DOC AIRBUS | AMM A320FInstallation of the ADIRU Mount with Alignment Tools
TASK 34-12-51-400-001-A
Installation of the ADIRU Mount with Alignment Tools
Use this procedure as an alternative to the nominal procedure (Installation of the ADIRU mount without alignment tools) when one of the conditions that follow occurs:
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 34-12-51-210-051-A
Subtask 34-12-51-210-052-B ** ON A/C NOT FOR ALL
(1) Assemble the tool in the aircraft avionics compartment.
(a) Remove and discard the cotter pins (3).
(b) Remove the nuts (4) and the washers (5).
(c) Remove and install the three screws (7) in the reverse direction one by one, to always have a minimum of three screws installed.
(e) If you cannot remove or install one screw (7) or (8) because of the load on the NLG:
(g) Install the support shafts (11) on the pintles (1) of the NLG.
(h) Install the washers (5) and the nuts (4).
(i) Install the new AIPC 32-21-01-01-010 COTTER PINS (3) or AIPC 32-21-81-01-060 COTTER PINS (3).
(j) Assemble the three parts of the tool (14) with the bolts (12). Make sure that they are installed on the correct side.
(m) Install and tighten the knurled nuts (15) on each support shaft (11).
(3) Heading Check
(a) Manually push the four pins (13) into the inspection bushes of the tool (14). The pins (13) must go easily in the attachment holes of the ADIRU mount support.
(a) Remove the four pins (13).
(b) Remove the knurled nuts (15).
(c) Remove the tool (14) and the shim (16) from the support shafts (11).
(d) Remove the bolts (12) and disassemble the three parts of the tool (14).
(e) Remove and discard the cotter pins (3).
(f) Remove the nuts (4) and the washers (5).
(g) Remove the support shafts (11) from the pintles (1) of the NLG.
(h) Clean the flanges (9) with Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) and dry them with filtered compressed air.
(i) Install new AIPC 32-21-01-01-075 PACKINGS (10) or AIPC 32-21-81-01-120 PACKINGS (10) and new AIPC 32-21-01-01-060 PACKINGS (6) or AIPC 32-21-81-01-100 O-RINGS (6) on the flanges (9).
(j) Put the flanges (9) in position.
(k) Install the screw (8) that was not installed in the reverse direction.
(l) Remove then install the three screws (7) in their initial direction and one by one to always have a minimum of three screws installed.
(o) TORQUE the nuts (4) to between 1.35 and 1.2 m.daN (119.47 and 106.19 lbf.in )
.
(p) From the nose gear compartment, visually make sure that the swivel bearings (2) touch correctly the nose gear well (no play).
(q) Install new AIPC 32-21-01-01-010 COTTER PINS (3) or AIPC 32-21-81-01-060 COTTER PINS (3).
Subtask 34-12-51-210-053-A ** ON A/C NOT FOR ALL
(a) Remove and discard the cotter pins (10).
(b) Remove the nuts (9) and the washers (8).
(c) Remove the four bolts (4) and install the new bolts (7) in the opposite direction. Install one new bolt (7) each time you remove one of the four bolts (4). This is to make sure that you always have a minimum of three bolts installed and the bearing will not turn.
(d) If you cannot remove one bolt (4) or install one bolt (7) because of the load on the NLG:
1 Lightly release the load on the NLG with the hydraulic jack (Ref. AMM TASK 07-12-00-582-001) and try again.
(f) Install the support shafts (16) on the pintles (1) of the NLG.
(g) Install the washers (17) and the nuts (18).
(h) Assemble the tool (13) and the arms (15) and (12) with the bolts (11). Make sure that the arms are installed on the correct side.
1 Tilt the top of the tool (13) forward to engage it in the support shafts (16).
2 Let the tool (13) turn down until it touches the surfaces of the Air Data/Inertial Reference Unit (ADIRU) mount support.
(j) Install the shim (19) between the right arm (12) and the right support shaft (16) to prevent movement in the Y-axis (roll) direction.
(k) Install and tighten the knurled nuts (20) on each support shaft (16).
(3) Do a check of the heading:
(a) Manually push the four pins (14) into the inspection bushes of the tool (13). The pins (14) must engage easily in the attachment holes of the ADIRU mount support.
(a) Remove the four pins (14).
(b) Remove the knurled nuts (20).
(c) Remove the arms (15) and (12) and the shim (19) from the support shafts (16).
(d) Remove the bolts (11) and disassemble the arms (15) and (12) and the tool (13).
(e) Remove the nuts (18) and the washers (17).
(f) Remove the support shafts (16) from the pintles (1) of the NLG.
(g) Clean the flanges (3) with Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) and dry them with filtered compressed air.
(h) Install the new AIPC 32-21-01-01-075 ORING (6) or AIPC 32-21-81-01-120 ORING (6) and the new AIPC 32-21-01-01-060 ORING (5) or AIPC 32-21-81-01-100 ORING (5) on the flanges (3).
(i) Put the flanges (3) in position.
(j) Remove the new bolts (7) then install the four bolts (4) in their initial direction. Install one of the four bolts (4) each time you remove one of the new bolts (7). This is to make sure that you always have a minimum of three bolts installed and that the bearing will not turn.
(k) If you cannot remove one bolt (7) or install one bolt (4) because of the load on the NLG:
1 Lightly release the load on the NLG with the hydraulic jack (Ref. AMM TASK 07-12-00-582-001) and try again.
(m) Tighten the nuts (9).
(n) From the nose gear compartment, visually make sure that the swivel bearings (2) touch correctly the nose gear.
(o) Install the new AIPC 32-21-01-01-010 PIN (10) or AIPC 32-21-81-01-060 PIN (10).
Subtask 34-12-51-210-053-B ** ON A/C NOT FOR ALL
(a) Remove and discard the cotter pins (10).
(b) Remove the nuts (9) and the washers (8).
(c) Remove the four bolts (4) and install the new bolts (7) in the opposite direction. Install one new bolt (7) each time you remove one of the four bolts (4). This is to make sure that you always have a minimum of three bolts installed and the bearing will not turn.
(d) If you cannot remove one bolt (4) or install one bolt (7) because of the load on the NLG:
1 Lightly release the load on the NLG with the hydraulic jack (Ref. AMM TASK 07-12-00-582-001) and try again.
(f) Install the support shafts (16) on the pintles (1) of the NLG.
(g) Install the washers (17) and the nuts (18).
(h) Assemble the tool (13) and the arms (15) and (12) with the bolts (11). Make sure that the arms are installed on the correct side.
1 Tilt the top of the tool (13) forward to engage it in the support shafts (16).
2 Let the tool (13) turn down until it touches the surfaces of the Air Data/Inertial Reference Unit (ADIRU) mount support.
(j) Install the shim (19) between the right arm (12) and the right support shaft (16) to prevent movement in the Y-axis (roll) direction.
(k) Install and tighten the knurled nuts (20) on each support shaft (16).
(3) Do a check of the heading:
(a) Manually push the four pins (14) into the inspection bushes of the tool (13). The pins (14) must engage easily in the attachment holes of the ADIRU mount support.
(a) Remove the four pins (14).
(b) Remove the knurled nuts (20).
(c) Remove the arms (15) and (12) and the shim (19) from the support shafts (16).
(d) Remove the bolts (11) and disassemble the arms (15) and (12) and the tool (13).
(e) Remove the nuts (18) and the washers (17).
(f) Remove the support shafts (16) from the pintles (1) of the NLG.
(g) Clean the flanges (3) with Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) and dry them with filtered compressed air.
(h) Install the new AIPC 32-21-01-01-075 ORING (6) or AIPC 32-21-81-01-120 ORING (6) and the new AIPC 32-21-01-01-060 ORING (5) or AIPC 32-21-81-01-100 ORING (5) on the flanges (3).
(i) Put the flanges (3) in position.
(j) Remove the new bolts (7) then install the four bolts (4) in their initial direction. Install one of the four bolts (4) each time you remove one of the new bolts (7). This is to make sure that you always have a minimum of three bolts installed and that the bearing will not turn.
(k) If you cannot remove one bolt (7) or install one bolt (4) because of the load on the NLG:
1 Lightly release the load on the NLG with the hydraulic jack (Ref. AMM TASK 07-12-00-582-001) and try again.
(m) Tighten the nuts (9).
(n) From the nose gear compartment, visually make sure that the swivel bearings (2) touch correctly the nose gear.
(o) Install the new AIPC 32-21-01-01-010 PIN (10) or AIPC 32-21-81-01-060 PIN (10).
Subtask 34-12-51-210-053-C ** ON A/C NOT FOR ALL
Subtask 34-12-51-410-051-C
[Rev.10 from 2021]
2026.04.02 06:23:06 UTC
Installation of the ADIRU Mount with Alignment Tools
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
1. Reason for the JobUse this procedure as an alternative to the nominal procedure (Installation of the ADIRU mount without alignment tools) when one of the conditions that follow occurs:
- Important damage on structure and aircraft skin between FR20 and FR24A
- Flight-crew tech-log entry during the last flight related to the IR, AFS or EFCS
- Failure detected or warning triggered during the last flight related to the IR, AFS or EFCS
- Aircraft not installed with criteria MPM 25753P4280 or SB 34-1123 which installs wiring between ADIRU3 and the DMU (attitude and true heading angles of ADIRU3 are not available)
- The criteria related to the pitch, roll or true heading in the nominal procedure are not applicable.
