DOC AIRBUS | AMM A320FRemoval of the Fuel Nozzle for SAC Engines [CFMB]
TASK 73-11-40-000-002-A
Removal of the Fuel Nozzle for SAC Engines
1. Reason for the Job
This TASK is applicable for SAC Engines.
There are 20 fuel nozzles installed in each engine. This procedure can be used to remove 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 73-11-40-941-053-A ** ON A/C NOT FOR ALL
Subtask 73-11-40-020-052-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 02:57:55 UTC
Removal of the Fuel Nozzle for SAC Engines
1. Reason for the Job
This TASK is applicable for SAC Engines.
There are 20 fuel nozzles installed in each engine. This procedure can be used to remove one or more of the fuel nozzles.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE |
| No specific | AR | CONTAINER 1 L (1/4 USGAL) |
| No specific | AR | COVER - PROTECTION |
| No specific | AR | PLIERS - JAWED, SOFT |
| No specific | AR | WARNING NOTICE(S) |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.CP2691) | penetrant |
| 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 |
|---|---|---|
| 150 | O-RING | AIPC 73-11-40-03-010 |
| 140 | O-RING | AIPC 73-11-40-03-020 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 36-11-49-000-044-A | Removal of the High Pressure Tee Duct |
| TASK 36-11-49-000-045-A | Removal of the Lower High Pressure Duct |
| TASK 36-11-49-000-046-A | Removal of the Upper High Pressure Duct |
| TASK 36-11-49-000-048-A | Removal of the Fifth Stage Elbow Duct |
| TASK 71-13-00-010-040-B | Opening of the Fan Cowl Doors |
| TASK 72-00-00-200-025-A | Over-Serviceable-Limit Extensions |
| TASK 72-00-00-200-025-A-01 | Over-Serviceable-Limit Extensions |
| TASK 72-42-00-290-041-A | Borescope Inspection of the Combustion Chamber Liners and Dome Area (SAC engine) |
| TASK 72-42-00-290-041-A-01 | Borescope Inspection of the Combustion Chamber Liners and Dome Area (DAC engine NON /P only) |
| TASK 72-42-00-290-041-A-02 | Borescope Inspection of the Combustion Chamber Liners and Dome Area (DAC engine /P only) |
| TASK 74-21-10-000-002-A | Removal of the Right Ignition Lead |
| TASK 74-21-20-000-002-A | Removal of the Left Ignition Lead |
| TASK 74-21-30-000-002-A | Removal of the Spark Igniter |
| 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 |
Fuel Nozzle ArrangementSubtask 73-11-40-941-053-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) 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.
(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(S) to tell persons not to energize the FADEC 1(2).
Subtask 73-11-40-010-057-A ** ON A/C NOT FOR ALL (1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) 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.
(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(S) to tell persons not to energize the FADEC 1(2).
B. Get Access
(1) Open the fan cowl doors: (Ref. AMM TASK 71-13-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.
Subtask 73-11-40-040-054-A ** ON A/C NOT FOR ALL Subtask 73-11-40-010-059-A ** ON A/C NOT FOR ALL (1) Open the fan cowl doors: (Ref. AMM TASK 71-13-00-010-040)
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position.
D. Open the thrust-reserver doors: (Ref. AMM TASK 78-36-00-010-040)
(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR
4. Procedure(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR
Subtask 73-11-40-020-052-A ** ON A/C NOT FOR ALL
A. Removal of the Fuel Nozzle:
(3) Apply a small amount of penetrant (Material No.CP2691) to the bolts (10), (50) that attach the fuel nozzle(s) to be removed to the combustion case. Permit the Liquid Wrench to soak for approximately 5 minutes.
(4) Put a CONTAINER 1 L (1/4 USGAL) below the fuel nozzle(s) to be removed to catch any fuel leakage.
(5) To remove the fuel nozzles, start at the steps shown on the following reference table:
(6) Get access to the fuel nozzles in positions 1, 15, 16, 17, 19 and 20 as follows:
(a) Remove the engine bleed air ducts, if necessary, to get access to fuel nozzle, if necessary, to get access to the fuel nozzles in positions 1, 15, 16, 17, 19 and 20 (Ref. AMM TASK 36-11-49-000-044) or (Ref. AMM TASK 36-11-49-000-045) or (Ref. AMM TASK 36-11-49-000-046) or (Ref. AMM TASK 36-11-49-000-048).
(b) To remove fuel nozzles in positions 1, 15, 16, 19 and 20, go to step 4.B.
(c) Remove the bolts (10) that attach the bracket (110) to the nozzle in position 17 and move the bracket away from the nozzle.
(b) To remove the fuel nozzles in positions 9, 10 and 14, go to step 4.B.
(c) Remove the LPT cooling brackets at fuel nozzles in positions 3, 8, 13 and 18 as follows:
1 Remove the bolts (450), (400), (220), (160), strap clamp (460), (390), (210), (170), washers (430), (380), (240), (190), and nuts (420, 370, 250, 200) that attach the LPT cooling tube (440), (410), (230), (180) to the LPT cooling bracket (60), (80), (90), (100) at the nozzle.
2 Remove the bolts (10) that attach the LPT cooling bracket (60), (90) to the nozzle in position 3 and 13 and remove the bracket (60), (90).
3 At position 13, disengage the ignition lead from the clamp on the LPT cooling bracket (90).
4 Remove the bolts (10), that attach the LPT cooling bracket (80), (100) to the hinge bracket and the nozzle in position 8 and 18 and remove the bracket (80), (100).
5 To remove fuel nozzles in positions 3, 8, 13 and 18, go to step 4.B.
(d) To get access to the nozzle in position 12, remove the start bleed tube (280) as follows:
1 Remove the bolts (330), strap clamp (340), washers (350), and nuts (360) that attach the start bleed tube (280) to the start bleed tube bracket (320).
2 Cut and remove the lockwire from the bolts (300) that attach the end of the start bleed tube (280) to the combustion case pad. Remove the bolts (300).
3 Remove the seal (310) from between the end of the start bleed tube (280) and the combustion case pad.
4 Remove the bolts (290) from the end of the start bleed tube (280) and the HPTACC valve (260).
5 Remove the gasket (270) from between the end of the start bleed tube (280) and the RACSB valve (260).
6 Remove the start bleed tube (280).
7 Install COVER - PROTECTION on the open ends of the start bleed tube (270), the open pad of the combustion case and the open port of the RACSB valve.
(e) To remove the fuel nozzle in position 12, go to step 4.B.
(8) Get access to the fuel nozzles in position 6 and 7 as follows:
(a) Remove the LPTACC tube (470) as follows:
1 Remove the bolt (660), washer (640), and nut (630) that attach the LPTACC tube (470) to the support bracket assembly (70) at the fuel nozzle in position 6.
2 Loosen the nut and remove the clamp assembly (480) from the forward end of the LPTACC tube (470).
3 Carefully pull the LPTACC tube (470) forward to disengage it from the LPTACC air manifold and remove the tube (470) and piston ring (650).
4 Install COVER - PROTECTION on the open ends of the LPTACC tube (470) and the open end of the LPTACC valve.
(b) To remove the fuel nozzle in position 7, go to step 4.B.
(c) Remove the HPTACC manifold (490) as follows:
2 Remove the bolts (540), strap clamp (530), washers (510), and nuts (500) that attach the HPTACC manifold (490) to the bracket (520) at the combustion case end of the lower RH LPT cooling tube (410).
3 Remove the bolts (600) and strap clamp (610) that attach the HPTACC manifold (490) to the bracket (620) between flange R and flange S.
4 Remove the bolts (790), strap clamp (780), washers (770), and nuts (760) that attach the HPTACC manifold (490) to the support bracket (70) at the fuel nozzle in position 6.
5 Remove the V-clamp (740) and the seal (750) between the large forward port of the HPTACC manifold (490) and the discharge port of the HPTACC valve at 3 o'clock.
6 Remove the bolts (720), nuts (690), gaskets (700) and plate (710) between the forward 4-bolt pad of the HPTACC manifold (490) and the air manifold (730) at 3 o'clock.
7 Cut and remove the lockwire from the bolts (670) that attach the end of the HPTACC manifold (490) to the lower combustion case 3-bolt pad at 7 o'clock. Remove the bolts (670).
