TASK 70-45-01-450-501 Procedure To Install Retaining Rings

DMC:V2500-00-70-45-01-00A-720A-D|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 70-45-01-450-501 Procedure To Install Retaining Rings

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NONE

Consumables, Materials and Expendables

NONE

Spares

NONE

Safety Requirements

NONE

Procedure

    1. General

      1. Plain retaining rings

      1. Plain retaining rings can have a lightly rounded edge on one side and a sharp edge on the opposite side. The lightly round edge, which is caused by the stamping die, is not a bevel, so the ring must not be put in the beveled retaining ring group.

      2. Plain retaining rings must only be installed in grooves with 90 degree sides. When one side of a plain retaining ring is seen to have a very sharp corner, that side must be installed away from the part to be locked, so that the sharp edge side pushes against the groove.

      2. Beveled retaining rings

      1. Beveled retaining rings have the added function that they can decrease the end play, from the part to be locked. This type of ring has a 15 degree bevel on one side, which is installed in a mating beveled groove, on the side away from the part to be locked.

      2. Beveled retaining rings must only be used with beveled grooves, and must always be installed with the flat side of the ring against the part to be locked, as shown in Figure.

    2. Figure: Installed beveled retaining ring

    Installed beveled retaining ring

Requirements After Job Completion

Follow-On Conditions

NONE