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | AR | ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE |
| No specific | Torque wrench: range to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in ) | |
| No specific | Torque wrench: range to between 1.14 and 1.12 m.daN (100.88 and 99.12 lbf.in ) | |
| No specific | Torque wrench: range to between 1.35 and 1.2 m.daN (119.47 and 106.19 lbf.in ) | |
| 3028000 | 1 | CLINOMETER - REPLACED BY P/N 3028011001 |
| 950-315 | 1 | DIGITAL PROTRACTOR |
| 98D34103000000 | 1 | ALIGNMENT,TOOL-IRU PLATFORM BRACKETS |
| 98D34103008000 | 2 | RIGGING TOOL FOR ADIRU RACK |
| 98D34103008001 | 2 | RIGGING TOOL ADIRU RACK |
| 98D34203000000 | 1 | ALIGNMENT,TOOL-MOUNT,ADIRU |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.08BBB1) | Non Aqueous Cleaner-- Petroleum Based - |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 120 | AVIONICS COMPARTMENT |
| 713 | MAIN DOORS |
| 714 | MAIN DOORS |
| 715 | AFT DOORS |
| 716 | AFT DOORS |
| 127BG, 713, 714, 715, 716, 822, 824 |
| FIG.ITEM | DESIGNATION | IPC-CSN |
|---|---|---|
| 10 | PIN | AIPC 32-21-01-01-010 |
| 3 | COTTER PINS | AIPC 32-21-01-01-010 |
| 5 | ORING | AIPC 32-21-01-01-060 |
| 6 | PACKINGS | AIPC 32-21-01-01-060 |
| 10 | PACKINGS | AIPC 32-21-01-01-075 |
| 6 | ORING | AIPC 32-21-01-01-075 |
| 10 | PIN | AIPC 32-21-81-01-060 |
| 3 | COTTER PINS | AIPC 32-21-81-01-060 |
| 5 | ORING | AIPC 32-21-81-01-100 |
| 6 | O-RINGS | AIPC 32-21-81-01-100 |
| 10 | PACKINGS | AIPC 32-21-81-01-120 |
| 6 | ORING | AIPC 32-21-81-01-120 |
| 2 | PEEL SHIMS | AIPC 34-11-01-14-130 |
| 2 | PEEL SHIMS | AIPC 34-11-81-11-130 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 07-11-00-581-001-A | Lifting for Aircraft Maintenance Operations |
| TASK 07-11-00-586-002-A | Lowering of the Aircraft for Maintenance Operations |
| TASK 07-12-00-582-001-A | Jacking of the Nose Landing Gear |
| TASK 08-22-00-200-001-A | Precise Leveling |
| TASK 20-28-00-912-802-A | Electrical Bonding - General Maintenance Procedure |
| TASK 20-28-00-912-803-A | Bonding Surface Preparation |
| TASK 21-26-41-400-001-A | Installation of the Check Valve |
| TASK 21-26-42-400-001-A | Installation of the Avionics Equipment Ventilation-Duct |
| TASK 21-26-43-400-003-A | Installation of the Filter Assembly |
| TASK 21-26-43-400-006-A | Installation of the Filter Assembly |
| TASK 21-26-43-400-007-A | Installation of the Filter Assembly |
| TASK 25-71-00-000-801-A | Removal of the Umbrella Assembly |
| TASK 25-71-00-400-801-A | Installation of the Umbrella Assembly |
| TASK 32-22-00-010-001-A | Nose Gear Doors - Ground Doors Opening |
| TASK 34-12-34-400-001-A | Installation of the ADIRU |
| TASK 52-41-00-010-002-A | Open the Avionics Compartment Doors for Access |
| TASK 53-12-13-000-001-A | Removal of the avionics compartment floor panels |
| TASK 53-12-13-400-001-A | Installation of the avionics compartment floor panels |
Alignment Tool - IRU Platform BracketsSubtask 34-12-51-210-051-A
A. Do the accurate aircraft leveling to put the aircraft in position to have a zero degree pitch, zero degree roll. Use the standard reference marks of the aircraft (tolerance +/- five minutes) (Ref. AMM TASK 08-22-00-200-001).
Subtask 34-12-51-010-050-B NOTE: The aircraft must stay in this position during the installation procedure.
B. Get Access
(1) Lift the aircraft with jacks (Ref. AMM TASK 07-11-00-581-001).
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position below nose gear doors.
(3) Make sure that nose gear doors 713, 714, 715 and 716 are open (Ref. AMM TASK 32-22-00-010-001).
(4) Make sure that access door 822 is open (Ref. AMM TASK 52-41-00-010-002).
(5) Make sure that the two screws and the protective cover are removed from battery power center 105VU.
(6) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position in zone 128, below access door 824.
(7) Make sure that avionics compartment access-door 824 is open (Ref. AMM TASK 52-41-00-010-002).
Subtask 34-12-51-010-052-C (1) Lift the aircraft with jacks (Ref. AMM TASK 07-11-00-581-001).
(2) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position below nose gear doors.
(3) Make sure that nose gear doors 713, 714, 715 and 716 are open (Ref. AMM TASK 32-22-00-010-001).
(4) Make sure that access door 822 is open (Ref. AMM TASK 52-41-00-010-002).
(5) Make sure that the two screws and the protective cover are removed from battery power center 105VU.
(6) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position in zone 128, below access door 824.
(7) Make sure that avionics compartment access-door 824 is open (Ref. AMM TASK 52-41-00-010-002).
C. Get Access
(1) Make sure that the umbrella assembly is removed (Ref. AMM TASK 25-71-00-000-801).
(2) In the avionics compartment, make sure that floor panel 127BG is removed (Ref. AMM TASK 53-12-13-000-001).
Subtask 34-12-51-865-050-A (1) Make sure that the umbrella assembly is removed (Ref. AMM TASK 25-71-00-000-801).
(2) In the avionics compartment, make sure that floor panel 127BG is removed (Ref. AMM TASK 53-12-13-000-001).
D. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:
4. Procedure| PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 49VU | NAV PROBES/ADIRU3/PWR/SWTG | 8FP | F09 |
| ** ON A/C ALL | |||
| 49VU | NAV PROBES/ADIRU 1/AND AOA 1/26VAC | 5FP1 | F07 |
| 49VU | NAV PROBES/ADIRU1/115VAC | 4FP1 | F06 |
| ** ON A/C NOT FOR ALL | |||
| 49VU | NAV PROBES/ADIRU3/PWR/SWTG | 8FP | F08 |
| ** ON A/C ALL | |||
| 105VU | ADIRS/ADIRU1/28VDC | 6FP1 | C02 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | ADIRS/ADIRU/2PWR/SHED | 10FP | N10 |
| ** ON A/C ALL | |||
| 121VU | ADIRS/ADIRU/3PWR/SWTG | 9FP | N09 |
| 121VU | ADIRS/ADIRU/2/26VAC AND AOA | 5FP2 | N08 |
| 121VU | ADIRS/ADIRU/3/26VAC AND AOA | 5FP3 | N07 |
| 121VU | ADIRS/ADIRU/2/115VAC | 4FP2 | N06 |
| 121VU | ADIRS/ADIRU/3/115VAC | 4FP3 | N05 |
| 121VU | ADIRS/ADIRU/2/28VDC | 6FP2 | N04 |
| 121VU | ADIRS/ADIRU/3/28VDC | 6FP3 | N03 |
| ** ON A/C NOT FOR ALL | |||
| 121VU | ADIRS/2PWR/SHED &/AOA2 MON | 10FP | N10 |
Subtask 34-12-51-210-052-B ** ON A/C NOT FOR ALL
WARNING:
USE PROTECTIVE GOGGLES WHEN YOU REMOVE OR INSTALL A COTTER PIN. EACH TIME YOU REMOVE A COTTER PIN DURING THE TASK, DISCARD IT IMMEDIATELY. A LOOSE COTTER PIN CAN CUT YOU OR MAKE YOU BLIND.