8 Remove the C-seal (680) from between the end of the HPTACC manifold (490) and the lower combustion case pad.
9 Cut and remove the lockwire from the bolts (670) that attach the end of the HPTACC manifold (490) to the upper combustion case 3-bolt pad at 1 o'clock. Remove the bolts (670).
10 Remove the C-seal (680) from between the end of the HPTACC manifold (490) and the upper combustion case pad.
11 Remove the HPTACC manifold (490).
12 Install COVER - PROTECTION on the open ends of the HPTACC manifold (490), the open pads of the combustion case and the open ports of the HPTACC valve.
(d) Remove the bolts (10) that attach the support bracket (70) to the hinge bracket and the fuel nozzle in position 6.
(e) To remove the fuel nozzle in position 6, go to step 4.B.
(9) Remove the bracket at the fuel nozzle in position 2 as follows.
(a) Remove the bolts (10) that attach the bracket (800) to the hinge bracket and the fuel nozzle in position 2 and move the bracket (800) away from the nozzle.
Pre CFM SB 73-0044
Subtask 73-11-40-020-054-A ** ON A/C NOT FOR ALL WARNING:
BE CAREFUL NOT TO GET AIRCRAFT FUEL IN YOUR MOUTH OR IN YOUR EYES.
IF YOU GET FUEL ON YOUR SKIN OR ON YOUR CLOTHES, FLUSH IT IMMEDIATELY WITH WATER.
IF NECESSARY, GET MEDICAL HELP.
AIRCRAFT FUEL IS POISONOUS.
(1) Determine the position number of the fuel nozzle(s) to be removed. 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. NOTE: At some positions, you must remove some external engine hardware to get access to the fuel nozzle(s) to be removed.
NOTE: At some positions, manifold hinge brackets or engine plumbing brackets are installed with the fuel nozzle. It is necessary to remove these brackets for removal of the fuel nozzle. Identify the bolts and brackets by position number and keep the bolts and the brackets for each nozzle position together to ease the installation of the fuel nozzle.
(2) Cut and remove the lockwire from the bolts (10, 50) that attach the fuel nozzle(s) to be removed to the combustion case. (3) Apply a small amount of penetrant (Material No.CP2691) to the bolts (10), (50) that attach the fuel nozzle(s) to be removed to the combustion case. Permit the Liquid Wrench to soak for approximately 5 minutes.
(4) Put a CONTAINER 1 L (1/4 USGAL) below the fuel nozzle(s) to be removed to catch any fuel leakage.
(5) To remove the fuel nozzles, start at the steps shown on the following reference table:
| FUEL NOZZLE POS. NO. | O'CLOCK POSITION ALF | HARDWARE TO REMOVE | START AT STEP |
|---|---|---|---|
| 1 | 12:00 | Engine bleed air duct | 4.A (6) |
| 2 | 12:30 | Bracket Hinge bracket (move) | 4.A (9) |
| 4 | 2:00 | Hinge bracket (move) | 4.B. |
| 5 | 2:30 | None | 4.B. |
| 6 | 3:00 | LPTACC tube Support bracket assembly Hinge bracket (move) | 4.A (8) |
| 7 | 3:30 | LPTACC tube | 4.A (8) |
| 8 | 4:00 | RH Spark igniter RH Ignition lead (move) LPT cooling bracket Hinge bracket (move) | 4.A (7) |
| 9 | 5:00 | RH Spark igniter RH Ignition lead (move) | 4.A (7) |
| 10 | 5:30 | RH Spark igniter RH Ignition lead (move) | 4.A (7) |
| 11 | 6:00 | None | 4.B. |
| 12 | 6:30 | LH Spark igniter LH Ignition lead (move) Start bleed tube Hinge bracket (move) | 4.A (7) |
| 13 | 7:00 | LH Spark igniter LH Ignition lead (move) LPT cooling bracket | 4.A (7) |
| 14 | 8:00 | LH Spark igniter LH Ignition lead (move) Hinge bracket (move) | 4.A (7) |
| 15 | 8:30 | Engine bleed air duct | 4.A (6) |
| 16 | 9:00 | Engine bleed air duct | 4.A (6) |
| 17 | 9:30 | Engine bleed air duct Bracket | 4.A (6) |
| 18 | 10:00 | LPT cooling bracket Hinge bracket (move) | 4.A (7) |
| 19 | 10:30 | Engine bleed air duct | 4.A (6) |
| 20 | 11:00 | Engine bleed air duct Hinge bracket (move) | 4.A (6) |
(a) Remove the engine bleed air ducts, if necessary, to get access to fuel nozzle, if necessary, to get access to the fuel nozzles in positions 1, 15, 16, 17, 19 and 20 (Ref. AMM TASK 36-11-49-000-044) or (Ref. AMM TASK 36-11-49-000-045) or (Ref. AMM TASK 36-11-49-000-046) or (Ref. AMM TASK 36-11-49-000-048).
