BHT-412-MM-2
5-00-00
26 FEB 2013 Rev. 16 Page 179
Export Classification C, ECCN EAR99
9. Planetary component removal:
a. Remove upper planetary assembly 204-040-360 and
adapter 412-040-107 as an assembly.
b. Remove retaining ring M27426-1220C and adapter
412-040-107 from planetary assembly 204-040-360. Do not
disassemble planetary assembly.
c. Remove liner 204-040-337, bearing 204-040-135, and
extension 412-040-109 as an assembly. Do not disassemble.
d. Remove ring gear assembly 205-040-231.
e. Remove upper sun gear 412-040-230, deflector
204-040-378, and retaining ring RR687L as an assembly.
f. Remove lower planetary assembly 204-040-784. Do not
disassemble.
g. Remove liner 204-040-338, bearing 204-040-135, and
liner 204-040-257 as an assembly. Do not disassemble.
h. Remove lower sun gear 205-040-229.
BHT-412-CR&O 10. Planetary component inspection:
a. Visually inspect all parts of planetary assembly for
evidence of wear and/or damage.
b. Visually inspect gear tooth contact patterns on the eight
pinion assemblies in upper planetary assembly. It is normal for
ring gear meshing side of planet pinions to have a double wear
pattern. Check bearings for smoothness and freedom from
binding by rotating pinion assemblies. Visually inspect all
lockwire provisions.
c. Visually inspect external and internal spline teeth of
adapter 412-040-107 for excessive wear and general condition.
d. Check planetary support liners and bearings
204-040-135 for smoothness and freedom of rotation by
manually turning.
5-34. EACH 3000 HOURS OF TRANSMISSION (412-040-004) OPERATION (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER
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