4-40 INSTALL NO. 4 AND 5 BEARING PACKAGE SEALS (AVIM) (Continued)
48. Check axial clearance between fourth stage
power turbine rotor (59) and fourth stage
power turbine nozzle (86) at blade roots (94).
Use 0.104 inch and 0.228 inch bent wire gages.
(Appendix E) (95) inserted between fourth
stage power turbine rotor blades (74). Axial
clearance shall not be less than 0.104 inch or
more than 0.228 inch.
If axial clearance is not within limits, do
steps 37. through 48. Ring spacer may be
installed or removed as necessary. Re-
check clearance. If clearance still is not
within limits, replace power turbine
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