(b) To remove fuel nozzles in positions 1, 15, 16, 19 and 20, go to step 4.B.
(c) Remove the bolts (10) that attach the bracket (110) to the nozzle in position 17 and move the bracket away from the nozzle.
NOTE: It should not be necessary to remove the wires attached to the bracket (110).
(d) To remove the fuel nozzle in position 17, go to step 4.B. CAUTION:
ENSURE THAT THE SPARK IGNITER IS PROPERLY CAPPED AND MOVED TO A SECURE AND PROTECTED LOCATION BEFORE PROCEEDING.
(7) Get access to the fuel nozzles in positions 3, 8, 9, 10, 12, 13, 14, and 18 as follows: NOTE: Disengage the ignition lead from clamps, if necessary, to get access to the nozzle to be removed.
(a) Remove the spark igniter from the combustion case and move the ignition lead away from the fuel nozzle, if necessary, to get access to the fuel nozzles in positions 8, 9, 10, 12, 13 and 14 (Ref. AMM TASK 74-21-10-000-002) or (Ref. AMM TASK 74-21-20-000-002) or (Ref. AMM TASK 74-21-30-000-002)(b) To remove the fuel nozzles in positions 9, 10 and 14, go to step 4.B.
(c) Remove the LPT cooling brackets at fuel nozzles in positions 3, 8, 13 and 18 as follows:
1 Remove the bolts (450), (400), (220), (160), strap clamp (460), (390), (210), (170), washers (430), (380), (240), (190), and nuts (420, 370, 250, 200) that attach the LPT cooling tube (440), (410), (230), (180) to the LPT cooling bracket (60), (80), (90), (100) at the nozzle.
2 Remove the bolts (10) that attach the LPT cooling bracket (60), (90) to the nozzle in position 3 and 13 and remove the bracket (60), (90).
3 At position 13, disengage the ignition lead from the clamp on the LPT cooling bracket (90).
4 Remove the bolts (10), that attach the LPT cooling bracket (80), (100) to the hinge bracket and the nozzle in position 8 and 18 and remove the bracket (80), (100).
5 To remove fuel nozzles in positions 3, 8, 13 and 18, go to step 4.B.
(d) To get access to the nozzle in position 12, remove the start bleed tube (280) as follows:
1 Remove the bolts (330), strap clamp (340), washers (350), and nuts (360) that attach the start bleed tube (280) to the start bleed tube bracket (320).
2 Cut and remove the lockwire from the bolts (300) that attach the end of the start bleed tube (280) to the combustion case pad. Remove the bolts (300).
3 Remove the seal (310) from between the end of the start bleed tube (280) and the combustion case pad.
4 Remove the bolts (290) from the end of the start bleed tube (280) and the HPTACC valve (260).
5 Remove the gasket (270) from between the end of the start bleed tube (280) and the RACSB valve (260).
6 Remove the start bleed tube (280).
7 Install COVER - PROTECTION on the open ends of the start bleed tube (270), the open pad of the combustion case and the open port of the RACSB valve.
(e) To remove the fuel nozzle in position 12, go to step 4.B.
(8) Get access to the fuel nozzles in position 6 and 7 as follows:
(a) Remove the LPTACC tube (470) as follows:
1 Remove the bolt (660), washer (640), and nut (630) that attach the LPTACC tube (470) to the support bracket assembly (70) at the fuel nozzle in position 6.
2 Loosen the nut and remove the clamp assembly (480) from the forward end of the LPTACC tube (470).
3 Carefully pull the LPTACC tube (470) forward to disengage it from the LPTACC air manifold and remove the tube (470) and piston ring (650).
4 Install COVER - PROTECTION on the open ends of the LPTACC tube (470) and the open end of the LPTACC valve.
(b) To remove the fuel nozzle in position 7, go to step 4.B.
(c) Remove the HPTACC manifold (490) as follows:
CAUTION:
BE CAREFUL NOT TO CUT OR DENT THE INSULATION FOIL THAT COVERS THE HPTACC MANIFOLD.
ENGINE EFFICIENCY COULD BE AFFECTED.
1 Remove the bolts (550), strap clamp (560), washers (580), and nuts (590) that attach the HPTACC manifold (490) to the bracket (570) at the combustion case end of the upper RH LPT cooling tube (440). 2 Remove the bolts (540), strap clamp (530), washers (510), and nuts (500) that attach the HPTACC manifold (490) to the bracket (520) at the combustion case end of the lower RH LPT cooling tube (410).
3 Remove the bolts (600) and strap clamp (610) that attach the HPTACC manifold (490) to the bracket (620) between flange R and flange S.
4 Remove the bolts (790), strap clamp (780), washers (770), and nuts (760) that attach the HPTACC manifold (490) to the support bracket (70) at the fuel nozzle in position 6.
5 Remove the V-clamp (740) and the seal (750) between the large forward port of the HPTACC manifold (490) and the discharge port of the HPTACC valve at 3 o'clock.
6 Remove the bolts (720), nuts (690), gaskets (700) and plate (710) between the forward 4-bolt pad of the HPTACC manifold (490) and the air manifold (730) at 3 o'clock.
7 Cut and remove the lockwire from the bolts (670) that attach the end of the HPTACC manifold (490) to the lower combustion case 3-bolt pad at 7 o'clock. Remove the bolts (670).
8 Remove the C-seal (680) from between the end of the HPTACC manifold (490) and the lower combustion case pad.
9 Cut and remove the lockwire from the bolts (670) that attach the end of the HPTACC manifold (490) to the upper combustion case 3-bolt pad at 1 o'clock. Remove the bolts (670).
10 Remove the C-seal (680) from between the end of the HPTACC manifold (490) and the upper combustion case pad.
11 Remove the HPTACC manifold (490).
12 Install COVER - PROTECTION on the open ends of the HPTACC manifold (490), the open pads of the combustion case and the open ports of the HPTACC valve.
(d) Remove the bolts (10) that attach the support bracket (70) to the hinge bracket and the fuel nozzle in position 6.
(e) To remove the fuel nozzle in position 6, go to step 4.B.
(9) Remove the bracket at the fuel nozzle in position 2 as follows.
(a) Remove the bolts (10) that attach the bracket (800) to the hinge bracket and the fuel nozzle in position 2 and move the bracket (800) away from the nozzle.
NOTE: It should not be necessary to remove the wires attached to the bracket (800).
(b) To remove the fuel nozzle in position 2, go to step 4.B. Pre CFM SB 73-0044
B. Removal of the Fuel Nozzle:
(2) Cut and remove the lockwire on the fuel nozzle drain shroud connector. Loosen the connector. If necessary, use PLIERS - JAWED, SOFT to loosen the connector.
(3) Move the shroud connector rearward.
(4) Cut and remove the lockwire on the fuel supply tube coupling nut. Disconnect the fuel supply tube coupling nut from the fuel nozzle.
(5) Remove and discard the O-ring (140) from the shroud.
(6) Remove and discard the O-ring (150) from the fuel nozzle.
(7) Examine the fuel nozzle to make sure the conical inlet strainer (120) and the retaining ring (130) are installed. Clean, if necessary, but do not remove.
(9) Remove the bolts (50) that attach the fuel nozzle to the combustion case.
(10) Move the fuel nozzle forward to disengage the tip of the nozzle from the combustor swirl cup.
(11) Turn the nozzle clockwise while you move the top of the nozzle towards the combustion case.
(12) Remove the fuel nozzle and note the position number.
(13) Remove the seal (40) and the seal ring assembly from between the nozzle and the combustion case.
(14) Discard the seal (40).
(15) Inspect the seal ring assembly (30) and any other gaskets or seals removed for damage.
(16) Keep the seal ring assembly (30) and other gaskets or seals if there is no damage. Discard the seals and gaskets that are damaged.
(17) Visually inspect the fuel nozzle wear sleeves.
