BELL HELICOPTER 222, Maintenance Manual

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BHT-222/222B-MM-1
5-00-00
9 SEP 2011 Rev. 7 Page 73 ECCN EAR99
b. For helicopters after TB 222-98-156, torque the nut in
the tightening direction while restraining the bolt head. If
130 inch-pounds (14.5 Nm) of torque is reached without nut
movement, increase torque to 160 inch-pounds (18 Nm) of
torque. If the nut moves below 130 inch-pounds (14.5 Nm),
proceed with 2-year Inspection.
NOTE
Examine inspection window(s) and/or glass(es) for
cracking and discoloration. If either of these
conditions are present, the part must be removed
and replaced prior to returning helicopter for service.
Chapter 12
Chapter 66 12. Remove tail rotor gearbox fairing and inspect tail rotor
gearbox for oil leakage, mechanical or corrosion damage, and
security of mounting. Check for proper oil level. T1/T2
Chapter 66 13. Remove tail rotor gearbox chip detector. Inspect and clean
detector and test electrical circuit. Install chip detector. R2
14. Inspect tail rotor gearbox retaining nuts for proper torque.
15. Inspect tail rotor pitch control assembly as follows:
a. Check for excessive radial play between the pitch
control assembly and the tail rotor gearbox output shaft due to a
worn or debonded guide bearing. Radial play in excess of 0.018
inch (0.5080 mm) is considered excessive.
b. Check for worn areas on the tail rotor gearbox output
shaft wear sleeve.
c. Check for worn or rough crosshead bearing set.
d. Check for rough or worn counterweight bellcrank
bearings.
e. Check for worn inner race in the tail rotor idler
assembly.
f. Check for unbonded bearing in the upper leg of tail rotor
input lever assembly.
SCHEDULED INSPECTIONS
5-25. PROGRESSIVE INSPECTION — EVENT 10 (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER