4-70 REPAIR FIRST TURBINE ROTOR CASE (AVIM) (Continued)
In following step, do not stop rotation
during the clockwise or counterclock-
wise movement until stops are reached.
Stopping cutter before stops are reached
may cause deep gouges or chatter
marks in case
25. Place hands on collar (29) and rotate milling
machine (15) clockwise until front stop is
reached and immediately rotate milling machine
(15) counterclockwise until rear stop is reached.
Do not advance cutter more than one
increment for any cut. All clockwise
and counterclockwise rotations must be
made slowly and without stopping.
26. Turn adjusting knob (27) one increment clock-
wise. One increment clockwise advances cutter
(20) radially 0.001 inch.
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