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 72-32-41-440-001 No. 1 Bearing Front Support And Rear Support Assembly - Assemble, Assembly-001 - SBE 72-0391
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 the SPM TASK 70-41-00-400-501 and SPM TASK 70-41-02-410-501.
NOTE
Preliminary Requirements
Pre-Conditions
NONEConsumables, Materials and Expendables
| Name | Manufacturer | Part Number / Identification | Quantity | Remark |
|---|---|---|---|---|
| CoMat 10-077 APPROVED ENGINE OILS | LOCAL | CoMat 10-077 |
Safety Requirements
NONEProcedure
Refer to Figure.
Reference dimensions at location 0321. If required, use data written as a note in TASK 72-32-41-200-000 (INSPECTION/CHECK-000).
Table 1. Fits and Clearances (all dimensions are in inches) NEW PART
DIMENSIONS
WORN PART
DIMENSIONS
REJECT IF
PART IDENT
Size
Clearance
(Non-select)
MORE THAN
LOCATION 0321
No. 1 bearing front support
assembly No. 1 Bearing Front Support And Rear Support Assembly (72-32-41, 01-300)
inside diameter and No. 1
bearing rear support assembly
No. 1 Bearing Front Support And Rear Support Assembly (72-32-41, 01-400) outside
diameter
No. 1 bearing front support
16.2071
16.2071
assembly inside diameter
16.2109
0.0266
16.2109
0.0266
No. 1 bearing rear support
16.1785
0.0324
16.1785
0.0324
assembly outside diameter
16.1805
16.1805
Table 2. Fits and Clearances (all dimensions are in millimeters) NEW PART
DIMENSIONS
WORN PART
DIMENSIONS
REJECT IF
PART IDENT
Size
Clearance
(Non-select)
MORE THAN
LOCATION 0321
No. 1 bearing front support
assembly No. 1 Bearing Front Support And Rear Support Assembly (72-32-41, 01-300)
inside diameter and No. 1
bearing rear support assembly
No. 1 Bearing Front Support And Rear Support Assembly (72-32-41, 01-400) outside
diameter
No. 1 bearing front support
411.660
411.660
assembly inside diameter
411.757
0.675
411.757
0.675
No. 1 bearing rear support
410.935
0.822
410.935
0.822
assembly outside diameter
410.985
410.985
SUBTASK 72-32-41-220-068 Reference Fits and Clearances of No. 1 Bearing Front Support Assembly and No. 1 Bearing Rear Support Assembly at Location 0321
Refer to Figure.
Reference dimensions at location 0320. If required, use data written as a note in TASK 72-32-41-200-000 (INSPECTION-000).
Table 3. Fits and Clearances (all dimensions are in inches) NEW PART
DIMENSIONS
WORN PART
DIMENSIONS
REJECT IF
PART IDENT
Size
Clearance
(Non-select)
MORE THAN
LOCATION 0320
No. 1 bearing front support
assembly No. 1 Bearing Front Support And Rear Support Assembly ( 72-32-41, 01-300)
inside diameter and No. 1
bearing rear support assembly
No. 1 Bearing Front Support And Rear Support Assembly (72-32-41, 01-400) outside
diameter
No. 1 bearing front support
16.2698
Inft
16.2698
Inft
assembly inside diameter
16.2723
0.0074
16.2723
0.0074
No. 1 bearing rear support
16.2748
0.0025
16.2748
0.0025
assembly outside diameter
16.2772
Inft
16.2772
Inft
Table 4. Fits and Clearances (all dimensions are in millimeters) NEW PART
DIMENSIONS
WORN PART
DIMENSIONS
REJECT IF
PART IDENT
Size
Clearance
(Non-select)
MORE THAN
LOCATION 0320
No. 1 bearing front support
assembly No. 1 Bearing Front Support And Rear Support Assembly (72-32-41, 01-300)
inside diameter and No. 1
bearing rear support assembly
No. 1 Bearing Front Support And Rear Support Assembly (72-32-41, 01-400) outside
diameter
No. 1 bearing front support
413.254
Inft
413.254
Inft
assembly inside diameter
413.317
0.189
413.317
0.189
No. 1 bearing rear support
413.380
0.063
413.380
0.063
assembly outside diameter
413.443
Inft
413.443
Inft
SUBTASK 72-32-41-220-069 Reference Fits and Clearances of No. 1 Bearing Front Support Assembly and No. 1 Bearing Rear Support Assembly at Location 0320
Refer to Figure.
Lubricate the one o-ring (01-270) with CoMat 10-077 APPROVED ENGINE OILS. Install the o-ring into the groove in the No. 1 bearing rear support assembly (01-400).
Use the torque wrench or similar. After 1 hour, re-check the torque of four nuts (01-255). Go to Step, if the torque is less than 36 1bfin (4 Nm) or more than 45 1bfin (5 Nm).
SUBTASK 72-32-41-440-001 Assemble the No. 1 Bearing Support Assembly (01-240)
CAUTION
DO NOT TOUCH THE HOT PARTS WITHOUT PROTECTIVE GLOVES.CAUTION
HOT PARTS CAN CAUSE REDDENING AND BLISTERING OF THE SKIN IF THE HANDS ARE NOT PROTECTED.CAUTION
IMMERSE THE CONTACTED AREA IN COLD WATER FOR 10 MINUTES IF THE SKIN IS BURNED. IMMEDIATELY GET MEDICAL ATTENTION IF PAIN OR BLISTERING PERSISTS.
Figure: No. 1 Bearing Front Support Assembly and No. 1 Bearing Rear Support Assembly - Fits and Clearances
No. 1 Bearing Front Support Assembly and No. 1 Bearing Rear Support Assembly - Fits and Clearances
Figure: View of the No. 1 Bearing Support Assembly
View of the No. 1 Bearing Support Assembly
