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
MS21 224-8
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:
(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