Installation of the Fuel Nozzle for DAC Engines [CFMB]
TASK 73-11-40-400-002-A-01
Installation of the Fuel Nozzle for DAC Engines
1. Reason for the Job
This TASK is applicable for DAC Engines.
There are 20 fuel nozzles installed in each engine. This procedure can be used to install one or more of the fuel nozzles.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Expendable Parts
E. Referenced Information
3. Job Set-up
Subtask 73-11-40-860-054-A ** ON A/C NOT FOR ALL
Subtask 73-11-40-210-054-A ** ON A/C NOT FOR ALL Subtask 73-11-40-420-061-A ** ON A/C NOT FOR ALL
Subtask 73-11-40-410-066-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 02:57:57 UTC
Installation of the Fuel Nozzle for DAC Engines
1. Reason for the Job
This TASK is applicable for DAC Engines.
There are 20 fuel nozzles installed in each engine. This procedure can be used to install one or more of the fuel nozzles.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.CP2101) | graphite grease |
| (Material No.CP2850) | fuel system corrosion preventive oil |
| (Material No.CP2854) | vaseline |
| (Material No.CP8001) | lockwire 0.032 in. (0.8 mm) dia. |
| (Material No.CP8002) | lockwire 0.032 in. (0.8 mm) dia |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR, 451AL, 452AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR, 461AL, 462AR | |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 160 | PACKING | AIPC 73-00-00-09-020 |
| 150 | O-RING | AIPC 73-11-40-03-010 |
| 140 | O-RING | AIPC 73-11-40-03-020 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 36-11-49-400-044-A | Installation of the High-Pressure Tee Duct |
| TASK 36-11-49-400-045-A | Installation of the Lower High-Pressure Duct |
| TASK 36-11-49-400-046-A | Installation of the Upper High-Pressure Duct |
| TASK 36-11-49-400-048-A | Installation of the Fifth-Stage Elbow Duct |
| TASK 70-21-00-918-002-A | Seals (Preformed Packings and O-rings) and Gaskets |
| TASK 71-00-00-710-006-B | Minimum Idle Check |
| TASK 71-13-00-010-040-B | Opening of the Fan Cowl Doors |
| TASK 71-13-00-410-040-B | Closing of the Fan Cowl Doors |
| TASK 73-11-40-790-002-A | Leak Check of the Fuel Nozzles for SAC Engines |
| TASK 73-11-40-790-002-A-01 | Leak Check of the Fuel Nozzles for DAC Engines |
| TASK 74-21-30-400-002-A | Installation of the Spark Igniter |
| TASK 78-30-00-081-041-B | Make the Thrust Reverser Serviceable after Maintenance |
| TASK 78-30-00-481-041-B | Make the Thrust Reverser Unserviceable for Maintenance |
| TASK 78-36-00-010-040-B | Opening of the Thrust Reverser Doors |
| TASK 78-36-00-410-040-B | Closing of the Thrust Reverser Doors |
Subtask 73-11-40-860-054-A ** ON A/C NOT FOR ALL
A. Aircraft Maintenance Configuration
(1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) 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) is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).
(3) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
Subtask 73-11-40-010-072-A ** ON A/C NOT FOR ALL (1) On the center pedestal, on the ENG panel 115VU, make sure that a WARNING NOTICE(S) 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) is off. Make sure that a WARNING NOTICE(S) is in position to tell persons not to energize the FADEC 1(2).
(3) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position.
B. Get Access
(1) Make sure that the fan cowl doors are open: (Ref. AMM TASK 71-13-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Make sure that the thrust reverser doors are open: (Ref. AMM TASK 78-36-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
Subtask 73-11-40-040-063-A ** ON A/C NOT FOR ALL 4. Procedure(1) Make sure that the fan cowl doors are open: (Ref. AMM TASK 71-13-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Make sure that the thrust reverser doors are open: (Ref. AMM TASK 78-36-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
Subtask 73-11-40-210-054-A ** ON A/C NOT FOR ALL Subtask 73-11-40-420-061-A ** ON A/C NOT FOR ALL
B. Installation of the fuel nozzles:
(1) Remove the protective caps from the fuel nozzles, fuel lines and combustion case pads.
Pre SB CFM56-5B 72-181
(2) Apply a thin layer of vaseline (Material No.CP2854) on the new AIPC 73-11-40-03-020 O-RING (140) for the drain shroud and on the new AIPC 73-11-40-03-010 O-RING (150) for the fuel nozzle.
Post SB CFM56-5B 72-181
(3) Apply a thin layer of vaseline (Material No.CP2854) on the new AIPC 73-11-40-03-020 O-RING (140) for the coupling shroud and on the new AIPC 73-11-40-03-010 O-RING (150) for the fuel nozzle.
End of SB CFM56-5B 72-181
(4) Install the new O-ring (140) on both of the fuel supply tubes.
(5) Install the new O-ring (150) in the groove just aft of the nut sleeve threads on both of the nozzle inlets.
(6) Apply a thin layer of vaseline (Material No.CP2854) to the tip of the fuel nozzle.
(7) Install a serviceable seal ring assembly on the flange of the fuel nozzle. Align the holes in the flange of the seal ring assembly with the holes in the flange of the nozzle.
(8) Install the nozzle.
(b) Turn the nozzle counterclockwise while you push it down onto the combustion case pad.
(9) Move the nozzle aft to engage the tip of the nozzle in the combustor inner and outer ferrules.
(10) Apply a thin layer of graphite grease (Material No.CP2101) to the threads and friction surfaces of the bolts (10) and (50) that attach the nozzles to the combustion case.
Pre SB CFM56-5B 72-181
(11) Move the drain support bracket (20) into the correct position, if necessary.
End of Pre SB CFM56-5B 72-181
(12) Put the brackets into position on top of the fuel nozzle, if necessary.
(13) Install the bolts to attach the fuel nozzle, seal ring assembly and brackets, as necessary, to the combustion case.
.
(15) Safety the bolts (10) and (50) withCP8001 lockwire 0.032 in. (0.8 mm) dia. or CP8002 lockwire 0.032 in. (0.8 mm) dia .
(16) Apply a small amount of fuel system corrosion preventive oil (Material No.CP2850) on the nut to ferrule interface surfaces of the fuel nozzle inlets, fuel supply tubes, and drain tube to manifold connections.
Post SB CFM56-5B 72-181
(17) Apply a small amount of fuel system corrosion preventive oil (Material No.CP2850) on the nut to ferrule interface surfaces of the fuel nozzle inlets and fuel supply tubes.
End of SB CFM56-5B 72-181
(18) Connect the fuel supply tube to the nozzle. TORQUE the coupling nut to between 135 and 120 lbf.in (1.53 and 1.36 m.daN )
.
(19) Safety each of the fuel supply tube coupling nuts to the tab on each of the nozzle inlets withCP8001 lockwire 0.032 in. (0.8 mm) dia. or CP8002 lockwire 0.032 in. (0.8 mm) dia .
Pre SB CFM56-5B 72-181
(20) Slide both of the shrouds over the inlets of the fuel nozzle and turn clockwise 90 degrees. The open drain opening should be at the top of the connection.
Post SB CFM56-5B 72-181
(21) Slide both of the shrouds over the inlets of the fuel nozzle and turn clockwise 90 degrees.
(22) Do a leak check of the fuel nozzles (Ref. AMM TASK 73-11-40-790-002)
End of SB CFM56-5B 72-181
Pre SB CFM56-5B 72-181
(23) Install new AIPC 73-00-00-09-020 PACKING (160) lubricated with vaseline (Material No.CP2854) on each fuel drain tube.
(24) Install the fuel drain tubes to the opening at the top of each shroud and to the fuel drain manifold.
(25) TORQUE the coupling nuts that attach the fuel drain tubes to the fuel nozzles and the drain manifold to between 133 and 122 lbf.in (1.50 and 1.38 m.daN )
.
(26) Do a leak check of the fuel nozzles: (Ref. AMM TASK 73-11-40-790-002).
End of Pre SB CFM56-5B 72-181
Subtask 73-11-40-420-062-A ** ON A/C NOT FOR ALL NOTE: The fuel nozzles are given position numbers in a clockwise (CW) sequence when you look at them from the aft of the engine. Position number 1 is at 12 o'clock.
Pre SB CFM56-5B 72-181 NOTE: There are two types of fuel nozzles. Nozzles in positions 1, 3, 5, 7, 9, 11, 13, 15, 17 and 19 are bleed fuel nozzles. Nozzles in positions 2, 4, 6, 8, 10, 12, 14, 16, 18 and 20 are cooling fuel nozzles. The same type of fuel nozzle must be installed in each position during replacement.
