4-68 REPAIR FIRST TURBINE ROTOR CASE (AVIM) (Continued)
In following step (6), difficulty may be encountered
when installing cover due to tight fit of cover
around air diffuser assembly. The tight fit is
necessary to ensure that machining chips do not
enter air diffuser assembly.
Install protective cover (8) and spring9), part of
skimming maintenance kit (T44), on first turbine
nozzle (10) and air diffuser assembly (11).
Measure tip clearance (Ref. Task 4-62, step 5) and
mark case (1) at the point of lowest tip clearance.
Use marking pencil (E38).
GO TO NEXT PAGE