CAUTION:
IF YOU MUST MOVE THE TOOL IN THE AIRCRAFT, BE CAREFUL NOT TO DAMAGE THE PEEL SHIMS OF THE SUPPORTS OF THE ADIRU MOUNT.
A. Heading Check (1) Assemble the tool in the aircraft avionics compartment.
NOTE: The assembled tool is too large to go through the access door of the zone.
(2) Installation of the 98D34103000000 ALIGNMENT,TOOL-IRU PLATFORM BRACKETS(a) Remove and discard the cotter pins (3).
(b) Remove the nuts (4) and the washers (5).
(c) Remove and install the three screws (7) in the reverse direction one by one, to always have a minimum of three screws installed.
NOTE: The three screws prevent the bearing rotation.
(d) Remove the screw (8) that cannot be installed in the reverse direction. (e) If you cannot remove or install one screw (7) or (8) because of the load on the NLG:
- Lightly release the NLG with the hydraulic jack (Ref. AMM TASK 07-12-00-582-001) and try again.
NOTE: The shock absorber must not be compressed.
(f) Remove the flanges (9), the packings (6) and (10) and discard the packings. (g) Install the support shafts (11) on the pintles (1) of the NLG.
(h) Install the washers (5) and the nuts (4).
(i) Install the new AIPC 32-21-01-01-010 COTTER PINS (3) or AIPC 32-21-81-01-060 COTTER PINS (3).
(j) Assemble the three parts of the tool (14) with the bolts (12). Make sure that they are installed on the correct side.
NOTE: The left and right parts of the tool are not interchangeable.
(k) Install the tool (14) on the support shafts (11). To do this: - Tilt the top of the tool (14) forward to engage it in the support shafts (11).
- Let the tool (14) turn down until it touches the surfaces of the ADIRU mount support.
(m) Install and tighten the knurled nuts (15) on each support shaft (11).
(3) Heading Check
(a) Manually push the four pins (13) into the inspection bushes of the tool (14). The pins (13) must go easily in the attachment holes of the ADIRU mount support.
NOTE: If it is not easy to manually push the four pins (13) into the attachment holes for the ADIRU mount support, there is a heading angle mismatch.
For more information, you can speak to the Airbus Customer Service.
(4) Removal of the 98D34103000000 ALIGNMENT,TOOL-IRU PLATFORM BRACKETSFor more information, you can speak to the Airbus Customer Service.
(a) Remove the four pins (13).
(b) Remove the knurled nuts (15).
(c) Remove the tool (14) and the shim (16) from the support shafts (11).
(d) Remove the bolts (12) and disassemble the three parts of the tool (14).
(e) Remove and discard the cotter pins (3).
(f) Remove the nuts (4) and the washers (5).
(g) Remove the support shafts (11) from the pintles (1) of the NLG.
(h) Clean the flanges (9) with Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) and dry them with filtered compressed air.
(i) Install new AIPC 32-21-01-01-075 PACKINGS (10) or AIPC 32-21-81-01-120 PACKINGS (10) and new AIPC 32-21-01-01-060 PACKINGS (6) or AIPC 32-21-81-01-100 O-RINGS (6) on the flanges (9).
(j) Put the flanges (9) in position.
(k) Install the screw (8) that was not installed in the reverse direction.
(l) Remove then install the three screws (7) in their initial direction and one by one to always have a minimum of three screws installed.
NOTE: The three screws prevent the bearing rotation.
(m) If you cannot remove or install one screw (7) or (8) because of the load on the NLG: - Lightly release the NLG with the hydraulic jack (Ref. AMM TASK 07-12-00-582-001) and try again.
NOTE: The shock absorber must not be compressed.
(n) Install the washers (5) and the nuts (4) on the screws (7) and (8). (o) TORQUE the nuts (4) to between 1.35 and 1.2 m.daN (119.47 and 106.19 lbf.in )
. (p) From the nose gear compartment, visually make sure that the swivel bearings (2) touch correctly the nose gear well (no play).
(q) Install new AIPC 32-21-01-01-010 COTTER PINS (3) or AIPC 32-21-81-01-060 COTTER PINS (3).
B. Flatness Check
(1) If necessary, replace the damaged AIPC 34-11-01-14-130 PEEL SHIMS (2) or AIPC 34-11-81-11-130 PEEL SHIMS (2). Carefully clean the sealing bearing on the support surfaces of the ADIRU mount. Remove the unwanted thickness from the peel shims (2).
(2) Put the 98D34203000000 ALIGNMENT,TOOL-MOUNT,ADIRU (1) in position on the three peel shims (2) with the right angle of the tool (1) at position 2.
(3) Put the 3028000 CLINOMETER - REPLACED BY P/N 3028011001 or 950-315 DIGITAL PROTRACTOR on the two perpendicular arms of the tool (1).
(4) Adjust the assembly until it is horizontal. To do this, remove the unwanted thickness from the peel shims (2).
Tolerance for X (pitch)= +/-5'30" (+/-0.09°).
Tolerance for Y (roll)= +/-3'.30" (+/-0.06°).
(5) Turn the tool (1) 180 degrees until its right angle is at position 4.
(6) Adjust the assembly until it is horizontal. To do this, remove the unwanted thickness from the peel shims (2).
(7) Do a check to make sure that the assembly is horizontal. If not, go back to step (2).
(8) Remove the 3028000 CLINOMETER - REPLACED BY P/N 3028011001 or 950-315 DIGITAL PROTRACTOR and the tool (1).
Subtask 34-12-51-210-052-C ** ON A/C NOT FOR ALL (1) If necessary, replace the damaged AIPC 34-11-01-14-130 PEEL SHIMS (2) or AIPC 34-11-81-11-130 PEEL SHIMS (2). Carefully clean the sealing bearing on the support surfaces of the ADIRU mount. Remove the unwanted thickness from the peel shims (2).
(2) Put the 98D34203000000 ALIGNMENT,TOOL-MOUNT,ADIRU (1) in position on the three peel shims (2) with the right angle of the tool (1) at position 2.
(3) Put the 3028000 CLINOMETER - REPLACED BY P/N 3028011001 or 950-315 DIGITAL PROTRACTOR on the two perpendicular arms of the tool (1).
(4) Adjust the assembly until it is horizontal. To do this, remove the unwanted thickness from the peel shims (2).
Tolerance for X (pitch)= +/-5'30" (+/-0.09°).
Tolerance for Y (roll)= +/-3'.30" (+/-0.06°).
(5) Turn the tool (1) 180 degrees until its right angle is at position 4.
(6) Adjust the assembly until it is horizontal. To do this, remove the unwanted thickness from the peel shims (2).
(7) Do a check to make sure that the assembly is horizontal. If not, go back to step (2).
(8) Remove the 3028000 CLINOMETER - REPLACED BY P/N 3028011001 or 950-315 DIGITAL PROTRACTOR and the tool (1).
WARNING:
USE PROTECTIVE GOGGLES WHEN YOU REMOVE OR INSTALL A COTTER PIN. EACH TIME YOU REMOVE A COTTER PIN DURING THE TASK, DISCARD IT IMMEDIATELY. A LOOSE COTTER PIN CAN CUT YOU OR MAKE YOU BLIND.
CAUTION:
IF YOU MUST MOVE THE TOOL IN THE AIRCRAFT, BE CAREFUL NOT TO DAMAGE THE PEEL SHIMS OF THE SUPPORTS OF THE ADIRU MOUNT.
C. Heading Check NOTE: Two persons are recommended to make the installation of the tool easier. One person in the NLG area and the other inside the avionics compartment.
(1) Assemble the tool in the aircraft avionics compartment. NOTE: The assembled tool is too large to go through the access door of the zone.
(2) Install the 98D34103008000 RIGGING TOOL FOR ADIRU RACK or the 98D34103008001 RIGGING TOOL ADIRU RACK:(a) Remove and discard the cotter pins (10).
(b) Remove the nuts (9) and the washers (8).
(c) Remove the four bolts (4) and install the new bolts (7) in the opposite direction. Install one new bolt (7) each time you remove one of the four bolts (4). This is to make sure that you always have a minimum of three bolts installed and the bearing will not turn.
(d) If you cannot remove one bolt (4) or install one bolt (7) because of the load on the NLG:
1 Lightly release the load on the NLG with the hydraulic jack (Ref. AMM TASK 07-12-00-582-001) and try again.
NOTE: The shock absorber must not be compressed.
(e) Remove the flanges (3), the packings (5) and (6) and discard the packings. (f) Install the support shafts (16) on the pintles (1) of the NLG.
(g) Install the washers (17) and the nuts (18).
(h) Assemble the tool (13) and the arms (15) and (12) with the bolts (11). Make sure that the arms are installed on the correct side.
NOTE: The left and right arms of the tool are not interchangeable.
(i) Install the tool (13) on the support shafts (16) as follows: 1 Tilt the top of the tool (13) forward to engage it in the support shafts (16).
2 Let the tool (13) turn down until it touches the surfaces of the Air Data/Inertial Reference Unit (ADIRU) mount support.
(j) Install the shim (19) between the right arm (12) and the right support shaft (16) to prevent movement in the Y-axis (roll) direction.
(k) Install and tighten the knurled nuts (20) on each support shaft (16).
(3) Do a check of the heading:
(a) Manually push the four pins (14) into the inspection bushes of the tool (13). The pins (14) must engage easily in the attachment holes of the ADIRU mount support.
NOTE: If it is not easy to manually push the four pins (14) into the attachment holes of the ADIRU mount support, the heading angle is incorrect.
For more information, you can contact the Airbus Customer Service.
(4) Remove the 98D34103008000 RIGGING TOOL FOR ADIRU RACK or the 98D34103008001 RIGGING TOOL ADIRU RACK:For more information, you can contact the Airbus Customer Service.
(a) Remove the four pins (14).
(b) Remove the knurled nuts (20).
(c) Remove the arms (15) and (12) and the shim (19) from the support shafts (16).
(d) Remove the bolts (11) and disassemble the arms (15) and (12) and the tool (13).
(e) Remove the nuts (18) and the washers (17).
(f) Remove the support shafts (16) from the pintles (1) of the NLG.
(g) Clean the flanges (3) with Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) and dry them with filtered compressed air.
