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  TB l-1520-238-30-15
c. Bulk and Consumable Materials.
NOTE
The following items are mandatory consumables to perform
the inspection/correction. Other items may need to be
replaced depending upon their condition.
(1) The following consumables are required to perform the inspection in paragraph 8.
Part No.
Nomenclature
Pin,
Cotter
5315-00-241-7330
MS21 224-8
5310-00-004-5119
Nut,
Self-locking
MS21 224-6
531 O-00-004-51 18
Nut,
Self-locking
5315-00-l 850037
Pin,
Cotter
MS1 7825-4
531 o-00-961 -8390
Nut,
Self-locking
531 O-01 -184-0357
Nut,
Self-locking
5365-01-l 79-4301
Nut,
Self-locking
(2) The following consumables are required to perform the correction in paragraph 9, if required.
Part No.
Nomenclature
531 O-01 -176-7064
Nut, Self-locking
MS21
531 o-00-902-9369
Nut, Self-locking
Packing and Retainer
5330-01-040-7983
531 O-01 -176-7025
PLI Washer
d. Disposition. Contact the Logistical Point of Contact for disposition instructions for the
Gearbox
to the local OLR site.
e. Disposition of Hazardous Materials. N/A.
11. Special Tools, Jigs, and Fixtures Required. N/A.
12. Application.
a. Category of Maintenance.
(1) AVUM shall perform the following:
(a) One-time torque check.
(b) Partial removal, inspection, and replacement of T/R Head with blades attached.
(c) Removal and Replacement of T/R Gearbox.
(2) OLR site shall perform stud replacement.
b. Time Required.
(1) Total of 0.5 man-hour using one person to check torque.
(2) Total of three (3) man-hours using three persons to partially remove, inspect, and replace the
Tail Rotor Heads with blades attached.
(3) Total of nine (9) man-hours using two persons to remove and replace the T/R Gearbox.
6
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