(a) If wear sleeves are dislodged, they are not serviceable. Replace fuel nozzles and borescope inspect for down stream damage (Ref. AMM TASK 72-42-00-290-041) or see Over-Serviceable-Limits extensions (Ref. AMM TASK 72-00-00-200-025).
(b) If wear sleeves have 4 interrupted weld design, they are not serviceable. Replace the fuel nozzles or see Over-Serviceable-Limits extensions (Ref. AMM TASK 72-00-00-200-025).
(18) Install COVER - PROTECTION on the fuel nozzle, the combustion case pads, and fuel lines.
(19) Make a record of the part number, serial number and the position of the nozzles that you removed.
END of PRE CFM SB 73-0044
Post CFM SB 73-0044
(20) Remove the lockwire.
(b) Cut and remove the lockwire on the fuel supply tube coupling nut. Disconnect the fuel supply tube coupling nut from the fuel nozzle.
(21) Remove and discard the AIPC 73-11-40-03-020 O-RING (140) from the shroud.
(22) Remove and discard the AIPC 73-11-40-03-010 O-RING (150) from the fuel nozzle.
(23) Examine the fuel nozzle to make sure the conical inlet strainer (120) and the retaining ring (130) are installed. Clean, if necessary, but do not remove.
(24) The conical inlet strainer is installed only in the parker-hannifin fuel nozzles.
(25) If a hinge bracket is installed on the fuel nozzle, remove the bolts (10) that attach the hinge bracket (20) to the fuel nozzle and move the bracket away from the nozzle.
(26) Remove the bolts (50) that attach the fuel nozzle to the combustion case.
(27) Move the fuel nozzle forward to disengage the tip of the nozzle from the combustor swirl cup.
(28) Turn the nozzle clockwise while you move the top of the nozzle towards the combustion case.
(29) Remove the fuel nozzle and note the position number.
(30) Remove the seal (40) and the seal ring assembly from between the nozzle and the combustion case.
(31) Discard the seal (40).
(32) Do an inspection of the seal ring assembly (30) and any other gaskets or seals removed for damage.
(33) Keep the seal ring assembly (30) and other gaskets or seals if there is no damage. Discard the seals and gaskets that are damaged.
(34) Do a visual inspection of the fuel nozzle wear sleeves.
(a) If wear sleeves are dislodged, they are not serviceable. Replace fuel nozzles and do a borescope inspection for downstream damage (Ref. AMM TASK 72-42-00-290-041) or see over-serviceable-limits extensions (Ref. AMM TASK 72-00-00-200-025).
(b) If wear sleeves have 4 interrupted weld design, they are not serviceable. Replace the fuel nozzles or see over-serviceable-limits extensions (Ref. AMM TASK 72-00-00-200-025).
(35) Install COVER - PROTECTION on the fuel nozzle, the combustion case pads, and fuel lines.
(36) Make a record of the part number, serial number and the position of the nozzles that you removed.
WARNING:
BE CAREFUL NOT TO GET AIRCRAFT FUEL IN YOUR MOUTH OR IN YOUR EYES.
IF YOU GET FUEL ON YOUR SKIN OR ON YOUR CLOTHES, FLUSH IT IMMEDIATELY WITH WATER.
IF NECESSARY, GET MEDICAL HELP.
AIRCRAFT FUEL IS POISONOUS.
(1) Disconnect the fuel nozzle drain tube from the side of the drain shroud. (2) Cut and remove the lockwire on the fuel nozzle drain shroud connector. Loosen the connector. If necessary, use PLIERS - JAWED, SOFT to loosen the connector.
(3) Move the shroud connector rearward.
CAUTION:
DO NOT MOVE THE COUPLING SHROUD REARWARD TOO FAR TO GET ACCESS TO THE COUPLING NUT OF THE FUEL SUPPLY LINE. THIS CAN PREVENT DAMAGE TO THE COUPLING SHROUD.
(a) Move the shroud connector rearward until you can get access to the coupling nut of the fuel supply line. (4) Cut and remove the lockwire on the fuel supply tube coupling nut. Disconnect the fuel supply tube coupling nut from the fuel nozzle.
(5) Remove and discard the O-ring (140) from the shroud.
(6) Remove and discard the O-ring (150) from the fuel nozzle.