(h) Install the new AIPC 32-21-01-01-075 ORING (6) or AIPC 32-21-81-01-120 ORING (6) and the new AIPC 32-21-01-01-060 ORING (5) or AIPC 32-21-81-01-100 ORING (5) on the flanges (3).
(i) Put the flanges (3) in position.
(j) Remove the new bolts (7) then install the four bolts (4) in their initial direction. Install one of the four bolts (4) each time you remove one of the new bolts (7). This is to make sure that you always have a minimum of three bolts installed and that the bearing will not turn.
(k) If you cannot remove one bolt (7) or install one bolt (4) because of the load on the NLG:
1 Lightly release the load on the NLG with the hydraulic jack (Ref. AMM TASK 07-12-00-582-001) and try again.
NOTE: The shock absorber must not be compressed.
(l) Install the washers (8) and the nuts (9) on the bolts (4). (m) Tighten the nuts (9).
(n) From the nose gear compartment, visually make sure that the swivel bearings (2) touch correctly the nose gear.
(o) Install the new AIPC 32-21-01-01-010 PIN (10) or AIPC 32-21-81-01-060 PIN (10).
D. Flatness Check
(1) If necessary, replace the damaged AIPC 34-11-01-14-130 PEEL SHIMS (2) or AIPC 34-11-81-11-130 PEEL SHIMS (2).
(2) Carefully clean the sealing bearing on the support surfaces of the Air Data/Inertial Reference Unit (ADIRU) mount.
(3) Remove the unwanted thickness from the peel shims (2).
(4) Put the 98D34103008000 RIGGING TOOL FOR ADIRU RACK or the 98D34103008001 RIGGING TOOL ADIRU RACK (1) in position on the three peel shims (2) with the right angle of the tool (1) at position 2.
(5) Put the 3028000 CLINOMETER - REPLACED BY P/N 3028011001 or 950-315 DIGITAL PROTRACTOR on the two perpendicular arms of the tool (1).
(6) Adjust the assembly until it is horizontal. To do this:
(a) Remove the unwanted thickness from the peel shims (2):
Tolerance for X (pitch) = +/-5'30" (+/-0.09°)
Tolerance for Y (roll) = +/-3'.30" (+/-0.06°).
(7) Turn the tool (1) 180 degrees until its right angle is at position 4.
(8) Adjust the assembly until it is horizontal. To do this:
(a) Remove the unwanted thickness from the peel shims (2).
(9) Make sure that the assembly is horizontal. If not, go back to Step (2).
(10) Remove the 3028000 CLINOMETER - REPLACED BY P/N 3028011001 or 950-315 DIGITAL PROTRACTOR and the tool (1).
Subtask 34-12-51-210-052-D ** ON A/C NOT FOR ALL (1) If necessary, replace the damaged AIPC 34-11-01-14-130 PEEL SHIMS (2) or AIPC 34-11-81-11-130 PEEL SHIMS (2).
(2) Carefully clean the sealing bearing on the support surfaces of the Air Data/Inertial Reference Unit (ADIRU) mount.
(3) Remove the unwanted thickness from the peel shims (2).
(4) Put the 98D34103008000 RIGGING TOOL FOR ADIRU RACK or the 98D34103008001 RIGGING TOOL ADIRU RACK (1) in position on the three peel shims (2) with the right angle of the tool (1) at position 2.
(5) Put the 3028000 CLINOMETER - REPLACED BY P/N 3028011001 or 950-315 DIGITAL PROTRACTOR on the two perpendicular arms of the tool (1).
(6) Adjust the assembly until it is horizontal. To do this:
(a) Remove the unwanted thickness from the peel shims (2):
Tolerance for X (pitch) = +/-5'30" (+/-0.09°)
Tolerance for Y (roll) = +/-3'.30" (+/-0.06°).
(7) Turn the tool (1) 180 degrees until its right angle is at position 4.
(8) Adjust the assembly until it is horizontal. To do this:
(a) Remove the unwanted thickness from the peel shims (2).
(9) Make sure that the assembly is horizontal. If not, go back to Step (2).
(10) Remove the 3028000 CLINOMETER - REPLACED BY P/N 3028011001 or 950-315 DIGITAL PROTRACTOR and the tool (1).
WARNING:
USE PROTECTIVE GOGGLES WHEN YOU REMOVE OR INSTALL A COTTER PIN. EACH TIME YOU REMOVE A COTTER PIN DURING THE TASK, DISCARD IT IMMEDIATELY. A LOOSE COTTER PIN CAN CUT YOU OR MAKE YOU BLIND.
CAUTION:
IF YOU MUST MOVE THE TOOL IN THE AIRCRAFT, BE CAREFUL NOT TO DAMAGE THE PEEL SHIMS OF THE SUPPORTS OF THE ADIRU MOUNT.
E. Heading Check NOTE: Two persons are recommended to make the installation of the tool easier. One person in the NLG area and the other inside the avionics compartment.
(1) Assemble the tool in the aircraft avionics compartment. NOTE: The assembled tool is too large to go through the access door of the zone.
(2) Install the 98D34103008001 RIGGING TOOL ADIRU RACK:(a) Remove and discard the cotter pins (10).
(b) Remove the nuts (9) and the washers (8).
(c) Remove the four bolts (4) and install the new bolts (7) in the opposite direction. Install one new bolt (7) each time you remove one of the four bolts (4). This is to make sure that you always have a minimum of three bolts installed and the bearing will not turn.
(d) If you cannot remove one bolt (4) or install one bolt (7) because of the load on the NLG:
1 Lightly release the load on the NLG with the hydraulic jack (Ref. AMM TASK 07-12-00-582-001) and try again.
NOTE: The shock absorber must not be compressed.
