Textron Bell 412, Руководство по обслуживанию

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BHT-412-MM-2
5-00-00
Page 160
Rev. 16 26 FEB 2013 Export Classification C, ECCN EAR99
CAUTION
INDEXING FLATS OF 0.015 INCH (0.381 MM)
( T W O P L A C E S 1 8 0 ° A PA R T ) O N D I S C
ASSEMBLIES ARE PREFERENTIALLY ORIENTED
AND SHOULD NOT BE DISTURBED IN HANDLING.
I F O R I E N TAT I O N I S I N A D V E R T E N T LY
DISTURBED, REINDEX DISCS BY ALTERNATING
I N D E X F L AT S O N E A C H D I S C 6 0
°
F R O M
ADJACENT DISC.
Chapter 65 3. Remove driveshafts from helicopter.
4. Visually examine driveshafts for nicks and dents. Examine
flange mating surfaces and pilot diameters for evidence of
fretting, wear, and/or corrosion.
5. Visually examine coupling 412-340-610 laminations for
evidence of wear and or corrosion.
6. After intermediate gearbox, tail rotor gearbox, and hanger
assemblies have been inspected, install tail rotor driveshafts.
INTERMEDIATE GEARBOX
Chapter 65
BHT-412-CR&O 1. Visually inspect exterior surfaces of intermediate gearbox
for evidence of seeping, leaking, corrosion, and/or damage.
BHT-412-CR&O 2. Inspect output quill assembly as follows:
Chapter 65
WARNING
CAUSE OF ANY DISCOLORATION SHALL BE
DETERMINED AND CORRECTED PRIOR TO
NEXT FLIGHT.
SPECIAL INSPECTIONS
5-31. EACH 2500 HOURS OF TAIL ROTOR DRIVE SYSTEM OPERATION (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER