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 TB 1-1520-240-20-123
10. Supply/Parts and Disposition.
a.
Parts Required. Items cited in paragraph 6 may be required to replace defective items.
b. Requisitioning Instructions. Requisition replacement parts using normal supply procedures. All req-
uisitions shall use project code (CC 57-59) "X01", "(X-RAY-ZERO-ONE)".
NOTE
Project code "X01", is required to track and establish a data base of
stock fund expenditures incurred by the field as a result of SOF actions.
c.
Bulk and Consumable Materials. N/A.
d. Disposition. Hold any discrepant part/component for possible rework instructions from logistical
point of contact in paragraph 16B.
e.
Disposition of Hazardous Material. N/A.
11. Special Tools and Fixtures Required. N/A.
12. Application .
a.
Category of Maintenance.
(1) AVUM for inspection and reinstallation as required.
(2) AVIM for rework of the seal assembly.
b.
Estimated Time Required-
(1) To conduct the initial inspection --
(a) Total of 0.5 man--hours using 1 person.
(b) total of 0.5 hour downtime for one end item.
(2) To remove and replace a seal assembly --
(a) Total of 16 man--hours using 4 persons.
(b) Total of 4 hours downtime for one end item.
c.
Estimated Cost Impact to the Field.
NOMENCLATURE
PN/NSN
QUANTITY
COST EACH
TOTAL
SLIDER SHAFT
145R3131-1/
2
$111.74
$223.48
SEAL ASSEMBLY
SLIDER SHAFT
145R3131-2/
2
$162.08
$324.16
SEAL ASSEMBLY
TOTAL COST PER AIRCRAFT = $547.64
d.
TB/MWOs to be Applied Prior to or Concurrently with this Inspection. N/A.
e. Publications Which Require Change as a result of this Inspection -- TM 55-1520-240-23 and TM
1-1520-252-23 shall be changed to reflect this Technical Bulletin. A copy of this Technical Bulletin shall be
inserted in the appropriate TM as authority to implement the change until the printed change is received.
Changes to the TM's will be as follows --
(1) TM 55-1520-240-23, Task 6-50, Instruction 33, shall be changed to read as follows: "Position
seal halves (64 and 65) on shaft (54). Apply a light coat of oil (E253), (E254), or (E254.1) to the thread of 12
bolts (66). Install the bolts and washers (67). Ensure that a minimum clearance of 0.050 inch exists between
the rubber seal and the surface of the rotor shaft. If a minimum clearance does not exist, move the seal (64
or 65) radially as far away from the shaft as possible and recheck clearance. Torque the bolts to 60 inch--
pounds."
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