(e) Remove the flanges (3), the packings (5) and (6) and discard the packings. (f) Install the support shafts (16) on the pintles (1) of the NLG.
(g) Install the washers (17) and the nuts (18).
(h) Assemble the tool (13) and the arms (15) and (12) with the bolts (11). Make sure that the arms are installed on the correct side.
NOTE: The left and right arms of the tool are not interchangeable.
(i) Install the tool (13) on the support shafts (16) as follows: 1 Tilt the top of the tool (13) forward to engage it in the support shafts (16).
2 Let the tool (13) turn down until it touches the surfaces of the Air Data/Inertial Reference Unit (ADIRU) mount support.
(j) Install the shim (19) between the right arm (12) and the right support shaft (16) to prevent movement in the Y-axis (roll) direction.
(k) Install and tighten the knurled nuts (20) on each support shaft (16).
(3) Do a check of the heading:
(a) Manually push the four pins (14) into the inspection bushes of the tool (13). The pins (14) must engage easily in the attachment holes of the ADIRU mount support.
NOTE: If it is not easy to manually push the four pins (14) into the attachment holes of the ADIRU mount support, the heading angle is incorrect.
For more information, you can contact the Airbus Customer Service.
(4) Remove the 98D34103008001 RIGGING TOOL ADIRU RACK:For more information, you can contact the Airbus Customer Service.
(a) Remove the four pins (14).
(b) Remove the knurled nuts (20).
(c) Remove the arms (15) and (12) and the shim (19) from the support shafts (16).
(d) Remove the bolts (11) and disassemble the arms (15) and (12) and the tool (13).
(e) Remove the nuts (18) and the washers (17).
(f) Remove the support shafts (16) from the pintles (1) of the NLG.
(g) Clean the flanges (3) with Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) and dry them with filtered compressed air.
(h) Install the new AIPC 32-21-01-01-075 ORING (6) or AIPC 32-21-81-01-120 ORING (6) and the new AIPC 32-21-01-01-060 ORING (5) or AIPC 32-21-81-01-100 ORING (5) on the flanges (3).
(i) Put the flanges (3) in position.
(j) Remove the new bolts (7) then install the four bolts (4) in their initial direction. Install one of the four bolts (4) each time you remove one of the new bolts (7). This is to make sure that you always have a minimum of three bolts installed and that the bearing will not turn.
(k) If you cannot remove one bolt (7) or install one bolt (4) because of the load on the NLG:
1 Lightly release the load on the NLG with the hydraulic jack (Ref. AMM TASK 07-12-00-582-001) and try again.
NOTE: The shock absorber must not be compressed.
(l) Install the washers (8) and the nuts (9) on the bolts (4). (m) Tighten the nuts (9).
(n) From the nose gear compartment, visually make sure that the swivel bearings (2) touch correctly the nose gear.
(o) Install the new AIPC 32-21-01-01-010 PIN (10) or AIPC 32-21-81-01-060 PIN (10).
F. Flatness Check
(1) If necessary, replace the damaged AIPC 34-11-01-14-130 PEEL SHIMS (2) or AIPC 34-11-81-11-130 PEEL SHIMS (2).
(2) Carefully clean the sealing bearing on the support surfaces of the ADIRU mount.
(3) Remove the unwanted thickness from the peel shims (2).
(4) Put the 98D34103008001 RIGGING TOOL ADIRU RACK (1) in position on the three peel shims (2) with the right angle of the tool (1) at position 2.
(5) Put the 3028000 CLINOMETER - REPLACED BY P/N 3028011001 or 950-315 DIGITAL PROTRACTOR on the two perpendicular arms of the tool (1).
(6) Adjust the assembly until it is horizontal. To do this:
(a) Remove the unwanted thickness from the peel shims (2):
Tolerance for X (pitch) = +/-5'30" (+/-0.09°)
Tolerance for Y (roll) = +/-3'.30" (+/-0.06°).
(7) Turn the tool (1) 180 degrees until its right angle is at position 4.
(8) Adjust the assembly until it is horizontal. To do this:
(a) Remove the unwanted thickness from the peel shims (2).
(9) Make sure that the assembly is horizontal. If not, go back to Step (2).
(10) Remove the 3028000 CLINOMETER - REPLACED BY P/N 3028011001 or 950-315 DIGITAL PROTRACTOR and the tool (1).
Subtask 34-12-51-420-050-B (1) If necessary, replace the damaged AIPC 34-11-01-14-130 PEEL SHIMS (2) or AIPC 34-11-81-11-130 PEEL SHIMS (2).
(2) Carefully clean the sealing bearing on the support surfaces of the ADIRU mount.
(3) Remove the unwanted thickness from the peel shims (2).
(4) Put the 98D34103008001 RIGGING TOOL ADIRU RACK (1) in position on the three peel shims (2) with the right angle of the tool (1) at position 2.
(5) Put the 3028000 CLINOMETER - REPLACED BY P/N 3028011001 or 950-315 DIGITAL PROTRACTOR on the two perpendicular arms of the tool (1).
(6) Adjust the assembly until it is horizontal. To do this:
(a) Remove the unwanted thickness from the peel shims (2):
Tolerance for X (pitch) = +/-5'30" (+/-0.09°)
Tolerance for Y (roll) = +/-3'.30" (+/-0.06°).
(7) Turn the tool (1) 180 degrees until its right angle is at position 4.
(8) Adjust the assembly until it is horizontal. To do this:
(a) Remove the unwanted thickness from the peel shims (2).