Post SB CFM56-5B 72-181 NOTE: There are two types of fuel nozzles. Nozzles in positions 1, 2, 5, 6, 9, 10, 13, 14, 17 and 18 are bleed fuel nozzles. Nozzles in positions 3, 4, 7, 8, 11, 12, 15, 16, 19 and 20 are cooling fuel nozzles. The same type of fuel nozzle must be installed in each position during replacement.
End of SB CFM56-5B 72-181 (1) Remove the protective caps from the fuel nozzles, fuel lines and combustion case pads.
Pre SB CFM56-5B 72-181
(2) Apply a thin layer of vaseline (Material No.CP2854) on the new AIPC 73-11-40-03-020 O-RING (140) for the drain shroud and on the new AIPC 73-11-40-03-010 O-RING (150) for the fuel nozzle.
Post SB CFM56-5B 72-181
(3) Apply a thin layer of vaseline (Material No.CP2854) on the new AIPC 73-11-40-03-020 O-RING (140) for the coupling shroud and on the new AIPC 73-11-40-03-010 O-RING (150) for the fuel nozzle.
End of SB CFM56-5B 72-181
(4) Install the new O-ring (140) on both of the fuel supply tubes.
(5) Install the new O-ring (150) in the groove just aft of the nut sleeve threads on both of the nozzle inlets.
(6) Apply a thin layer of vaseline (Material No.CP2854) to the tip of the fuel nozzle.
(7) Install a serviceable seal ring assembly on the flange of the fuel nozzle. Align the holes in the flange of the seal ring assembly with the holes in the flange of the nozzle.
(8) Install the nozzle.
CAUTION:
DO NOT USE FORCE TO INSTALL THE NOZZLE IN THE COMBUSTION CASE. YOU MAY CAUSE DAMAGE TO THE COMBUSTION CHAMBER INNER OR OUTER FERRULES OR TO THE TIP OF THE NOZZLE.
(a) Put the nozzle into the combustion case pad with the tip forward. (b) Turn the nozzle counterclockwise while you push it down onto the combustion case pad.
(9) Move the nozzle aft to engage the tip of the nozzle in the combustor inner and outer ferrules.
(10) Apply a thin layer of graphite grease (Material No.CP2101) to the threads and friction surfaces of the bolts (10) and (50) that attach the nozzles to the combustion case.
Pre SB CFM56-5B 72-181
(11) Move the drain support bracket (20) into the correct position, if necessary.
End of Pre SB CFM56-5B 72-181
(12) Put the brackets into position on top of the fuel nozzle, if necessary.
(13) Install the bolts to attach the fuel nozzle, seal ring assembly and brackets, as necessary, to the combustion case.
NOTE: Make sure you use the correct length bolts (10) at positions where there are brackets and that the brackets are installed in the correct position on top of the fuel nozzle.
(14) TORQUE the bolts (10) and (50) to between 120 and 110 lbf.in (1.36 and 1.24 m.daN )
. (15) Safety the bolts (10) and (50) with
NOTE: You may wait to safety the bolts with lockwire until after the leak check is completed.
NOTE: In all cases, wiring must be installed through the holes provided. When no hole is provided, attach the wire to a neighboring part so as not to interfere with the function of the parts, and in accordance with the recommendations Ref. AMM 70-22-00-991-002-A, Locking Procedures.
Pre SB CFM56-5B 72-181 (16) Apply a small amount of fuel system corrosion preventive oil (Material No.CP2850) on the nut to ferrule interface surfaces of the fuel nozzle inlets, fuel supply tubes, and drain tube to manifold connections.
Post SB CFM56-5B 72-181
(17) Apply a small amount of fuel system corrosion preventive oil (Material No.CP2850) on the nut to ferrule interface surfaces of the fuel nozzle inlets and fuel supply tubes.
End of SB CFM56-5B 72-181
(18) Connect the fuel supply tube to the nozzle. TORQUE the coupling nut to between 135 and 120 lbf.in (1.53 and 1.36 m.daN )
. (19) Safety each of the fuel supply tube coupling nuts to the tab on each of the nozzle inlets with
Pre SB CFM56-5B 72-181
(20) Slide both of the shrouds over the inlets of the fuel nozzle and turn clockwise 90 degrees. The open drain opening should be at the top of the connection.
