DOC AIRBUS | AMM A320FOutlet Guide Vanes Blending of the Leading Edge and/or Paint Spot Touch-Up of the Airfoil (Outlet Guide Vane (OGV) Remove) [CFML]
TASK 72-24-20-300-801-A
Outlet Guide Vanes Blending of the Leading Edge and/or Paint Spot Touch-Up of the Airfoil (Outlet Guide Vane (OGV) Remove)
This procedure gives instructions to blend the leading edge and/or to do a paint touch-up of the airfoil (Outlet Guide Vanes (OGV) remove).
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 72-24-20-941-053-A
Subtask 72-24-20-220-050-A
Subtask 72-24-20-942-050-A
[Rev.10 from 2021]
2026.04.01 02:53:20 UTC
Outlet Guide Vanes Blending of the Leading Edge and/or Paint Spot Touch-Up of the Airfoil (Outlet Guide Vane (OGV) Remove)
WARNING:
BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
WARNING:
USE PROTECTIVE GLOVES TO PREVENT INJURY FROM SHARP EDGES AND ROUGH SURFACES.
1. Reason for the JobThis procedure gives instructions to blend the leading edge and/or to do a paint touch-up of the airfoil (Outlet Guide Vanes (OGV) remove).
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
| REFERENCE | QTY | DESIGNATION |
|---|---|---|
| No specific | 1 | AIR SOURCE FILTERED, DRY |
| No specific | AR | WARNING NOTICE(S) |
| No specific | 1 | WATER - DEIONIZED |
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.CP1041) | isopropyl alcohol |
| (Material No.CP2208) | 3M-361 tape |
| (Material No.CP2286) | primer br-127 |
| (Material No.CP2659) | alodine 1132 |
| (Material No.CP2687) | diestone DLS |
| (Material No.CP2721) | abrasive cloth, silicon carbide |
| (Material No.14SBA1) | Textile-Lint free Cotton - |
| No specific | LBYH 203 (finishing paint) supplier: mader (-) |
| No specific | S1096 aluminum alloys etchant |
| No specific | Thinner DL 1511 |
| No specific | finishing paint (S1086) PRIAM 32005 |
| No specific | primer (S1238) BOLLORE PRIAM PCEH 100 |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 210 | CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD |
| 400 | POWER PLANT, NACELLES AND PYLONS |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 72-24-20-000-801-A | Removal of the Outlet Guide Vane (OGV) |
| TASK 72-24-20-400-801-A | Installation of the Outlet Guide Vane (OGV) |
Outlet Guide Vanes - Configuration 1 (Welded)Subtask 72-24-20-941-053-A
A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Put a WARNING NOTICE(S) in position to tell persons not to operate:
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).
Subtask 72-24-20-370-050-A (1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Put a WARNING NOTICE(S) in position to tell persons not to operate:
- The ENG/MODE selector switch
- The ENG/MASTER 1(2) control switch.
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).
B. Mix mat black LBYH 203 (finishing paint) supplier: mader (-) in the proportions given below:
(1) 3.5274 oz (100.00 g) of base of LBYH 203 (finishing paint) supplier: mader (-).
(2) 0.35274 oz (10.00 g) of hardening agent of LBYH 203 (finishing paint) supplier: mader (-).
(3) Thinner DL 1511 or WATER - DEIONIZED: max five percent by weight of the total mixture.
Subtask 72-24-20-990-050-A (1) 3.5274 oz (100.00 g) of base of LBYH 203 (finishing paint) supplier: mader (-).
(2) 0.35274 oz (10.00 g) of hardening agent of LBYH 203 (finishing paint) supplier: mader (-).
(3) Thinner DL 1511 or WATER - DEIONIZED: max five percent by weight of the total mixture.
NOTE: The pot life of the finish paint is two hours maximum.
C. The subsequent table gives a list of the part numbers and the configuration which corresponds.
Table 801
4. ProcedureTable 801
| Part number | Service Bulletin | CSN | Configuration |
|---|---|---|---|
| 362-089-011-0 | - | (05-110, 72-24-00) | 1 |
| 362-052-111-0 | - | (05-220, 72-24-00) | 1 |
| 362-052-211-0 | - | (05-330, 72-24-00) | 1 |
| 362-052-311-0 | - | (05-440, 72-24-00) | 1 |
| 362-089-111-0 | - | (05-550, 72-24-00) | 1 |
| 362-052-611-0 | - | (05-770, 72-24-00) | 1 |
| 362-052-711-0 | - | (05-880, 72-24-00) | 1 |
| 362-052-811-0 | - | (10-110, 72-24-00) | 1 |
| 362-053-011-0 | - | (10-440, 72-24-00) | 1 |
| 362-053-211-0 | - | (10-550, 72-24-00) | 1 |
| 362-089-021-0 | - | (05-110, 72-24-00) | 2 |
| 362-052-121-0 | - | (05-220, 72-24-00) | 2 |
| 362-052-221-0 | - | (05-330, 72-24-00) | 2 |
| 362-052-321-0 | - | (05-440, 72-24-00) | 2 |
| 362-089-121-0 | - | (05-550, 72-24-00) | 2 |
| 362-052-521-0 | - | (05-660, 72-24-00) | 2 |
| 362-052-621-0 | - | (05-770, 72-24-00) | 2 |
| 362-052-721-0 | - | (05-880, 72-24-00) | 2 |
| 362-052-821-0 | - | (10-110, 72-24-00) | 2 |
| 362-053-121-0 | - | (10-220, 72-24-00) | 2 |
| 362-052-921-0 | - | (10-330, 72-24-00) | 2 |
| 362-053-021-0 | - | (10-440, 72-24-00) | 2 |
| 362-053-221-0 | - | (10-550, 72-24-00) | 2 |
Subtask 72-24-20-220-050-A
A. Dimensional Information.
Table 802
Subtask 72-24-20-020-051-A Subtask 72-24-20-110-050-A Table 802
| Description | Minimum In-Process Dimension | Maximum In-Process Dimension | Minimum Finish Dimension | Maximum Finish Dimension | Reference Dimension |
|---|---|---|---|---|---|
| Dim. H | - | - | 4.57 in. (116 mm) | - | - |
| Dim. P | - | - | - | 0.314 in. (8 mm) | - |
| Dim. L | - | - | 6 x P | - | - |
| Radius R | - | - | 5 x P | - | - |
| Radius C | - | - | 0.04 in. (1 mm) | - | - |
| Dim. D | - | - | 10 x P if Dim. P less than or equal to 0.237 in. (6 mm) | - | - |
| Dim. D | - | - | 2.37 in. (60 mm) if Dim. P more than 0.237 in. (6 mm) | - | - |
| Dim. Z | - | 0.19 in. (5 mm) | - | - | - |
| Dim. S | - | 1.18 in. (30 mm) | - | - | - |
| Quantity of blending per Outlet Guide Vane (OGV) | - | - | - | 2 | - |
| Quantity of blending per engine * | - | - | - | 20 | - |
| Surface of painted area per paint touch up ** | - | - | - | 1 in.2 (645 mm2) | - |
NOTE: * Quantity maximum to respect for each engine OGV set (all OGV Wheel, OGV Struts not included).
NOTE: ** Maximum surface of painted area to respect for each paint touch up (overspray area not included).
C. Cleaning
(1) If necessary, clean the part with a Textile-Lint free Cotton - (Material No.14SBA1) moistened in isopropyl alcohol (Material No.CP1041) or diestone DLS (Material No.CP2687)SPM 702111 .
Subtask 72-24-20-220-051-A (1) If necessary, clean the part with a Textile-Lint free Cotton - (Material No.14SBA1) moistened in isopropyl alcohol (Material No.CP1041) or diestone DLS (Material No.CP2687)
D. Inspect the area to be repaired:
(1) If you need to blend, refer to the Para. 4.E.
(2) If you need to paint, refer to the Para. 4.F.
Subtask 72-24-20-350-050-A (1) If you need to blend, refer to the Para. 4.E.
(2) If you need to paint, refer to the Para. 4.F.
E. Blending and Fluorescent Penetrant Inspection (FPI).
SPM 704112 or SPM 704111 :
(a) Count the number of blendings on OGV wheel.
1 Make sure that quantity of blend repairs on the engine is not maximal. Refer to the Para. 4.A.
(b) Make sure that the blending is in the limits. You must not blend in OGV foot (included leading edge fillet). Refer to the Para. 4.A.
(c) After the repair, the leading edge contour and thickness must be similar to the shape of the original leading edge.
(d) If there are two areas blended, make sure that the Dim. D is in the limits. Refer to the Para. 4.A.
(e) Blow blended area.
(2) Do the FPI as follows:
(a) Clean the part with a Textile-Lint free Cotton - (Material No.14SBA1) moistened in isopropyl alcohol (Material No.CP1041) or diestone DLS (Material No.CP2687)SPM 702111 .
(b) Swab locally all the blended area to be etched with S1096 aluminum alloys etchantSPM 705311 .
(c) Do a local FPI of the blended areaSPM 703221 or SPM 703222 .
1 No cracks are permitted.
(3) Paint the blended area. Refer to the Para. 4.F.
Subtask 72-24-20-370-051-A WARNING:
USE PERSONAL PROTECTION EQUIPMENT. METAL PARTICLES CAN CAUSE DAMAGE, INJURY OR IRRITATION.
CAUTION:
WHEN YOU DO THE BLENDING, REMOVE ONLY THE MINIMUM QUANTITY OF MATERIAL NECESSARY TO REMOVE THE DEFECT. IF YOU REMOVE TOO MUCH MATERIAL, DAMAGE TO THE PART CAN OCCUR.
CAUTION:
MAKE SURE THAT THE BLENDED AREAS MAKE A SMOOTH CONTOUR INTO THE ADJACENT AREAS. IF NOT, DAMAGE TO THE PART CAN OCCUR.
CAUTION:
MAKE SURE THAT YOU DO NOT DO MORE THAN TWO BLENDINGS ON EACH LEADING EDGE. IF YOU DO NOT OBEY THIS INSTRUCTION, DAMAGE CAN OCCUR.
(1) Blend the area to be repaired as follows (a) Count the number of blendings on OGV wheel.
1 Make sure that quantity of blend repairs on the engine is not maximal. Refer to the Para. 4.A.
(b) Make sure that the blending is in the limits. You must not blend in OGV foot (included leading edge fillet). Refer to the Para. 4.A.
(c) After the repair, the leading edge contour and thickness must be similar to the shape of the original leading edge.
(d) If there are two areas blended, make sure that the Dim. D is in the limits. Refer to the Para. 4.A.
(e) Blow blended area.
WARNING:
WHEN YOU USE COMPRESSED AIR:
1 Blow the blended area with AIR SOURCE FILTERED, DRY and de-oiled. - USE THE CORRECT PROTECTION (FACE SHIELD OR GOGGLES)
- DO NOT POINT THE AIRFLOW AT YOURSELF OR OTHER PERSONS
- DO NOT LET THE PRESSURE BE MORE THAN 30 PSIG (200 KPA).
(2) Do the FPI as follows:
(a) Clean the part with a Textile-Lint free Cotton - (Material No.14SBA1) moistened in isopropyl alcohol (Material No.CP1041) or diestone DLS (Material No.CP2687)
(b) Swab locally all the blended area to be etched with S1096 aluminum alloys etchant
(c) Do a local FPI of the blended area
1 No cracks are permitted.
(3) Paint the blended area. Refer to the Para. 4.F.
F. Do the paint touch up of area to be repaired.
(a) Overflow is not permitted in counterbores and bolt holes.
(2) Prepare the area to be painted as follows:
(a) Clean the part with a Textile-Lint free Cotton - (Material No.14SBA1) moistened in isopropyl alcohol (Material No.CP1041) or diestone DLS (Material No.CP2687)SPM 702111 .
(b) Apply locally manufactured tool to the area you will not paint.
1 Make sure that the Dim. Z is in the limits around the area to be painted. Refer to the Para. 4.A.
2 Make sure that the surface of area to be painted is in the limits. Refer to the Para. 4.A.
(c) Brushing of the paint.
CP2721 abrasive cloth, silicon carbide SPM 704111 .
a Make sure that you do not remove parent material in not blended area. Refer to the Para. 4.A.
(d) Removal of the locally manufactured tool.
(f) Cleaning.
1 Clean the part with a Textile-Lint free Cotton - (Material No.14SBA1) moistened in isopropyl alcohol (Material No.CP1041) or diestone DLS (Material No.CP2687)SPM 702111 .
(3) Examine the area to be repaired where you will make the touch up. The criteria below are not permitted:
(a) Dents, Nicks, Scratches.
(b) Erosion.
(c) Corrosion.
(d) Cracks.
(4) Apply mask to the areas you will not paint with the 3M-361 tape (Material No.CP2208) .
(a) Make sure that Dim. Z is in the limits around the area to be painted. Refer to the Para. 4.A.
(5) Spot touch-up of the oxide film coating.
(6) Check the configuration of part to be painted.
(a) Clean the part with a Textile-Lint free Cotton - (Material No.14SBA1) moistened in isopropyl alcohol (Material No.CP1041) or diestone DLS (Material No.CP2687)SPM 702111 .
(b) If necessary, remove the mask applied before and apply a new mask to the areas you will not paint with the 3M-361 tape (Material No.CP2208) . Refer to previous Para. 4.F.(4).
1 Make sure that the surface of area to be painted is not maximal. Refer to Para. 4.A.
(c) For configuration 1, apply primer br-127 (Material No.CP2286) and finishing paint (S1086) PRIAM 32005 as follows:
SPM 706414 and instructions below:
a Apply a thickness of primer (S1238) BOLLORE PRIAM PCEH 100 of 0.0008 in. (0.020 mm) up to 0.0012 in. (0.030 mm), dry and cure the part.
c If thickness of primer (S1238) BOLLORE PRIAM PCEH 100 respect previous indications, remove all the masking tape.
2 Cleaning.
a Clean the part with a Textile-Lint free Cotton - (Material No.14SBA1) moistened in isopropyl alcohol (Material No.CP1041) or diestone DLS (Material No.CP2687)SPM 702111 .
3 Apply and check finishing paint (S1086) PRIAM 32005 mat black.SPM 706414 and instructions below:
a Apply finishing paint (S1086) PRIAM 32005 mat black with overspray on adjacent areas in repeated thin coats to get a thickness between 0.0020 in. (0.05 mm) up to 0.0031 in. (0.08 mm).
c Cure parts to 239 deg.F (115.00 deg.C) maximum during 90 minutes.
e Make sure that after polymerization of the anti-erosion paint the roughness of the part is less than 63 microinches (1.6 micrometers).
f Inspect the repaired area.
(d) For configuration 2, apply primer (S1238) BOLLORE PRIAM PCEH 100 and finishing paint (S1086) PRIAM 32005 as follows:
a Process a test specimen (strip of sheet metal), along with the part to be painted, for quality assurance purposes.
b Polish the test specimen with strips ofCP2721 abrasive cloth, silicon carbide SPM 704111 .
c Clean the test specimen with a Textile-Lint free Cotton - (Material No.14SBA1) moistened in isopropyl alcohol (Material No.CP1041) or diestone DLS (Material No.CP2687) onlySPM 702111 .
d Measure thickness of test specimen prior to application to determine required thickness.
