Export Control
EAR Export Classification: Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3), except for the following Service Bulletins which are currently published as EAR Export Classification 9E991: SBE70-0992, SBE72-0483, SBE72-0580, SBE72-0588, SBE72-0640, SBE73-0209, SBE80-0024 and SBE80-0025.Copyright
© IAE International Aero Engines AG (2001, 2014 - 2021) The information contained in this document is the property of © IAE International Aero Engines AG and may not be copied or used for any purpose other than that for which it is supplied without the express written authority of © IAE International Aero Engines AG. (This does not preclude use by engine and aircraft operators for normal instructional, maintenance or overhaul purposes.).Applicability
All
Common Information
TASK 24-21-49-700-101 IDG Cooling Oil Tubes - Do a Test, Testing-001
Effectivity
FIG/ITEM | PART NO. |
01-500 | 740-5269-501 |
02-100 | 740-5271-503 |
02-100 | 740-5271-505 |
02-500 | 740-5273-503 |
02-500 | 740-5273-505 |
03-100 | 740-5275-503 |
01-100 | 740-5727-509 |
01-100 | 740-5727-511 |
01-100 | 740-5727-513 |
03-500 | 740-5737-509 |
03-500 | 740-5737-511 |
General
Fig/item numbers in parentheses in the procedure agree with those used in the IPC. Only the primary Fig/item numbers are used. For the service-bulletin alpha-variants refer to the IPC.
The IDG oil cooling tubing must be cleaned and inspected before this pressure test, Refer to Cleaning-000 TASK 24-21-49-100-100 and Inspection-000 TASK 24-21-49-200-100.
NOTE
The Test Equipment Specification
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| Hydraulic pressure testing rig | LOCAL | Hydraulic pressure testing rig | ||
| Pneumatic pressure testing rig | LOCAL | Pneumatic pressure testing rig | ||
| Pressure seal plug | 0AM53 | MS21913-10 | ||
| MS21913-12 Blanking plug | 0AM53 | MS21913-12 | ||
| Pressure seal cap | 0AM53 | MS21914-10 | ||
| Pressure seal cap | 0AM53 | MS21914-12 | ||
| IAE 1N20424 Pressurising adapter | 0AM53 | IAE 1N20424 | 1 off | |
| IAE 1N20425 Pressurising adapter | 0AM53 | IAE 1N20425 | 1 off | |
| IAE 1N20432 Pressurising adapter | 0AM53 | IAE 1N20432 | 1 off | |
| IAE 1N20433 Pressurising adapter | 0AM53 | IAE 1N20433 | 1 off |
Consumables, Materials and Expendables
NONESpares
NONESafety Requirements
NONEProcedure
Install the IAE 1N20425 Pressurising adapter 1 off and the AGS164/R fibre washer 1 off to the tube (01-100). Safety the components with 0.250 in (6.4 mm) bolts, washers and nuts.
Install the IAE 1N20432 Pressurising adapter 1 off to the tube (01-500).
Install the IAE 1N20432 Pressurising adapter 1 off to the tube (02-100).
Install the IAE 1N20433 Pressurising adapter 1 off to the tube (02-500).
Install the IAE 1N20433 Pressurising adapter 1 off to the tube (03-100).
Install the IAE 1N20424 Pressurising adapter 1 off and the AGS164/D fibre washer 1 off to the tube (03-500). Safety the components with 0.250 in (6.4 mm) bolts, washers and nuts.
SUBTASK 24-21-49-780-051 Prepare the Tubes (01-100, 01-500, 02-100, 02-500, 03-100 and 03-500) for the Hydraulic Pressure Test
Connect the tube to the outlet of the Hydraulic pressure testing rig and the bleed valve adapter. Make sure that the bleed valve is open.
Make sure that the pressure control valve is set to zero.
Start the Hydraulic pressure testing rig.
Slowly turn the pressure control valve until the fluid comes out of the bleed valve.
Close the bleed valve.

CAUTION
DO NOT GO PAST THE TEST PRESSURE SHOWN BELOW. IT CAN CAUSE DAMAGE TO THE TUBE. IF THE PRESSURE IN THE TUBE GETS TO MORE THAN THAT SHOWN BELOW, REJECT THE TUBE.Increase the pressure in the tubes (01-100, 01-500, 02-100, 02-500, 03-100 and 03-500) to 650 psi (4485 kPa).
Let the pressure stay in the tube for 2 minutes.
Make sure that the tube has no leaks. If the tube has leaks, reject the tube, Refer to Inspection-000 TASK 24-21-49-200-100.
Decrease the pressure in the tube to zero.
Stop the Hydraulic pressure testing rig.
Open the bleed valve.
Disconnect the tube from the outlet of the Hydraulic pressure testing rig and the bleed valve adapter.
Remove the adapters from the tube.

WARNING
BE CAREFUL WHEN YOU USE COMPRESSED AIR. PUT ON PROTECTIVE CLOTHING AND GOGGLES.Remove unwanted fluid from the tube with clean, dry compressed air.
SUBTASK 24-21-49-780-052 Do the Hydraulic Pressure Test on the Tubes (01-100, 01-500, 02-100, 02-500, 03-100 and 03-500)
Do again the procedure to prepare the tubes for the hydraulic pressure test, refer to Step.
Install an applicable blanking cap to the open end of the tubes (01-100, 01-500 and 03-100).
Install an applicable blanking plug to the open end of the tubes (02-100, 02-500 and 03-500).
SUBTASK 24-21-49-780-053 Prepare the Tubes (01-100, 01-500, 02-100, 02-500, 03-100 and 03-500) for the Pneumatic Pressure Test
Connect the tube to the outlet of the Pneumatic pressure testing rig.
Put a pressure of 14.5 psi (100 kPa) in the tube.
Put the tube in the water tank.
Let the pressure stay in the tube for 1 minute.
Make sure that the tube has no leaks. If the tube has leaks, reject the tube, Refer to Inspection-000 TASK 24-21-49-200-100.
Decrease the pressure in the tube to zero.
Disconnect the tube from the outlet of the Pneumatic pressure testing rig.
Remove the pressure seal cap or plug.
SUBTASK 24-21-49-780-054 Do the Pneumatic Pressure Test on the Tubes (01-100, 01-500, 02-100, 02-500, 03-100 and 03-500)
Figure: Hydraulic Pressure Testing Rig
Hydraulic Pressure Testing Rig

Figure: Pneumatic Pressure Testing Rig
Pneumatic Pressure Testing Rig

