Textron Bell 412, Руководство по обслуживанию

Страница: 52 / 288

BHT-412-MM-2
5-00-00
Page 20
Rev. 16 26 FEB 2013 Export Classification C, ECCN EAR99
6. Hanger assemblies — bearings and surrounding areas for
evidence of grease leakage, condition, damage, security,
corrosion, and overheating. Discoloration of bearing (blue or
blue/black in color) or multi-color appearance of hanger that
darkens adjacent to bearing is evidence of overheating. Brown
color of bearing shield is normal and is not evidence of
overheating.
7. Driveshaft sections for cracks, rivet failure, distortion,
dents, corrosion, and damage to anodized finish.
8. Disc pack couplings for separation, deflection, distortion,
cracks, or missing sections, and correct installation of bolts and
washers.
WARNING
CAUSE OF ANY DISCOLORATION SHALL BE
DETERMINED AND CORRECTED PRIOR TO
NEXT FLIGHT.
9. Coupling assembly at first hanger and adjacent to
transmission and surrounding area for grease leakage,
damage, corrosion, and evidence of overheat as indicated by
TEMP-PLATES or coupling discoloration. A change in color of
one or more of the red bordered TEMP-PLATE dots from
white/off-white to black indicates an overheat condition and may
require replacement of both outer and inner couplings (step 10).
10. Overheat TEMP-PLATES for condition and security.
TEMP-PLATES must not show evidence of over temperature
indication, deterioration, debonding, or excessive discoloration
of the epoxy overcoating.
SCHEDULED INSPECTIONS
5-5. DAILY INSPECTION — PART A (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER