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(e) An adapter ring, with a V-groove, is bolted to the outer casing rear flange to adapt the outer cowl of the engine (fan) thrust reverser (Ref. 78-30-00).
4. Fan Inlet Case Assembly_______________________ (Ref. Fig. 001, 002) The fan inlet case assembly is composed of the 2 parts which follows:
- The upstream fan case
- The downstream fan case The upstream fan case is a structural weldment made of alloy steel. The outer rear flange is bolted to the downstream fan case outer front flange. The downstream fan case is made of aluminium. The outer rear flange is bolted to the outer front flange of the fan frame. The outer surface of the fan inlet case assembly has flanges and ribs to provide additional strength to the case during engine operation. It also has 2 hoisting points for engine ground handling purposes (2 and 10 o'clock positions), 2 accessory gearbox (AGB) mounts and various other mounting provisions for engine equipment. The inner surface houses an abradable shroud located radially in line with the fan rotor blades, 6 fan forward acoustical panels, 6 fan mid acoustical panels, the fan OGV assembly and 12 aft acoustical panels. The engine air inlet cowl is attached to the front flange of the fan inlet case. The fan outlet guide vanes (OGV) are made of composite material. The fan OGV inner shroud rear flange is bolted to the fan frame. Its forward outer surface contains 35 apertures to allow passage of the vane inner platforms and two borescope inspection ports. The fan splitter fairing is attached to the forward end of the fan OGV inner shroud. The fan OGV assembly has 35 twin vanes (or vane doublets). The vane inner platform are axially retained by the inner face of the fan (OGV) inner shroud. The vane outer platforms are bolted to the fan inlet case.
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FAN FRAME ASSEMBLY - REMOVAL/INSTALLATION
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TASK 72-23-00-000-008
Removal of the Fan Outlet Guide Vane (OGV) Doublets
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
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REFERENCE QTY DESIGNATION
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No specific warning notice
No specific access platform 1 m (3 ft. 3 in.)
B. Referenced Information
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REFERENCE DESIGNATION
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71-13-00-010-040 Opening of the Fan Cowl Doors
R 72-23-00-000-026 Removal of the Aft Acoustical Panels 78-30-00-481-041 Make the Thrust Reverser Unserviceable for
Maintenance
78-36-00-010-040 Opening of the Thrust Reverser Doors
72-23-00-991-300 Fig. 401
3. Job Set-up
__________
Subtask 72-23-00-941-071
A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a warning notice to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
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(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a warning notice to tell persons not to energize the FADEC 1(2).
Subtask 72-23-00-010-083
B. Get Access
(1) Open the fan cowl doors: (Ref. TASK 71-13-00-010-040)
FOR 1000EM1
437AL, 438AR
FOR 1000EM2
447AL, 448AR
(2) Put the access platform in position. Subtask 72-23-00-040-061
C. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041). Subtask 72-23-00-010-094
D. Open the thrust reverser doors: (Ref. TASK 78-36-00-010-040)
FOR 1000EM1
451AL, 452AR
FOR 1000EM2
461AL, 462AR
4. Procedure
_________ (Ref. Fig. 401/TASK 72-23-00-991-300) Subtask 72-23-00-020-059
A. Removal of the Fan Outlet Guide Vane (OGV) Doublets (Rearward)
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