Post SB CFM56-5B 72-181
(21) Slide both of the shrouds over the inlets of the fuel nozzle and turn clockwise 90 degrees.
(22) Do a leak check of the fuel nozzles (Ref. AMM TASK 73-11-40-790-002)
End of SB CFM56-5B 72-181
Pre SB CFM56-5B 72-181
(23) Install new AIPC 73-00-00-09-020 PACKING (160) lubricated with vaseline (Material No.CP2854) on each fuel drain tube.
(24) Install the fuel drain tubes to the opening at the top of each shroud and to the fuel drain manifold.
(25) TORQUE the coupling nuts that attach the fuel drain tubes to the fuel nozzles and the drain manifold to between 133 and 122 lbf.in (1.50 and 1.38 m.daN )
. (26) Do a leak check of the fuel nozzles: (Ref. AMM TASK 73-11-40-790-002).
End of Pre SB CFM56-5B 72-181
C. Installation of the HPTACC manifold:
(2) Install a serviceable C-seal on the upper combustion case pad. Align the holes in the C-seal with the holes in the combustion case pad.
(3) Install a serviceable C-seal on the lower combustion case pad. Align the holes in the C-seal with the holes in the combustion case pad.
(4) Put the manifold in position on the upper and lower combustion case pads.
(5) Apply a thin layer of graphite grease (Material No.CP2101) to the threads and friction surfaces of the bolts.
(6) Temporarily install the bolts in the manifold and the upper and lower combustion case pads. Do not tighten the bolts at this time.
(7) Install the bolts, nuts, serviceable gaskets and plate between the forward 4-bolt pad of the HPTACC manifold and the air manifold. Ensure that one gasket is installed on each side of the plate and that the bolt heads are on the forward side. TORQUE the bolts to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
.
(8) Install the V-clamp and a serviceable seal between the large forward port of the HPTACC manifold and the discharge port of the HPTACC valve at 3 o'clock. TORQUE to between 80 and 70 lbf.in (0.90 and 0.79 m.daN )
.
(9) TORQUE the bolts at the upper combustion case pad to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
.
(10) TORQUE the bolts at the lower combustion case pad to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
.
(11) Wirelock the bolts at the upper combustion case pad withCP8001 lockwire 0.032 in. (0.8 mm) dia. or CP8002 lockwire 0.032 in. (0.8 mm) dia
(12) Wirelock the bolts at the lower combustion case pad withCP8001 lockwire 0.032 in. (0.8 mm) dia. or CP8002 lockwire 0.032 in. (0.8 mm) dia .
(13) Put the strap clamp on the HPTACC manifold and the support bracket assembly at the fuel nozzle in position 6. Install the bolts, washers and nuts.
(14) TORQUE the bolts to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
.
(15) Put the strap clamp on the HPTACC manifold at the bracket between flange R and flange S. Install the bolts.
(16) TORQUE the bolts to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
.
(17) Put the strap clamp on the HPTACC manifold at the bracket at the combustion case end of the upper RH LPT cooling tube. Install the bolts, washers and nuts.
(18) TORQUE the bolts to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
.
(19) Put the strap clamp on the HPTACC manifold at the bracket at the combustion case end of the lower RH LPT cooling tube. Install the bolts, washers and nuts.
(20) TORQUE the bolts to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
.
(21) If removed, install the LPTACC tube as follows:
(a) Remove the protective covers from the open ends of the LPTACC tube and the open end of the LPTACC valve.
(b) Ensure that the piston ring is installed on the aft end of the LPTACC tube.
(c) Carefully engage the aft end of the LPTACC tube in the LPTACC air manifold.
(d) Attach the forward end of the LPTACC tube to the LPTACC valve with the clamp assembly. Hand tighten the nut on the clamp assembly.
(e) Apply a thin layer of graphite grease (Material No.CP2101) to the threads and friction surfaces of the bolt.
(f) Attach the LPTACC tube to the support bracket assembly at the fuel nozzle in position 6 with bolt, nut and washer.
(g) TORQUE the nut to between 110 and 98 lbf.in (1.24 and 1.11 m.daN )
.
(h) TORQUE the nut on the clamp assembly to between 53 and 47 lbf.in (0.60 and 0.53 m.daN )
.
