TASK 72-42-33-440-001 No. 4 Bearing Front Face Seal Assembly - Assemble The No. 4 Bearing Front Face Seal Assembly, Assembly-001

DMC:V2500-A0-72-42-3300-00A-710A-B|Issue No:005.00|Issue Date:2021-02-01

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 72-42-33-440-001 No. 4 Bearing Front Face Seal Assembly - Assemble The No. 4 Bearing Front Face Seal Assembly, Assembly-001

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.

For all parts identified in a different Chapter/Section/Subject, the applicable Chapter/Section/Subject comes before the Fig/item number.

For standard torque data and procedures, refer to SPM TASK 70-41-00-400-501 and TASK 70-41-02-400-501.

Special torque data and assembly tolerances are included in the procedure.

Lubricate all threads and abutment faces of nuts and bolts with CoMat 10-039 ENGINE OIL, unless other lubricants are referred to in the procedure.

To identify, lubricate and install seal rings, refer to SPM TASK 70-64-02-640-501.

The number for each radial location must be identified in a clockwise direction. These start at the engine top position when you look from the rear of the engine, unless stated differently in the procedure.

Refer to TASK 72-42-00-990-001 for a sectional view of the Diffuser and Combustion Group.

NOTE

To identify the consumable materials refer to the PCI.

NOTE

Special tools are identified in the procedure by the tool primary number.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
IAE 6F10029 Air flow test cart0AM53IAE 6F100291
IAE 1P16024 Fixture0AM53IAE 1P160241
IAE 1P16045 cover0AM53IAE 1P160451

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 10-039 ENGINE OILLOCALCoMat 10-039

Spares

NameManufacturerPart Number / IdentificationQuantityRemark
Cotter Pin4

72-42-33, 01-280

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-42-33-440-051 Install the Seal Ring (01-160) in to the No. 4 Bearing Seal Support Assembly (01-020)

      NOTE

      Check for "P5, P10, P15 or P20 near the areas, where the part number is marked on the part. Make sure the supplied seal ring 01-160, 01-162, 01-164, 01-166, or 01-168 is the correct size based on the part marking."

    1. Refer to Figure and Figure.

    2. Put the No. 4 bearing seal support assembly (01-020) on a bench with the flange up.

    3. Move the No. 4 bearing seal support assembly so that the offset pin is at the 12 o'clock position, Figure.

      4. Install the seal ring (01-160) in the seal ring groove, Figure.

      1. Put the larger diameter of the seal ring at the bottom of the seal groove.

      2. Put the seal ring gap at the bottom vertical centerline of the No. 4 bearing seal support assembly (opposite the offset pin).

    2. SUBTASK 72-42-33-440-059 Install the Sleeve Spacers (01-200) to the Pins in the No. 4 Bearing Seal Support Assembly

    1. Refer to Figure

    2. Install the sleeve spacers (01-200) to the two pins that are almost 90 degrees from both sides of the offset pin.

    3. SUBTASK 72-42-33-440-052 Install the Springs (01-180) in to the Holes in the No. 4 Bearing Seal Support Assembly

    1. Refer to Figure.

    2. Install the springs (01-180) in to the holes in the No. 4 bearing seal support assembly (01-020).

    4. SUBTASK 72-42-33-440-053 Install the No. 4 Bearing Face Seal Assembly (01-220) in to the No. 4 Bearing Seal Support Assembly

    1. Refer to Figure.

    2. Put the face seal assembly (01-220) above the seal support assembly.

      NOTE

      The wide slots will slide over the sleeve spacers.

    3. Align the offset slot with the offset pin and the wide slots with the pins that have the sleeve spacers.

    4. Align the guides (01-240) in the face seal assembly with the springs in the No. 4 bearing seal support assembly.

    5. Lower the face seal assembly and engage the guides in the springs and the pins in the slots.

    5. SUBTASK 72-42-33-440-054 Install the Collars (01-260) and the Cotter Pins (01-280)

    1. Refer to Figure.

    2. Install the collars (01-260) over the pins.

    3. Align the holes in the collars with the holes in the pins.

      NOTE

      Do not bend the cotter pins until the pressure test is complete.

    4. Put No. 4 Bearing Front Face Seal Assembly (72-42-33,01-280) cotter pins 4 off through the holes in the collars and the pins.

    6. SUBTASK 72-42-33-440-055 Install the No. 4 Bearing Front Seal Assembly in to the Fixture

    1. Refer to Figure.

    2. Remove the cover from the IAE 1P16024 Fixture 1 off and make an inspection of the rubber rings and the neoprene sealing surfaces.

    3. Remove the sealing plate and make an inspection of the micro finish for nicks and scratches.

    4. Install the sealing plate with the micro finish up in to the fixture.

    5. Attach the sealing plate with the six capscrews.

    6. Remove the clamp ring from the fixture.

    7. Carefully lower the No. 4 bearing front seal assembly in to the fixture until the face of the seal assembly touches the fixture sealing plate.

    8. Install the clamping ring over the seal assembly outer diameter.

    9. Install and tighten the 12 capscrews.

    10. Install the cover on the fixture.

    11. Tighten the lifting clamp on the center post.

      NOTE

      The fitting on the fixture and the air flow panel are identified and are different sizes to eliminate the possiblity of error.

    12. Connect the hoses from the IAE 6F10029 Air flow test cart 1 off to the quick disconnect fittings.

    7. SUBTASK 72-42-33-720-051 Do a Check for Leakage of the No. 4 Bearing Front Seal Assembly, and 72-42-33-990-007

    1. Refer to Figure

      2. Do the air flow check of the oil seal assembly with the procedure in step (1) or the procedure in step (2).

      1. With the air pressure at 80 psi (551.6 kPa) the leakage shall not be more than 4.5 cubic feet (0,13 cubic meters) for each minute of free air when dimension B is 3.240 in. to 3.270 in. (82.30 mm to 83.06 mm).

      2. With the air pressure at 50 psi (344.7 kPa) the leakage shall not be more than 2.8 cubic feet (0,08 cubic meters) for each minute of free air when dimension B is 3.240 in. to 3.270 in. (82.30 mm to 83.06 mm).

      3. If leakage exceeds limit do steps B. and C.

      3. Remove the assembly, turn the seal plate over, and do a check for seal ring leakage.

      1. Release the air pressure.

      2. Remove the cover from the fixture.

      3. Remove the capscrews which hold the clamp ring.

      4. Remove the clamp ring.

      5. Remove the No. 4 bearing front seal assembly.

      6. Remove the capscrews securing the sealing plate.

      7. Remove the sealing plate.

      8. Turn the sealing plate so the rubber seal is up.

      9. Install and attach the sealing plate.

      10. Install the No. 4 bearing front seal assembly so that the face of the seal touches the sealing plate.

      11. Install the clamp ring.

      12. Install the capscrews which hold the clamp ring.

      13. Attach the cover by tightening the lifting clamp on the center post.

      4. Do a check for leakage of the seal ring.

      1. Apply air pressure at 80 psi (551.6 kPa) and check the air flow.

      2. If the seal assembly still leaks there is leakage past the seal ring.

      3. If leakage is now within limits on the seal ring, No. 4 bearing face seal assembly is not properly engaged on the sealing plate.

    5. Replace or repair the seal ring if there is leakage past the seal ring.

      6. If there is leakage past the face seal of the No. 4 bearing seal assembly proceed as follows.

      1. Remove the No. 4 bearing front seal assembly from the fixture per steps B. (1) through (5).

      2. Compress and release the face seal assembly to make sure that it is not sideways, or so that it cannot move freely.

      3. Remove the face seal from the No. 4 bearing front seal assembly and lap it, if necessary.

    7. Assemble the No. 4 bearing front seal assembly, refer to SUBTASK 72-42-33-440-053 and SUBTASK 72-42-33-440-054.

    8. Install the No. 4 bearing front seal assembly in to the fixture, refer to Step.

    9. Do a check for leakage per Step A.

    10. Remove the No. 4 bearing front seal assembly from the fixture.

    8. SUBTASK 72-42-33-440-056 Bend the Cotter Pins Around the Collars

    1. Refer to Figure.

    9. SUBTASK 72-42-33-440-057 Install the Cover on to the No. 4 Bearing Front Seal Assembly

    1. Install the IAE 1P16045 cover 1 off on to the No. 4 beraing front seal assembly.

      .

    10. Figure: Find the offset pin hole

    Find the offset pin hole

    Figure: Install The Seal Ring

    Install The Seal Ring

    Figure: Install the springs and the No. 4 bearing face seal assembly

    Install the springs and the No. 4 bearing face seal assembly

    Figure: Install the collars and the cotter pins

    Install the collars and the cotter pins

    Figure: Install the No. 4 bearing front seal assembly in the IAE 1P16024 fixture

    Install the No. 4 bearing front seal assembly in the IAE 1P16024 fixture

    Figure: Do a check for air leakage

    Do a check for air leakage

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Added note and revised figure. (20VC191)

Link not Found
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
Link not Found
Manufacturer Code:LOCAL
Supply Number:CoMat 10-039
Type:sp01
Supply Short Name:
Supply Name:CoMat 10-039 ENGINE OIL
Specification Groups:
Doc NumberType
DELETED
Suppliers:
ManufacturerRemarks
LOCAL
Manufacturer Code:0AM53
Tool Number:IAE 1P16024
Tool Name:IAE 1P16024 Fixture
Manufacturer Code:0AM53
Tool Number:IAE 1P16045
Tool Name:IAE 1P16045 cover
Manufacturer Code:0AM53
Tool Number:IAE 6F10029
Tool Name:IAE 6F10029 Air flow test cart