(9) Make sure that the assembly is horizontal. If not, go back to Step (2).
(10) Remove the 3028000 CLINOMETER - REPLACED BY P/N 3028011001 or 950-315 DIGITAL PROTRACTOR and the tool (1).
G. Installation of the Air Conditioning Pipes
(1) Install the avionics equipment ventilation-duct (Ref. AMM TASK 21-26-42-400-001).
(2) Install the filter assembly (2081HM, 2082HM, 2083HM) (if installed) (Ref. AMM TASK 21-26-43-400-002) or (Ref. AMM TASK 21-26-43-400-006) or (Ref. AMM TASK 21-26-43-400-007).
(3) Install the check valve (2140HM) (if installed) (Ref. AMM TASK 21-26-41-400-001).
Subtask 34-12-51-420-051-A ** ON A/C NOT FOR ALL (1) Install the avionics equipment ventilation-duct (Ref. AMM TASK 21-26-42-400-001).
(2) Install the filter assembly (2081HM, 2082HM, 2083HM) (if installed) (Ref. AMM TASK 21-26-43-400-002) or (Ref. AMM TASK 21-26-43-400-006) or (Ref. AMM TASK 21-26-43-400-007).
(3) Install the check valve (2140HM) (if installed) (Ref. AMM TASK 21-26-41-400-001).
H. Installation of the ADIRU Mount
(1) Prepare the surface of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-803).
(2) Install the air conditioning pipe (9).
(3) Install the nuts (10).
(4) Remove the CAP-BLANKING from each electrical connector and receptacle.
(5) Install the electrical connectors (12) on the mount (13).
(6) Install the nuts (14).
(7) Install the mount (13) on the peel shims (3). Be careful not to cause damage to the peel shims (3).
(8) Install the screws (6), washers (2) and nuts (1).
(9) Install the bonding leads (5), screws (7) and washers (8).
(10) Install the nuts (4).
(11) Do the electrical resistance measurement and the final protection of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-802).
Subtask 34-12-51-420-051-C ** ON A/C NOT FOR ALL (1) Prepare the surface of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-803).
(2) Install the air conditioning pipe (9).
(3) Install the nuts (10).
(4) Remove the CAP-BLANKING from each electrical connector and receptacle.
(5) Install the electrical connectors (12) on the mount (13).
(6) Install the nuts (14).
(7) Install the mount (13) on the peel shims (3). Be careful not to cause damage to the peel shims (3).
(8) Install the screws (6), washers (2) and nuts (1).
(9) Install the bonding leads (5), screws (7) and washers (8).
(10) Install the nuts (4).
(11) Do the electrical resistance measurement and the final protection of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-802).
H. Installation of the ADIRU Mount
(1) Prepare the surface of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-803).
(2) Remove the CAP-BLANKING from each electrical connector and receptacle.
(3) Install the electrical connectors (14) on the mount (2).
(4) Install the plates (13) and the screws (12).
(5) Tighten the screws (12).
(6) Install the mount (2) on the peel shims (4). Be careful not to cause damage to the peel shims (4).
(7) Install the bolts (1) and (3), washers (11) and (5), and nuts (10) and (6).
(8) TORQUE the nuts (6) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in ).
(9) If it is not possible to torque the nuts (6), TORQUE the bolts (3) to between 1.14 and 1.12 m.daN (100.88 and 99.12 lbf.in ).
(10) Tighten the nuts (10).
(11) Install the bonding leads (7), screws (9) and washers (8).
(12) Tighten the screws (9).
(13) Do the electrical resistance measurement and the final protection of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-802).
Subtask 34-12-51-420-053-A Subtask 34-12-51-420-054-A (1) Prepare the surface of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-803).
(2) Remove the CAP-BLANKING from each electrical connector and receptacle.
(3) Install the electrical connectors (14) on the mount (2).
(4) Install the plates (13) and the screws (12).
(5) Tighten the screws (12).
(6) Install the mount (2) on the peel shims (4). Be careful not to cause damage to the peel shims (4).
(7) Install the bolts (1) and (3), washers (11) and (5), and nuts (10) and (6).
(8) TORQUE the nuts (6) to between 1.06 and 0.82 m.daN (93.81 and 72.57 lbf.in )
. (9) If it is not possible to torque the nuts (6), TORQUE the bolts (3) to between 1.14 and 1.12 m.daN (100.88 and 99.12 lbf.in )
. (10) Tighten the nuts (10).
(11) Install the bonding leads (7), screws (9) and washers (8).
(12) Tighten the screws (9).
(13) Do the electrical resistance measurement and the final protection of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-802).
J. Installation of the ADIRUs
(1) Install ADIRUs 1FP1, 1FP2 and 1FP3 (Ref. AMM TASK 34-12-34-400-001).
5. Close-up(1) Install ADIRUs 1FP1, 1FP2 and 1FP3 (Ref. AMM TASK 34-12-34-400-001).
Subtask 34-12-51-410-051-C
A. Close Access
(1) Install aft avionics-compartment floor-panel 127BG (Ref. AMM TASK 53-12-13-400-001).
(2) Install the umbrella assembly (Ref. AMM TASK 25-71-00-400-801).
Subtask 34-12-51-420-052-A (1) Install aft avionics-compartment floor-panel 127BG (Ref. AMM TASK 53-12-13-400-001).
(2) Install the umbrella assembly (Ref. AMM TASK 25-71-00-400-801).
B. Put the aircraft back to its initial configuration.
(1) Make sure that the work area is clean and clear of tools and other items.
(1) Make sure that the work area is clean and clear of tools and other items.