(7) Examine the fuel nozzle to make sure the conical inlet strainer (120) and the retaining ring (130) are installed. Clean, if necessary, but do not remove.
NOTE: The conical inlet strainer is installed only in the PARKER-HANNIFIN fuel nozzles.
(8) If a hinge bracket is installed on the fuel nozzle, remove the bolts (10) that attach the hinge bracket (20) to the fuel nozzle and move the bracket away from the nozzle. (9) Remove the bolts (50) that attach the fuel nozzle to the combustion case.
(10) Move the fuel nozzle forward to disengage the tip of the nozzle from the combustor swirl cup.
(11) Turn the nozzle clockwise while you move the top of the nozzle towards the combustion case.
(12) Remove the fuel nozzle and note the position number.
(13) Remove the seal (40) and the seal ring assembly from between the nozzle and the combustion case.
(14) Discard the seal (40).
(15) Inspect the seal ring assembly (30) and any other gaskets or seals removed for damage.
(16) Keep the seal ring assembly (30) and other gaskets or seals if there is no damage. Discard the seals and gaskets that are damaged.
(17) Visually inspect the fuel nozzle wear sleeves.
(a) If wear sleeves are dislodged, they are not serviceable. Replace fuel nozzles and borescope inspect for down stream damage (Ref. AMM TASK 72-42-00-290-041) or see Over-Serviceable-Limits extensions (Ref. AMM TASK 72-00-00-200-025).
(b) If wear sleeves have 4 interrupted weld design, they are not serviceable. Replace the fuel nozzles or see Over-Serviceable-Limits extensions (Ref. AMM TASK 72-00-00-200-025).
(18) Install COVER - PROTECTION on the fuel nozzle, the combustion case pads, and fuel lines.
(19) Make a record of the part number, serial number and the position of the nozzles that you removed.
END of PRE CFM SB 73-0044
Post CFM SB 73-0044
(20) Remove the lockwire.
WARNING:
USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
(a) Cut and remove the lockwire on the shroud connector and move the shroud connector rearward until you can get access to the coupling nut of the fuel supply line. (b) Cut and remove the lockwire on the fuel supply tube coupling nut. Disconnect the fuel supply tube coupling nut from the fuel nozzle.
(21) Remove and discard the AIPC 73-11-40-03-020 O-RING (140) from the shroud.
(22) Remove and discard the AIPC 73-11-40-03-010 O-RING (150) from the fuel nozzle.
(23) Examine the fuel nozzle to make sure the conical inlet strainer (120) and the retaining ring (130) are installed. Clean, if necessary, but do not remove.
(24) The conical inlet strainer is installed only in the parker-hannifin fuel nozzles.
(25) If a hinge bracket is installed on the fuel nozzle, remove the bolts (10) that attach the hinge bracket (20) to the fuel nozzle and move the bracket away from the nozzle.
(26) Remove the bolts (50) that attach the fuel nozzle to the combustion case.
(27) Move the fuel nozzle forward to disengage the tip of the nozzle from the combustor swirl cup.
(28) Turn the nozzle clockwise while you move the top of the nozzle towards the combustion case.
(29) Remove the fuel nozzle and note the position number.
(30) Remove the seal (40) and the seal ring assembly from between the nozzle and the combustion case.
(31) Discard the seal (40).
(32) Do an inspection of the seal ring assembly (30) and any other gaskets or seals removed for damage.
(33) Keep the seal ring assembly (30) and other gaskets or seals if there is no damage. Discard the seals and gaskets that are damaged.
(34) Do a visual inspection of the fuel nozzle wear sleeves.
(a) If wear sleeves are dislodged, they are not serviceable. Replace fuel nozzles and do a borescope inspection for downstream damage (Ref. AMM TASK 72-42-00-290-041) or see over-serviceable-limits extensions (Ref. AMM TASK 72-00-00-200-025).
(b) If wear sleeves have 4 interrupted weld design, they are not serviceable. Replace the fuel nozzles or see over-serviceable-limits extensions (Ref. AMM TASK 72-00-00-200-025).
(35) Install COVER - PROTECTION on the fuel nozzle, the combustion case pads, and fuel lines.
(36) Make a record of the part number, serial number and the position of the nozzles that you removed.