TM 55-1520-240-23-4
5-21.1
INSPECT PITCH-VARYING SHAFTS
5-21.1
INITIAL SETUP
Applicable Configurations:
All
Tools:
None
Materials:
None
Personnel Required:
Inspector
References:
TM 1-1520-253-23
Equipment Condition:
Battery Disconnected (Task 1-39)
Electrical Power Off
Hydraulic Power Off
Forward or Aft Work Platforms Open (Task 2-2)
NOTE
Paint removal is not required for shaft
inspection.
Inspect shafts on forward and aft
heads in same manner.
Rotary-wing blades shall be installed
during inspection and resting on
droop stops.
1.
Check entire visible portion of pitch-varying
shaft (1) for cracks. Pay special attention to
leading edge side of shaft between flange (2)
and horizontal hinge pin barrel (3) from oil tank
(4) to droop stop mounting boss (5). There shall
be no cracks. If a crack is suspected, refer to
TM 1-1520-253-23.
FOLLOW-ON MAINTENANCE:
Close work platforms (Task 2-2).
END OF TASK
5-106
