end of the spacer tube (13).
(d)
Use the CONE - MOUNTING, THS ACTUATOR (0U145413) and the RING -SHRINKING, THS ACTUATOR (0U145414) to put a second back-up ring
(10)
in position at each end of the spacer tube (13).
(e)
Put the expansion plug (12) in position in the base plate of the motor (2).
(f)
Put the spacer tube assembly (3) on the expansion plug (12).
(6)
Install the spacer tube assembly (5).
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