Bell 206L4 Maintenance Manual page 160

BHT-206L4-MM-1
5-42. 3000 HOURS OF COMPONENT OPERATION (CONT)
DATA REFERENCE
5-00-00
Page 124 Rev. 13 25 FEB 2011
SCHEDULED INSPECTIONS
INSPECTION TASK DESCRIPTION
4. Visually inspect accessible areas of input pinion duplex
bearing, input pinion roller alignment bearing, and output shaft
roller alignment bearing and race for roughness, spalling,
scoring, pitting, flaking, broken or damaged retainers, and for
evidence of overheating and corrosion.
5. Visually inspect studs and dowel pins in case assembly for
security and damage. Replace damaged studs and/or dowel
pins.
6. lnspect accessible areas of case and output cap for
corrosion and damage.
7. Inspect sight glass for cracking, crazing, or any condition
that may obscure level or color of oil. Inspect oil level indicator
for discoloration, peeling paint, or evidence of a plastic film on
painted side. Remove plastic film if present.
8. Reassemble gearbox. Exercise caution when inserting
input pinion assembly, if previously removed, to ensure proper
gear mesh with spiral bevel gear.
9. Check gearbox backlash. Measured values shall be within
0.001 inch (0.03 mm) of those obtained in step 1.
If input pinion and spiral bevel gear were replaced at
this time, backlash figures may not fall within
0.001 inch (0.03 mm) of those obtained in step 1.
Backlash shall, however, fall within overhaul limits.
10. Apply sealant and touch up finish as required.
NOTE
INITIAL
MECH OTHER
ECCN EAR99