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 72-50-53-100-102 No. 5 Bearing Pressure Oil Tube - Clean, Cleaning-002
General
This TASK gives the procedure to clean the No 5 bearing pressure tube. For the other parts of the exhaust case and fittings, refer to Cleaning - 000 TASK 72-50-53-100-100.
The practices and processes referred to in the procedure by the TASK numbers are in the SPM.
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.
Reference
Refer to General Cleaning, Section 70-10-00, in the Standard Practices Manual (SPM) for important cleaning information that supplements the TASKS.
When more than one TASK or SUBTASK is specified for a part, refer to Section 70-10-00 in the SPM for selection of the applicable cleaning TASK or SUBTASK.
Refer to Section 70-11-00 in the SPM for the TASK numbers given below.
Preliminary Requirements
Pre-Conditions
NONESupport Equipment
NONEConsumables, Materials and Expendables
NONESpares
NONESafety Requirements
NONEProcedure
Degrease parts by aqueous cleaning.
Remove the grease and oil. Refer to SPM TASK 70-11-03-300-503.
SUBTASK 72-50-53-110-174 Remove the Grease and Oil
Local removal of carbon by alkaline gel.
Remove the coke or carbon. Refer to SPM TASK 70-11-55-110-501.
SUBTASK 72-50-53-110-113-001 Remove the Carbon or Coke
Clean the components (long soak, for cobalt and nickel base alloys and non-corrosion resistant steels).
Remove the coke or carbon. Refer to SPM TASK 70-11-13-300-503.
SUBTASK 72-50-53-110-113-002 Remove the Carbon or Coke
Removal of carbon from fuel and oil tubes by bake method.
Remove the carbon. Refer to the SPM TASK 70-11-52-110-501
SUBTASK 72-50-53-110-113-003 Remove the Carbon or Coke