(22) If removed, install the start bleed tube as follows:
(a) Remove the protective covers from the open ends of the start bleed tube, the open pad of the combustion case and the open port of the RACSB valve.
(b) Apply a thin layer of graphite grease (Material No.CP2101) to the threads and friction surfaces of the bolts.
(c) Install a serviceable seal on the combustion case pad. Align the holes in the seal with the holes in the pad.
(d) Put the start bleed tube in position on the combustion case pad. Temporarily install the bolts. Do not torque the bolts at this time.
(e) Install a serviceable gasket between the end of the start bleed tube and the RACSB valve.
(f) Install the bolts that attach the start bleed tube to the RACSB valve.
(g) TORQUE the bolts that attach the start bleed tube to the combustion case pad to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
.
(h) TORQUE the bolts that attach the start bleed tube to the RACSB valve to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
.
(i) Safety the bolts withCP8001 lockwire 0.032 in. (0.8 mm) dia. or CP8002 lockwire 0.032 in. (0.8 mm) dia .
(j) Install the bolts, strap clamp, washers (350) and nuts that attach the start bleed tube to the start bleed tube bracket.
(k) TORQUE the bolts to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
.
(23) If removed, install the strap clamps that attach the LPT cooling tubes, to the LPT cooling brackets at fuel nozzles in positions 3, 8, 13, and 18 as follows:
(a) Apply a thin layer of graphite grease (Material No.CP2101) to the threads and friction surfaces of the bolts.
(b) Install the bolts, strap clamps, washers and nuts on the LPT cooling brackets at the nozzle.
(24) If removed or displaced, install the ignition leads and spark igniters as follows:
(a) Install the left ignition lead into the clip on the support bracket at the fuel nozzle in position 11.
(25) If removed, install the right ignition lead into the hinged clamps on the core engine. Turn the attachment bolt of the hinged clamp a quarter of a turn to engage the locking feature, and continue to torque until the ignition lead no longer moves in the clamp .
(26) Remove protective covers and install the spark igniter (Ref. AMM TASK 74-21-30-400-002).
(a) If removed, install the engine bleed air ducts (Ref. AMM TASK 36-11-49-400-044) or (Ref. AMM TASK 36-11-49-400-045) or (Ref. AMM TASK 36-11-49-400-046) or (Ref. AMM TASK 36-11-49-400-048).
5. Close-upCAUTION:
BE CAREFUL NOT TO CUT OR DENT THE INSULATION FOIL THAT COVERS THE HPTACC MANIFOLD.
ENGINE EFFICIENCY COULD BE AFFECTED.
(1) Remove the protective covers from the open ends of the HPTACC manifold, the open pads of the combustion case and the open ports of the HPTACC valve. (2) Install a serviceable C-seal on the upper combustion case pad. Align the holes in the C-seal with the holes in the combustion case pad.
(3) Install a serviceable C-seal on the lower combustion case pad. Align the holes in the C-seal with the holes in the combustion case pad.
(4) Put the manifold in position on the upper and lower combustion case pads.
(5) Apply a thin layer of graphite grease (Material No.CP2101) to the threads and friction surfaces of the bolts.
(6) Temporarily install the bolts in the manifold and the upper and lower combustion case pads. Do not tighten the bolts at this time.
(7) Install the bolts, nuts, serviceable gaskets and plate between the forward 4-bolt pad of the HPTACC manifold and the air manifold. Ensure that one gasket is installed on each side of the plate and that the bolt heads are on the forward side. TORQUE the bolts to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
. (8) Install the V-clamp and a serviceable seal between the large forward port of the HPTACC manifold and the discharge port of the HPTACC valve at 3 o'clock. TORQUE to between 80 and 70 lbf.in (0.90 and 0.79 m.daN )
. (9) TORQUE the bolts at the upper combustion case pad to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
. (10) TORQUE the bolts at the lower combustion case pad to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
. (11) Wirelock the bolts at the upper combustion case pad with
(12) Wirelock the bolts at the lower combustion case pad with
(13) Put the strap clamp on the HPTACC manifold and the support bracket assembly at the fuel nozzle in position 6. Install the bolts, washers and nuts.
(14) TORQUE the bolts to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
. (15) Put the strap clamp on the HPTACC manifold at the bracket between flange R and flange S. Install the bolts.
