Textron Bell 212, Maintenance Manual

Page: 67 / 269

BHT-212-MM-1
5-00-00
Page 44
Rev. 14 26 JUN 2013 Export Classification C, ECCN EAR99
Chapter 67 COLLECTIVE AND CYCLIC FLIGHT CONTROL
ACTUATORS
— Detailed Visual Inspection
1. Universal bearings for looseness.
2. Input lever bearings and bolts for wear and looseness.
3. Fasteners attaching cylinder lower supports to structure for
looseness.
4. Cylinder lower bearings for looseness.
5. Actuator assemblies for condition, leakage, and security.
6. Cylinder extension tubes for condition and security.
7. Upper cylinder housing mounting bracket for condition and
security. Check mounting bracket cavity for corrosion. Cavity
drain hole for obstruction. Dust boot for condition. Reapply
corrosion preventive compound (C-104) as required.
8. Actuator linkage for wear and security.
9. Clean exposed area of actuator piston with hydraulic fluid
(C-002) or hydraulic fluid (C-072) and a clean lint-free cloth.
10. Check cyclic and collective hydraulic cylinders piston rods
for evidence of excessive wear and scoring. Wear of the piston
rods indicates cylinder assembly is incorrectly aligned to lower
supports and requires adjustment.
Chapter 67 — Restoration
Every third 100 hour inspection (300 hours) or 12 months:
1. Torque check nuts attaching actuator cylinder to upper
supports.
2. Remove bolts attaching actuator to lower supports. Check
cylinder alignment to lower support. Rod end bearing side loads
are not permitted. Reinstall bolts.
SCHEDULED INSPECTIONS
5-9. 100 HOURS/12 CALENDAR MONTHS — PART A (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER