(2)
Remove the warning notice(s).
(3)
Remove the access platform(s).
(4)
Remove the ground support and maintenance equipment, the special and standard tools and all other items.
TASK 29-11-48-000-002
Removal of the Check Valve 1170GM
WARNING : PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU
_______ START A TASK ON OR NEAR:
-
THE FLIGHT CONTROLS
-
THE FLIGHT CONTROL SURFACES
-
THE LANDING GEAR AND THE RELATED DOORS
-COMPONENTS THAT MOVE.
WARNING : MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING
_______ GEAR.
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION
-------------------------------------------------------------------------------
No specific blanking plugs
No specific circuit breaker(s) safety clip(s)
No specific safety barriers
No specific warning notice
No specific container 1 l (0.2641 USgal)
No specific access platform 3.5 m (11 ft. 6 in.)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
27-50-00-866-008 Extension of the Flaps on the Ground 29-00-00-910-002 Safety Procedures of the Hydraulic System 29-10-00-864-001 Depressurize the Green Hydraulic System 29-14-00-614-001 Depressurization of the Hydraulic Reservoirs 29-23-00-860-001 Disconnection of the Isolation Coupling of the Power
Transfer Unit (PTU) 29-11-48-991-002 Fig. 402
3. Job Set-up
__________
(Ref. Fig. 402/TASK 29-11-48-991-002) Subtask 29-11-48-941-055
A. Safety Precautions
WARNING : OBEY THE HYDRAULIC SAFETY PROCEDURES.
_______
(1)
You must obey the hydraulic safety procedures (Ref. TASK 29-00-00-910-002) when you do work on the hydraulic system.
(2)
Put the safety barriers in position.
(3)
Put a warning notice in position to tell persons not to pressurize the Green hydraulic system.
(4)
Put a warning notice in position to tell persons not to operate the flaps.
Subtask 29-11-48-860-051
B. Aircraft Maintenance Configuration
(1)
Extend the flaps fully (Ref. TASK 27-50-00-866-008).
(2)
Make sure that the TOOL-ZERO LOCKING, FLAP SLAT CTL LEVER (98D27803500001) is on the flap/slat control lever.
(3)
Depressurize the Green hydraulic system (Ref. TASK 29-10-00-864-001).
(4)
Depressurize the Green hydraulic system reservoir (Ref. TASK 29-14-00-614-001).
(5)
Disconnect the PTU isolation coupling (Ref. TASK 29-23-00-860-001).
Flap WTB Check Valve 1170GM
Figure 402/TASK 29-11-48-991-002
1EFF : ALL 1 29-11-48 Page 414
1 1 Feb 01/98
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1CES 1
Subtask 29-11-48-865-051
C. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU FLIGHT CONTROLS/SEC1/NORM/SPLY 21CE1 B08 49VU FLIGHT CONTROLS/FLP/CTL AND MONG/SYS1 6CV B07 105VU FLT CTL/SEC1/STBY SPLY 22CE B01 121VU FLIGHT CONTROLS/WTB/FLP/SYS2 12CV P20 121VU FLIGHT CONTROLS/FLP/CTL AND/MONG/SYS2 8CV Q21 121VU FLIGHT CONTROLS/SEC3/SPLY 21CE3 Q19 121VU FLIGHT CONTROLS/SEC2/SPLY 21CE2 Q18 121VU HYDRAULIC/G HYD/PUMP ENG1/CTL 1701GK R35 121VU HYDRAULIC/G HYD/PUMP ENG1/MONG 1702GK R34 122VU FLIGHT CONTROLS/WTB/FLP/SYS1 10CV S07
Subtask 29-11-48-010-051
D. Get Access
(1)
Put an access platform below the applicable access panel 675DB.
(2)
Remove the access panel 675DB.
(3)
Put a container below the check valve (4).
4. Procedure
_________
(Ref. Fig. 402/TASK 29-11-48-991-002)
Subtask 29-11-48-020-051
A. Removal of the Check Valve
