Textron Bell 412, Руководство по обслуживанию

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BHT-412-MM-2
5-00-00
01 JUN 2018 Rev. 26 Page 215 Export Classification C, ECCN EAR99
e. Remove and inspect tail rotor driveshafts.
f. Remove input and output drive quill from intermediate
gearbox and inspect gear teeth on pinion and gear for damage
with a 10X magnifying glass. If no evidence of scoring or
scuffing is found and there is no mechanical damage that
would render gearbox unserviceable, reassemble and perform
step 3. If gear teeth are scuffed or scored or gearbox has
sustained other damage, gearbox shall be removed and an
overhaul evaluation performed (Make an entry in the
component record to show the reason for removal was
compressor stall or surge) and step g and step h shall be
accomplished.
g. Remove tail rotor gearbox from helicopter and remove
input quill. Inspect gear teeth on pinion and gear for damage
with a 10X magnifying glass. If no evidence of scoring or
scuffing is found and there is no other damage that would
render gearbox unserviceable, it may be reassembled and
reinstalled for continued use. If gear teeth are scored or scuffed
or there is other damage that would render gearbox
unserviceable, gearbox shall be removed and an overhaul
evaluation performed. Make an entry in the component record
to show the reason for removal was compressor stall or surge.
h. Remove tail rotor drive quill from transmission and
inspect gear teeth for damage with a 10X magnifying glass. If
there is no indication of scoring or scuffing and there is no other
damage that would render transmission unserviceable, it is
suitable for continued use. If gear teeth are scored or scuffed or
there is other damage that would render the transmission
unserviceable gearbox shall be removed and an overhaul
evaluation performed. Make an entry in the component record
to show the reason for removal was compressor stall or surge.
Comply with step j.
i. Deleted.
j. If the transmission is sent for an overhaul evaluation,
the procedures outlined in step (1) through step (9) shall be
performed.
CONDITIONAL INSPECTIONS
5-41. AFTER COMPRESSOR STALL OR SURGE (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER