TB 1-1520-237-20-194
(2) Retail Stock. Report receipt of this TB in accordance with (IAW) paragraph 14.c. Upon receipt
of this TB commanders and others maintaining retail stock at installation level and below shall contact the
supported aviation unit to perform the inspection required by paragraph 8 and the corrective procedures of
paragraph 9 on discrepant material. Disposition of discrepant material will be IAW paragraph 10. Report com-
pliance with this TB IAW paragraph 14.d.(2)
g. Components/Parts in Work (Depot Level and Others) - Items listed in paragraphs 6 and 7 in work
will not be issued until compliance with this TB.
Task/inspection Suspense Date. Within next 10 flight hours/14 days.
2.
this TB.
Summary of the Problem.
4.
a. Spherical elastomeric bearing assemblies, vendor P/N SB7001-048 (previous configuration of cur-
rent item 12, Figure 329 of the referenced TM), procured under a spares contract initially did not include the
sleeve bearing, P/N SB5203-102. Two instances of the elastomeric spindle bearing assembly being installed
onto the aircraft without the sleeve bearing have been found. Lack of the sleeve bearing will cause early failure
of the elastomeric bearing and spindle assembly because of the excessive play, in addition to the direct con-
tact of the elastomeric bearing to the spindle. The contract has been updated and new bearing assemblies
are now delivered with the sleeve bearing installed. Provisioning and Technical Manuals reflect the currently
procured assembly in addition to requiring inspection for and installation of the sleeve bearing if necessary.
b.
For manpower/downtime and funding impacts, see paragraph 12.
c. The purpose of this TB is to require a one time inspection of the main rotor spindle bearings, P/N
SB7001-048, for missing teflon sleeve bearings, P/N SB5203-202.
End items to be inspected. All H-60 series aircraft.
5.
Assembly Components to be inspected.
6.
NOMENCLATURE
PART NUMBER
NATIONAL STOCK NUMBER
Spindle Bearing Assy
161581-082-9250
70102-08100-044
Spindle Bearing Assy
70102-08100-056
Parts to be inspected.
7.
NOMENCLATURE
PART NUMBER
NATIONAL STOCK NUMBER
SB7001-048
Bearing, Elastomeric
8. Inspection Procedures. Visually verify the existence of the sleeve bearing P/N SB5203-202, with-
in every elastomeric bearing, P/N SB7001-048.
a. Special Tools. Contact the local LAR or the logistical point of contact (POC) identified in paragraph
NOTE
Only the "special" feeler gauge from your local LAR or the logistical POC
should be used for this inspection
b. Inspection. On Aircraft.
2
Previous Page