(16) TORQUE the bolts to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
. (17) Put the strap clamp on the HPTACC manifold at the bracket at the combustion case end of the upper RH LPT cooling tube. Install the bolts, washers and nuts.
(18) TORQUE the bolts to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
. (19) Put the strap clamp on the HPTACC manifold at the bracket at the combustion case end of the lower RH LPT cooling tube. Install the bolts, washers and nuts.
(20) TORQUE the bolts to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
. (21) If removed, install the LPTACC tube as follows:
(a) Remove the protective covers from the open ends of the LPTACC tube and the open end of the LPTACC valve.
(b) Ensure that the piston ring is installed on the aft end of the LPTACC tube.
(c) Carefully engage the aft end of the LPTACC tube in the LPTACC air manifold.
(d) Attach the forward end of the LPTACC tube to the LPTACC valve with the clamp assembly. Hand tighten the nut on the clamp assembly.
(e) Apply a thin layer of graphite grease (Material No.CP2101) to the threads and friction surfaces of the bolt.
(f) Attach the LPTACC tube to the support bracket assembly at the fuel nozzle in position 6 with bolt, nut and washer.
(g) TORQUE the nut to between 110 and 98 lbf.in (1.24 and 1.11 m.daN )
. (h) TORQUE the nut on the clamp assembly to between 53 and 47 lbf.in (0.60 and 0.53 m.daN )
. (22) If removed, install the start bleed tube as follows:
(a) Remove the protective covers from the open ends of the start bleed tube, the open pad of the combustion case and the open port of the RACSB valve.
(b) Apply a thin layer of graphite grease (Material No.CP2101) to the threads and friction surfaces of the bolts.
(c) Install a serviceable seal on the combustion case pad. Align the holes in the seal with the holes in the pad.
(d) Put the start bleed tube in position on the combustion case pad. Temporarily install the bolts. Do not torque the bolts at this time.
(e) Install a serviceable gasket between the end of the start bleed tube and the RACSB valve.
(f) Install the bolts that attach the start bleed tube to the RACSB valve.
(g) TORQUE the bolts that attach the start bleed tube to the combustion case pad to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
. (h) TORQUE the bolts that attach the start bleed tube to the RACSB valve to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
. (i) Safety the bolts with
(j) Install the bolts, strap clamp, washers (350) and nuts that attach the start bleed tube to the start bleed tube bracket.
(k) TORQUE the bolts to between 70 and 55 lbf.in (0.79 and 0.62 m.daN )
. (23) If removed, install the strap clamps that attach the LPT cooling tubes, to the LPT cooling brackets at fuel nozzles in positions 3, 8, 13, and 18 as follows:
(a) Apply a thin layer of graphite grease (Material No.CP2101) to the threads and friction surfaces of the bolts.
(b) Install the bolts, strap clamps, washers and nuts on the LPT cooling brackets at the nozzle.
(24) If removed or displaced, install the ignition leads and spark igniters as follows:
(a) Install the left ignition lead into the clip on the support bracket at the fuel nozzle in position 11.
(25) If removed, install the right ignition lead into the hinged clamps on the core engine. Turn the attachment bolt of the hinged clamp a quarter of a turn to engage the locking feature, and continue to torque until the ignition lead no longer moves in the clamp .
(26) Remove protective covers and install the spark igniter (Ref. AMM TASK 74-21-30-400-002).
(a) If removed, install the engine bleed air ducts (Ref. AMM TASK 36-11-49-400-044) or (Ref. AMM TASK 36-11-49-400-045) or (Ref. AMM TASK 36-11-49-400-046) or (Ref. AMM TASK 36-11-49-400-048).
Subtask 73-11-40-410-066-A ** ON A/C NOT FOR ALL
A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the thrust reverser doors: (Ref. AMM TASK 78-36-00-410-040)
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
(3) Remove the WARNING NOTICE(S).
Subtask 73-11-40-440-058-A ** ON A/C NOT FOR ALL Subtask 73-11-40-710-058-A ** ON A/C NOT FOR ALL Subtask 73-11-40-410-067-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the thrust reverser doors: (Ref. AMM TASK 78-36-00-410-040)
(a) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(b) FOR [1000EM2] (ENGINE-2)
461AL 462AR
(3) Remove the WARNING NOTICE(S).
Fuel Nozzle Arrangement Pre SB CFM56-5B 72-181