2 Apply primer (S1238) BOLLORE PRIAM PCEH 100.SPM 706418 and instructions below to apply primer br-127 (Material No.CP2286) only.
a Apply a thickness of primer br-127 (Material No.CP2286) between 0.0002 in. (0.005 mm) and 0.0012 in. (0.030 mm) on area to be painted and on test specimen in the same time.
b Let dry in clean air for 30 to 45 minutes.
c Cure parts to 176 deg.F (80.00 deg.C) plus or minus 41 deg.F (5.00 deg.C) during one hour.
e If thickness of primer (S1238) BOLLORE PRIAM PCEH 100 respect previous indications, remove all the masking tape.
3 Cleaning.
a Clean the part with a Textile-Lint free Cotton - (Material No.14SBA1) moistened in isopropyl alcohol (Material No.CP1041) or diestone DLS (Material No.CP2687)SPM 702111 .
4 Apply finishing paint (S1086) PRIAM 32005 as follows:
a Prepare mat black LBYH 203 (finishing paint) supplier: mader (-). Refer to the Para. 3.C.
b Apply LBYH 203 (finishing paint) supplier: mader (-) mat black with overspray on adjacent areas in repeated thin coats to get a thickness between 0.0020 in. (0.05 mm) and 0.0028 in. (0.07 mm) on area to be painted and on test specimen in the same time.
d Cure part to 176 deg.F (80.00 deg.C) plus or minus 41 deg.F (5.00 deg.C) during one hour.
f Make sure that after polymerization the roughness of the anti-erosion paint is less than 59 microinches (1.5 micrometers).
5 Do a visual inspection of the paint of the OGV as follows:
a The color and appearance of the repaired area must be homogenous mat.
b The repaired area must be smooth and free of runs, pinholes, craters or blisters and without inclusions of foreign object.
c The interface between the repaired area and the remaining paint must be smooth.
d No paint step permitted.
(e) Install the repaired part. Refer to Para. 4.G.
Subtask 72-24-20-420-052-A CAUTION:
MAKE SURE THAT YOU OBEY THE MAXIMUM AREA DIMENSIONS WHEN YOU APPLY PAINT. IF YOU DO NOT, YOU WILL CAUSE DAMAGE TO THE COUNTERBORES AND BOLT HOLES.
(1) Make sure that you respect area to be painted. (a) Overflow is not permitted in counterbores and bolt holes.
(2) Prepare the area to be painted as follows:
(a) Clean the part with a Textile-Lint free Cotton - (Material No.14SBA1) moistened in isopropyl alcohol (Material No.CP1041) or diestone DLS (Material No.CP2687)
(b) Apply locally manufactured tool to the area you will not paint.
1 Make sure that the Dim. Z is in the limits around the area to be painted. Refer to the Para. 4.A.
2 Make sure that the surface of area to be painted is in the limits. Refer to the Para. 4.A.
(c) Brushing of the paint.
CAUTION:
MAKE SURE THAT YOU DO THE TOUCH-UP OF THE OXIDE FILM LAYER NOT MORE THAN FOUR HOURS AFTER HAND BLENDING. IF YOU DO NOT OBEY THIS INSTRUCTION, YOU CAN CAUSE DAMAGE TO THE OUTLET GUIDE VANE.
1 Brush the polyurethane paint and the primer br-127 (Material No.CP2286) locally with strips of a Make sure that you do not remove parent material in not blended area. Refer to the Para. 4.A.
(d) Removal of the locally manufactured tool.
WARNING:
WHEN YOU USE COMPRESSED AIR:
(e) Blow the surface to be painted with AIR SOURCE FILTERED, DRY and de-oiled. - USE THE CORRECT PROTECTION (FACE SHIELD OR GOGGLES)
- DO NOT POINT THE AIRFLOW AT YOURSELF OR OTHER PERSONS
- DO NOT LET THE PRESSURE BE MORE THAN 30 PSIG (200 KPA).
(f) Cleaning.
1 Clean the part with a Textile-Lint free Cotton - (Material No.14SBA1) moistened in isopropyl alcohol (Material No.CP1041) or diestone DLS (Material No.CP2687)
(3) Examine the area to be repaired where you will make the touch up. The criteria below are not permitted:
(a) Dents, Nicks, Scratches.
(b) Erosion.
(c) Corrosion.
(d) Cracks.
(4) Apply mask to the areas you will not paint with the 3M-361 tape (Material No.CP2208) .
(a) Make sure that Dim. Z is in the limits around the area to be painted. Refer to the Para. 4.A.
(5) Spot touch-up of the oxide film coating.
CAUTION:
MAKE SURE THAT YOU DO THE PAINT TOUCH-UP NOT MORE THAN 72 HOURS AFTER THE TOUCH-UP OF THE OXIDE FILM LAYER. IF YOU DO NOT OBEY THIS INSTRUCTION, YOU CAN CAUSE DAMAGE TO THE OUTLET GUIDE VANE.
CAUTION:
MAKE SURE THAT YOU DO NOT APPLY THE OXYDE COATING ON THE REMAINING PAINT. IF YOU DO NOT OBEY THIS INSTRUCTION, YOU CAN CAUSE DAMAGE TO THE REMAINING PAINT.
(a) If necessary, do the spot touch-up of oxide film coating of the area to be painted with alodine 1132 (Material No.CP2659) . Let dry in clean air. (6) Check the configuration of part to be painted.
(a) Clean the part with a Textile-Lint free Cotton - (Material No.14SBA1) moistened in isopropyl alcohol (Material No.CP1041) or diestone DLS (Material No.CP2687)
(b) If necessary, remove the mask applied before and apply a new mask to the areas you will not paint with the 3M-361 tape (Material No.CP2208) . Refer to previous Para. 4.F.(4).
1 Make sure that the surface of area to be painted is not maximal. Refer to Para. 4.A.
(c) For configuration 1, apply primer br-127 (Material No.CP2286) and finishing paint (S1086) PRIAM 32005 as follows:
NOTE: You must respect the following conditions:
1 Apply primer (S1238) BOLLORE PRIAM PCEH 100. - Temperature between 59 deg.F (15.00 deg.C) and 95 deg.F (35.00 deg.C),
- Humidity between 30 and 80 percent.
a Apply a thickness of primer (S1238) BOLLORE PRIAM PCEH 100 of 0.0008 in. (0.020 mm) up to 0.0012 in. (0.030 mm), dry and cure the part.
- Make sure that the part remains at a temperature of 176 deg.F (80.00 deg.C) plus or minus 41 deg.F (5.00 deg.C) during the curing.
NOTE: It is permitted to use an infrared system with feed back control for curing.
b Control primer thickness on the test specimen. c If thickness of primer (S1238) BOLLORE PRIAM PCEH 100 respect previous indications, remove all the masking tape.
2 Cleaning.
a Clean the part with a Textile-Lint free Cotton - (Material No.14SBA1) moistened in isopropyl alcohol (Material No.CP1041) or diestone DLS (Material No.CP2687)
3 Apply and check finishing paint (S1086) PRIAM 32005 mat black.
a Apply finishing paint (S1086) PRIAM 32005 mat black with overspray on adjacent areas in repeated thin coats to get a thickness between 0.0020 in. (0.05 mm) up to 0.0031 in. (0.08 mm).
- Make sure that the overspray areas must not be larger than Dim. S. Refer to the Para. 4.A.
- The thickness of finishing paint (S1086) PRIAM 32005 must decrease up to 0 in. (0 mm) in the transition paint area.
c Cure parts to 239 deg.F (115.00 deg.C) maximum during 90 minutes.
- Make sure that the part remains at a temperature of 239 deg.F (115.00 deg.C) during the curing.
NOTE: It is permitted to use an infrared system with feed back control for curing.
d Control finishing paint thickness on the test specimen. e Make sure that after polymerization of the anti-erosion paint the roughness of the part is less than 63 microinches (1.6 micrometers).
f Inspect the repaired area.
(d) For configuration 2, apply primer (S1238) BOLLORE PRIAM PCEH 100 and finishing paint (S1086) PRIAM 32005 as follows:
NOTE: You must respect the following conditions:
1 Prepare test specimen as follows: - Temperature between 59 deg.F (15.00 deg.C) and 95 deg.F (35.00 deg.C),
- Humidity between 30 and 80 percent.
a Process a test specimen (strip of sheet metal), along with the part to be painted, for quality assurance purposes.
b Polish the test specimen with strips of
c Clean the test specimen with a Textile-Lint free Cotton - (Material No.14SBA1) moistened in isopropyl alcohol (Material No.CP1041) or diestone DLS (Material No.CP2687) only
d Measure thickness of test specimen prior to application to determine required thickness.
2 Apply primer (S1238) BOLLORE PRIAM PCEH 100.
a Apply a thickness of primer br-127 (Material No.CP2286) between 0.0002 in. (0.005 mm) and 0.0012 in. (0.030 mm) on area to be painted and on test specimen in the same time.
b Let dry in clean air for 30 to 45 minutes.
c Cure parts to 176 deg.F (80.00 deg.C) plus or minus 41 deg.F (5.00 deg.C) during one hour.
- Make sure that the part remains at a temperature of 176 deg.F (80.00 deg.C) plus or minus 41 deg.F (5.00 deg.C) during the curing.
NOTE: It is permitted to use an infrared system with feed back control for curing.
d Control primer thickness on the test specimen. e If thickness of primer (S1238) BOLLORE PRIAM PCEH 100 respect previous indications, remove all the masking tape.
3 Cleaning.
a Clean the part with a Textile-Lint free Cotton - (Material No.14SBA1) moistened in isopropyl alcohol (Material No.CP1041) or diestone DLS (Material No.CP2687)
4 Apply finishing paint (S1086) PRIAM 32005 as follows:
a Prepare mat black LBYH 203 (finishing paint) supplier: mader (-). Refer to the Para. 3.C.
b Apply LBYH 203 (finishing paint) supplier: mader (-) mat black with overspray on adjacent areas in repeated thin coats to get a thickness between 0.0020 in. (0.05 mm) and 0.0028 in. (0.07 mm) on area to be painted and on test specimen in the same time.
- Make sure that the overspray areas must not be larger than Dim. S. Refer to the Para. 4.A.
- The thickness of finishing paint must decrease up to 0 mm (0 in.) in the transition paint area.
d Cure part to 176 deg.F (80.00 deg.C) plus or minus 41 deg.F (5.00 deg.C) during one hour.
- Make sure that the part remains at a temperature of 176 deg.F (80.00 deg.C) plus or minus 41 deg.F (5.00 deg.C) during the curing.
NOTE: It is permitted to use an infrared system for curing with feed back control.
e Control finishing paint thickness on the test specimen. f Make sure that after polymerization the roughness of the anti-erosion paint is less than 59 microinches (1.5 micrometers).
5 Do a visual inspection of the paint of the OGV as follows:
a The color and appearance of the repaired area must be homogenous mat.
b The repaired area must be smooth and free of runs, pinholes, craters or blisters and without inclusions of foreign object.
c The interface between the repaired area and the remaining paint must be smooth.
d No paint step permitted.
(e) Install the repaired part. Refer to Para. 4.G.
G. Install the repaired part on the engine (Ref. AMM TASK 72-24-20-400-801).
(1) Count the number of blendings on OGV wheel.
(a) Make sure that quantity of blend repairs on the engine is not maximal. Refer to Para. 4.A.
5. Close-up(1) Count the number of blendings on OGV wheel.
(a) Make sure that quantity of blend repairs on the engine is not maximal. Refer to Para. 4.A.
Subtask 72-24-20-942-050-A
A. Put the aircraft back to its initial configuration.
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the WARNING NOTICE(S).
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the WARNING NOTICE(S).