TASK 72-32-05-200-005 PTO Drive Shaft Inner Roller Bearing - Examine, Inspection-005

DMC:V2500-A0-72-32-0502-00A-300A-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 72-32-05-200-005 PTO Drive Shaft Inner Roller Bearing - Examine, Inspection-005

Effectivity

FIG/ITEM

PART NO.

01-270

5A1428

01-270

5A1605

General

This TASK gives the procedure for the inspection of the roller bearing assembly. For other parts of the PTO drive shaft bearing and support refer to TASK 72-32-05-200-000 (INSPECTION-000).

Fig/item numbers in parentheses in the procedure agree with those used in the IPC.

The policy that is necessary for inspection is given in the SPM TASK 70-20-01-200-501.

The parts must be cleaned before any part is examined. Refer to the SPM TASK 70-11-22-300-503

All the parts must be visually examined for damage, corrosion and wear. Any defects that are not identified in the procedure must be referred to IAE.

Do not discard any part until you are sure there are no repairs available. Refer to the instructions in Repair before a discarded part is used again or oversize parts are installed.

Parts which should be discarded can be held although no repair is available. The repair of a discarded part could be shown to be necessary at a later date.

All parts must be examined to make sure that all repairs have been completed satisfactorily.

The practices and processes referred to in the procedure by the TASK numbers are in the SPM.

Bearings failing inspection may not be repaired or refurbished if:

They have been subjected to overheating because of loss of oil, the inner ring spinning on its hub, a compartment fire, or skidding.

They were involved in a major engine fire.

References

Refer to the SPM for the data on these items.

Bearing Inspection, TASK 70-29-01-290-501

Inspection of Parts, TASK 70-20-01-200-501

Some data on these items are contained in this TASK. For more data on these items refer to the SPM.

Method of Testing for Crack Indications

Chemical Processes

Surface Protection

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-32-05-110-060 Clean the Roller Bearing Inner (01-270)

    1. Clean the roller bearing outer assembly. Refer to TASK 72-32-05-100-000 (CLEANING-000).

    2. SUBTASK 72-32-05-220-088 Visually Inspect the Roller Bearing Inner (01-270) for Surface Damages

    1. Refer to Figure.

    2. Visually inspect, without magnification, the bearing and its components, checking in particular for defects as shown in the SPM TASK 70-29-01-290-501.

    3. Surface damages on the race ways of inner and outer ring are not accepted.

    3. SUBTASK 72-32-05-220-089 Dimensionally Examine the Roller Bearing Inner (01-270)

    1. Refer to Figure.

      2. Examine the outer diameter at location 1.

        1. If the clearance is between 1.4174 and 1.4175 in. (36.000 and 36.005 mm.)

        1. Accept

        2. Less than 1.4174 in. (36.000 mm)

        1. Reject

      3. Examine the inner diameter at location 2.

        1. If the diameter is between 1.2596 and 1.2598 in. (31.994 and 32.000 mm.)

        1. Accept

        2. More than 1.2598 in. (32.000 mm.)

        1. Reject

    4. SUBTASK 72-32-05-220-090 Do a Hardness Check of the Roller Bearing Inner (01-270)

    1. Refer to Figure.

      2. Do a check if the outer ring shows signs of having been overheated. The check must be made at the side face of the outer ring. Use a ROCKWELL A (HRA) Tester or equivalent.

        1. If the hardness is between HRA 81.8 and 83.4

        1. Accept

        2. Not as in Step

        1. Reject

      3. Remove raised metal

    5. SUBTASK 72-32-05-110-061 Demagnetize the Roller Bearing Inner (01-270)

    1. Demagnetize the bearing. Refer to the SPM TASK 70-11-22-300-503.

    2. Examine the bearing for residual magnetism.

    6. SUBTASK 72-32-05-620-055 Preserve the Roller Bearing Inner (01-270)

    1. Clean the bearing by dipping in the compound.

    2. Preserve the bearing in an assembled state by dipping in the compound. Refer to the SPM TASK 70-29-01-290-501.

    7. Figure: Roller bearing inner

    Roller bearing inner

Requirements After Job Completion

Follow-On Conditions

NONE