Textron Bell 412 - 5-34. EACH 3000 HOURS OF TRANSMISSION (412-040-004) OPERATION; MAIN TRANSMISSION (412-040-004)

BHT-412-MM-2
5-00-00
15 DEC 2015 Rev. 23 Page 177
Export Classification C, ECCN EAR99
SPECIAL INSPECTIONS
5-34. EACH 3000 HOURS OF TRANSMISSION (412-040-004) OPERATION
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER
DATE: __________________W.O. _____________________
FACILITY: __________________________________________
HELICOPTER S/N: ___________________________________
REGISTRY NO.: _____________________________________
TOTAL TIME:_______________________________________
SIGNATURE:________________________________________
NOTE
Accomplish each 3000 hours of transmission
412-040-004 operation on helicopters S/N 36020
through 36999, S/N 37002 through 37999, and
helicopters modified by 412-570-001-103 or Post
BHT-412-SI-74 (412SP to 412HP Upgrade).
Chapter 63
BHT-412-CR&O
MAIN TRANSMISSION (412-040-004)
NOTE
Refer to the BHT-412-CR&O for disassembly,
cleaning, assembly, inspection procedures, wear,
and damage limits.
Chapter 63
BHT-412-SI-12
BHT-412-CR&O
1. Visually examine exterior surfaces of rotor brake quill
412-040-123-103 for evidence of oil seeping and/or leaking.
Visually examine area of shaft seal for evidence of seal leakage.
NOTE
Do not remove brake disc from drive flange. To
facilitate removal of rotor brake quill from
transmission, remove nut retaining drive flange and
remove disc and flange as an assembly.
BHT-412-CR&O 2. Remove rotor brake quill from transmission. Refer to
Component Overhaul Schedule.