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
V2500-A5
Common Information
TASK 72-32-00-430-007-C00 LPC/Intermediate Case Module - Install The No. 1 Bearing Front Seal Support And No. 1 Bearing Compartment Scavenge Oil Tube, Assembly-007
General
This TASK gives the procedure to install the seal support, the front bearing compartment front Air Seal Assembly, the No. 1 Bearing compartment air tubes and the No. 1 Bearing compartment scavenge oil tube. For other parts of the LP Compressor/Intermediate Case Module, refer to TASK 72-32-00-430-000 (ASSEMBLY-000).
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 the SPM TASK 70-41-00-400-501 and SPM TASK 70-41-02-400-501.
To identify, lubricate and install seal rings, refer to the SPM TASK 70-64-02-640-501.
Special torque data and assembly tolerances are included in the procedure.
Lubricate all threads and abutment faces of nuts and bolts with CoMat 10-077 APPROVED ENGINE OILS, unless other lubricants are referred to in the procedure.
The abbreviation lntf shows an interference or tight fit. This causes REJECT IF MORE THAN to become REJECT IF LESS THAN. The abbreviation Clear shows a clearance fit.
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.
NOTE
NOTE
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| IAE 1J12442 Guide pin set | 0AM53 | IAE 1J12442 | 1 |
Consumables, Materials and Expendables
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| CoMat 10-077 APPROVED ENGINE OILS | LOCAL | CoMat 10-077 |
Spares
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| Sealing ring | 1 | |||
| Sealing ring | 1 | |||
| Sealing ring | 1 | |||
| Packing | 1 |
Safety Requirements
NONEProcedure
Refer to Figure.
Reference dimensions at location 0301. If required, use the data written as a note in TASK 72-32-41-200-000 (INSPECTION-000) and TASK 72-32-54-200-000 (INSPECTION-000).
Table 1. Fits and Clearances (all dimensions are in inches) NEW PART
WORN PART
DIMENSIONS
DIMENSIONS
PART IDENT
Size
Clearance
(Non-select)
REJECT IF
MORE THAN
LOCATION 0301
No. 1 Bearing Support (72-32-41, 01-240), Inside Diameter
No. 1 Ball Bearing (72-32-54, 01-150), Outer Diameter
No. 1 Bearing Support Inside Diameter
12.7947
12.7938
0.0000
No. 1 Bearing Outer Diameter
12.7952
12.7947
0.0014
lntf
Table 2. Fits and Clearances (all dimensions are in millimeters) NEW PART
WORN PART
DIMENSIONS
DIMENSIONS
PART IDENT
Size
Clearance
(Non-select)
REJECT IF
MORE THAN
LOCATION 0301
No. 1 Bearing Support (72-32-41, 01-240), Inside Diameter
No. 1 Ball Bearing (72-32-54, 01-150), Outer Diameter
No. 1 Bearing Support Inside Diameter
324.985
324.960
0.0000
No. 1 Ball Bearing Outer Diameter
325.000
324.985
0.04
Intf
SUBTASK 72-32-00-220-132-A00 Reference Fits and Clearances of the No. 1 Bearing Support and the No. 1 Ball Bearing at Location 0301 (Pre SBE 72-0391)
Refer to Figure.
Reference dimensions at location 0301. If required, use the data written as a note in TASK 72-32-41-200-000 (INSPECTION-000) and TASK 72-32-54-200-000 (INSPECTION-000).
Table 3. Fits and Clearances (all dimensions are in inches) NEW PART
WORN PART
DIMENSIONS
DIMENSIONS
PART IDENT
Size
Clearance
(Non-select)
REJECT IF
MORE THAN
LOCATION 0301
No. 1 Bearing Front Support Assembly No. 1 Bearing Front Support And Rear Support Assembly (72-32-41, 01-300), Inside Diameter
No. 1 Ball Bearing (72-32-54, 01-150), Outer Diameter
No. 1 Bearing Front Support Assembly Inside Diameter
12.7936
12.7927
Intf
0.0011
No. 1 Ball Bearing Outer Diameter
12.7952
12.7947
0.0025
Intf
Table 4. Fits and Clearances (all dimensions are in millimeters) NEW PART
WORN PART
DIMENSIONS
DIMENSIONS
PART IDENT
Size
Clearance
(Non-select)
REJECT IF
MORE THAN
LOCATION 0301
No. 1 Bearing Front Support Assembly No. 1 Bearing Front Support And Rear Support Assembly (72-32-41, 01-300), Inside Diameter
No. 1 Ball Bearing (72-32-54, 01-150), Outer Diameter
No. 1 Bearing Front Support Assembly Inside Diameter
324.959
324.934
Intf
0.026
No. 1 Ball Bearing Outer Diameter
325.000
324.985
0.066
Intf
SUBTASK 72-32-00-220-132-B00 Reference Fits and Clearances of the No. 1 Bearing Support and the No. 1 Ball Bearing at Location 0301 (SBE 72-0391)
SBE 72-0391: New separate type No. 1 Bearing Support Assembly.
Refer to Figure.
Make sure that the Fan Frame Assembly is installed horizontally on the turnover stand. Refer to TASK 72-32-00-430-006 (ASSEMBLY-006).
SUBTASK 72-32-00-430-188 Turn the Fan Frame Assembly Vertical with the Front End Up
Lubricate No. 1 Bearing Front Face Seal Assembly (72-32-53, 01-400) packing1 off with the CoMat 10-077 APPROVED ENGINE OILS.
Lubricate (02-130) sealing ring 1 off with the CoMat 10-077 APPROVED ENGINE OILS.
Align the top of the No. 1 Bearing Front Seal Support with top of the No. 1 Bearing Front Oil Seal. Make sure that three of 15 scallops in the No. 1 Bearing Front Seal Support are aligned with the three lugs of the short holder.
NOTE
The short holder is installed to the No. 1 Bearing Front Oil Seal in TASK 72-32-50-440-001 (ASSEMBLY-001).
Attach the No. 1 Bearing Front Seal Support ENGINE-NO.1 BEARING COMPARTMENT FRONT OIL SEAL (72-32-55, 01-100) to the No. 1 Bearing Front Oil Seal.
Replace the three bolts (part of the short holder) with the three guide pins (part of IAE 1J12442 Guide pin set 1 off).
SUBTASK 72-32-00-430-189-A00 Install the No. 1 Bearing Front Seal Support to the No. 1 Bearing Support (Pre SBE 72-0391)
Lubricate No. 1 Bearing Front Face Seal Assembly (72-32-53, 01-400) packing 1 off with the CoMat 10-077 APPROVED ENGINE OILS.
Lubricate LP Compressor (LPC) - Intermediate Structure Module (72-32-00, 02-130) sealing ring 1 off with the CoMat 10-077 APPROVED ENGINE OILS.
Align the top of the No. 1 Bearing Front Seal Support with top of the No. 1 Bearing Front Oil Seal. Make sure that three of 15 scallops in the No. 1 Bearing Front Seal Support are aligned with the three lugs of the short holder.
NOTE
The short holder is installed to the No. 1 Bearing Front Oil Seal in TASK 72-32-50-440-001 (ASSEMBLY-001).
Attach the No. 1 Bearing Front Seal Support ENGINE-NO.1 BEARING COMPARTMENT FRONT OIL SEAL (72-32-55, 01-100) to the No. 1 Bearing Front Oil Seal.
Replace the three bolts (part of the short holder) with the three guide pins (part of IAE 1J12442 Guide pin set 1 off).
SUBTASK 72-32-00-430-189-B00 Install the No. 1 Bearing Front Seal Support to the No. 1 Bearing Support (SBE 72-0391)
SBE 72-0391: New separate type No. 1 Bearing Support Assembly.
Refer to Figure.
Lubricate LP Compressor (LPC) - Intermediate Structure Module (72-32-00, 01-865) sealing ring 1 off with the CoMat 10-077 APPROVED ENGINE OILS and install it in to the hole in the seal support.
Lubricate LP Compressor (LPC) - Intermediate Structure Module (72-32-00, 01-870) sealing ring 1 off with the CoMat 10-077 APPROVED ENGINE OILS and install it in to the groove in the oil tube NO.1 BEARING COMPARTMENT SCAVENGE OIL TUBE (72-32-58, 01-100).
SUBTASK 72-32-00-430-190 Install the No. 1 Bearing Compartment Scavenge Oil Tube
Figure: Install the Lock Pin in to Position to Lock the Handle of the Turnover Stand
Install the Lock Pin in to Position to Lock the Handle of the Turnover Stand

Figure: Install the No. 1 Bearing Front Seal Support and the Air Feed Brackets on to the No. 1 Bearing Support
Sheet 1

Figure: Install the No. 1 Bearing Front Seal Support and the Air Feed Brackets on the No. 1 Bearing Support
Sheet 2

Figure: Apply Jointing Compound to the Mating Face of the No. 1 Bearing Front Seal Support
Sheet 3

Figure: Install the No. 1 Bearing Compartment Scavenge Oil Tube
Install the No. 1 Bearing Compartment Scavenge Oil Tube

Figure: The No. 1 Bearing Support and No. 1 Ball Bearing Fits and Clearances
The No. 1 Bearing Support and No. 1 Ball Bearing Fits and Clearances

