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TM 55-2840-231-23
CHAPTER 5
ACCESSORY GEARBOX
This chapter contains procedures for the maintenance and preservation of the accessory gearbox. Para-
graphs following outline disassembly, inspection, repair, and additional requirements needed to maintain
the accessory gearbox and related parts. Procedures requiring maintenance on the Aviation Intermediate
Maintenance (AVIM) level are specified and must be performed as such. Paragraphs in which the mainte-
nance level is not specified shall be considered Aviation Unit Maintenance (AVUM) and may be performed
at this level or a higher level of maintenance.
Page
Accessory Gearbox Maintenance Procedures
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Gearbox - Inspection
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Gearbox External Seals - Replacement (AVIM)
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Gearbox External Stud - Replacement
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Magnetic Chip Detectors - Removal, Inspection, Cleaning, Installation, and
Testing
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Gearbox Housing and Cover - Painting
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ACCESSORY GEARBOX MAINTENANCE PROCEDURES.
Visually inspect all subassemblies and accessories removed from the engines accessory gearbox. Check
for loose or missing parts. Note any damage or excessive wear. Repair damaged parts where possible.
Replace damaged parts that cannot be repaired. Disassembly procedures provided enable required cleaning,
inspection, repair or replacement.
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