BHT-212-MM-1
5-00-00
26 JUN 2013 Rev. 14 Page 183
Export Classification C, ECCN EAR99
3. Planetary component inspection:
BHT-212-CR&O a. Visually inspect all parts of planetary assembly for
evidence of wear and/or damage.
b. Visually inspect gear tooth contact patterns on 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 the eight pinion assemblies. Visually inspect
all lockwire provisions.
c. Visually inspect external and internal spline teeth of
204-040-117 adapter for excessive wear and general condition.
d. Check planetary support liners and 204-040-135
bearings for smoothness and freedom of rotation.
e. Visually inspect upper flange surface and upper pilot
diameter and lower flange surface and lower pilot diameter of
205-040-231 ring gear for fretting and wear. Visually inspect
upper and lower gear teeth contact patterns for evidence of
pitting, scoring, wear, or damage.
BHT-212-CR&O f. Visually inspect upper sun gear teeth for wear, damage,
and contact pattern.
BHT-212-CR&O g. Disassemble 204-040-784 lower planetary to remove
204-040-785 spider.
BHT-ALL-SPM (1) Magnetic particle inspect 204-040-785 spider.
(2) Visually inspect 204-040-785 spider spline for
evidence of wear (i.e., step, end loading, etc.).
BHT-212-CR&O (3) Visually inspect gear tooth contact patterns on four
pinion assemblies in lower planetary assembly. It is normal for
ring gear meshing side of planetary pinions to have a double
wear pattern. Check bearings for smoothness and freedom from
binding by rotating the four pinion assemblies. Visually inspect
all lockwire provisions.
BHT-212-CR&O h. Visually inspect 205-040-229 lower sun gear teeth for
wear, damage, and contact pattern.
5-47. EACH 3000 HOURS OF COMPONENT OPERATION (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER
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