TASK 79-22-49-700-101 Engine Scavenge Oil Tubes - Do a Pressure Test, Testing-001

DMC:V2500-A0-79-22-4900-00A-362A-C|Issue No:001.00|Issue Date:2013-11-01

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 79-22-49-700-101 Engine Scavenge Oil Tubes - Do a Pressure Test, Testing-001

Effectivity

FIG/ITEM

PART NO.

14-500

740-5747-505

14-100

740-5751-507

12-500

740-5755-511

13-100

740-5757-507

13-500

740-5763-507

12-100

740-5793-507

12-100

740-5793-509

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 scavenge oil tubes must be cleaned and inspected before this pressure test, Refer to Cleaning-000 TASK 79-22-49-100-100 and Inspection-000 TASK 79-22-49-200-100.

The Test Equipment Specification

To do the test on the scavenge oil tubes use equipment equivalent to that shown in Figure and Figure.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Hydraulic pressure testing rigLOCALHydraulic pressure testing rig
Pneumatic pressure testing rigLOCALPneumatic pressure testing rig
MS21913-4 Blanking plug0AM53MS21913-4

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 79-22-49-780-051 Do the Hydraulic Pressure Test on the Tubes (12-100, 12-500, 13-100, 13- 500, 14-100 and 14-500).

    1. 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.

    2. Make sure that the pressure control valve is set to zero.

    4. Slowly turn the pressure control valve until the fluid comes out of the bleed valve.

    5. Close the bleed valve.

    6. 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 (12-100, 12-500, 13-100, 13-500, 14- 100 and 14-500) to 1000 psi (6895 kPa).

    7. Let the pressure stay in the tube for 2 minutes.

    8. Make sure that the tube has no leaks. If the tube has leaks, reject the tube. Refer to Inspection-000 TASK 79-22-49-200-100.

    9. Decrease the pressure in the tube to zero.

    11. Open the bleed valve.

    12. Disconnect the tube from the outlet of the Hydraulic pressure testing rig and the bleed valve adapter.

    13. 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.

    2. SUBTASK 79-22-49-780-052 Prepare the Tubes (12-100, 12-500, 13-100, 13-500, 14-100 and 14-500) for the Pneumatic Pressure Test.

    1. Install an applicable MS21913-4 Blanking plug to the tubes.

    3. SUBTASK 79-22-49-780-053 Do the Pneumatic Pressure Test on the Tubes (12-100, 12-500, 13-100, 13- 500, 14-100 and 14-500).

    1. Connect the tubes to the outlet of the Pneumatic pressure testing rig.

    2. Put a pressure of 14.5 psi (100 kPa) in the tube.

    3. Put the tube in the water tank.

    4. Let the pressure stay in the tube for 1 minute.

    5. Make sure that the tube has no leaks. If the tube has leaks, reject the tube, Inspection-000 TASK 79-22-49-200-100.

    6. Decrease the pressure in the tube to zero.

    7. Disconnect the tube from the outlet of the Pneumatic pressure testing rig.

    8. Remove the MS21913-4 Blanking plug from the tube.

    4. Figure: Hydraulic Pressure Testing Rig

    Hydraulic Pressure Testing Rig

    Figure: Pneumatic Pressure Testing Rig

    Pneumatic Pressure Testing Rig

Requirements After Job Completion

Follow-On Conditions

NONE
Manufacturer Code:0AM53
Enterprise Name:IAE INTERNATIONAL AERO ENGINES AG
BU Name:NULL
Building:SUITE 400
Street:628 HEBRON AVENUE
City:GLASTONBURY
State:CT
Zip Code:06033
Country:USA
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Tool Number:Hydraulic pressure testing rig
Tool Name:Hydraulic pressure testing rig
Manufacturer Code:0AM53
Tool Number:MS21913-4
Tool Name:MS21913-4 Blanking plug
Manufacturer Code:LOCAL
Tool Number:Pneumatic pressure testing rig
Tool Name:Pneumatic pressure testing rig