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 3. Job Set-up
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 Subtask 73-11-10-860-053
 A. Aircraft Maintenance Configuration
 (1) On the center pedestal, on the ENG panel 115VU, make sure that a warning notice is in position to tell persons not to start the engine.

 (2) On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a warning notice is in position to tell persons not to energize the FADEC 1(2).

 Subtask 73-11-10-010-067
 B. Make sure that the fan cowl doors are open (Ref. TASK 71-13-00-010-040): FOR 1000EM1 437AL, 438AR FOR 1000EM2 447AL, 448AR
 4. Procedure
_________
 (Ref. Fig. 401/TASK 73-11-10-991-300, 402/TASK 73-11-10-991-301, 403/TASK 73-11-10-991-302)
 Subtask 73-11-10-420-061
 A. Installation of the Fuel Pump
R (1) Remove the blankings plugs from the disconnected line ends.
R (2) Apply a thin layer of engine oil (Material No. CP2442) to a new O-ring (80) and install it on the groove of the
 PRE SB CFM56-5 72-094
R (3) Lubricate the re-usable, or new seal (70) with engine oil (Material No. CP2442) and install on fixed part of QAD ring.
 POST SB CFM56-5 72-094
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R  (4) Install the seal ring assembly (70) as follows:
 (a) If necessary, install a new preformed packing (200) on the support (190).
 (b) Lubricate the seal ring assembly (70) with engine oil (Material No. CP2442).
 (c) Install the seal ring assembly (70) on fixed part of QAD ring. END OF SB CFM56-5 72-094 
R  (5) Make sure that the 3 tabs of the seal are correctly locked by the lugs of the adapter flange. 
R  (6) Apply a thin layer of engine oil (Material No. CP2442) to the new O-ring (90) and O-ring (120) and the threads of the nipples (100 and 110). 
R  (7) Install the O-rings (90 and 120) on the nipples (100 and 110). Install the nipples on the fuel filter housing. TORQUE the nipples to between 90 and 100 lbf.in (1.01 and 1.13 m.daN). 
R  (8) Apply a thin layer of engine oil (Material No. CP2442) to the new O-ring (50) and the threads of the nipple (60). 
R  (9) Install the O-ring (50) on the nipple (60). Install the nipple on the fuel pump. TORQUE nipple to between 350 and 400 lbf.in (3.95 and 4.52 m.daN). 
R  (10) Remove the cover from the handcranking drive pad (Ref. TASK 72-63-00-000-002).
 Subtask 73-11-10-820-051
 B. Align the Pump Drive Shaft 
R  (1) Insert a 0.75 in. drive turning handle in the handcranking drive pad.
R  (2) Align the pump drive shaft with the drive recess in the Auxiliary Gearbox (AGB) using the 0.75 in. drive turning handle.

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 Subtask 73-11-10-420-058

 C. Installation of the Fuel Pump and Filter Assembly
 CAUTION : CAREFULY ALIGN PUMP TO AGB TO PREVENT SPLINE DAMAGE. CLOSELY
_______ OBSERVE THE ALIGNMENT OF THE LOCATING DOWELS.
 CAUTION : DURING INSTALLATION, KEEP THE DRIVE SHAFT PERPENDICULAR TO THE
_______ AGB MOUNTING FLANGE, MAKE SURE THAT THERE IS NO LOAD ON THE DRIVE SHAFT.
 (1) Engage the pump drive shaft into its AGB drive recess.
R (2) Apply a thin layer of graphite grease (Material No. CP2101) to the R QAD bolt (150) threads. Make sure that the ball seat washer (180) is R installed under the QAD bolt head (150). Install the bolt (150) with R the washer (180) in the bracket. Install the retaining packing (160)
 on the bolt (150).
 (3) Attach the package as follows:
R (a) Turn the QAD ring (170) clockwise until it is correctly R installed.
R (b) TORQUE the QAD bolt (150) to between 310 and 320 lbf.in (3.50 and
 3.61 m.daN)
R (c) Radially tap the exposed outer diameter of the QAD (170) to set R the ring to its correct position.
R (d) Do the step (b) and (c) two more times. R
R (e) Check the QAD ring seating R - Make sure that the gap (DIM. A) between the boss of the QAD R ring (170) and the flange of the QAD ring support is between R 0.25 in. (6.3499 mm) and 1 in. (25.3999 mm).
R NOTE : If necessary, use the minimum tightening TORQUE to get the
____ R minimum gap (DIM. A).
R 1_ If the gap (DIM. A) is out of these limits, change the QADR ring (170) and repeat the QAD installation procedure.
　
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