Magni Gyro M16C, Ordinary Maintenance Manual

Page: 18 / 122

M16 (C) TANDEM TRAINER
MAINTENANCE MANUAL
PAGE ISSUE
18
A_November 2012
1.7 GENERAL FASTENING REQUIREMENTS
Use only indicated products and strictly follow the requested methods:
1.7.1 MANUFACTURER'S REQUIREMENTS
1. Metric Series, 8.8 type ‐ fastening of fittings and components.
2. PAN Series ‐ fastening of torsion rods and blade flapping axis bolt.
3. AN Series ‐ fastening of control rods and rotor head assembly.
4. NAS Series ‐ fastening of rotor head joints.
Each fastening element must have specific anti ‐ corrosion and resistance to oxidation characteristics.
1.7.2 FASTENING AND METHODS REQUIRED FOR ALL THREADED
CONNECTIONS
1. Fiberlock nuts:
•
Never use them more than once;
•
Do not use them if the tightening is not locked;
•
After tightening there must be at least 1 ‐ 1,5 thread clear of the nut.
2. Lock washers (spring lock washers):
•
Always place between nut and plain washer, never directly on surfaces.
3. Threadlocker (Loctite):
•
Light locking ‐ purple Loctite 222;
•
Medium locking ‐ blue Loctite 243;
•
Strong locking ‐ Loctite 272.
4. Castle nuts:
•
Always use together with safety pins or cotter pins.
5. Plain washers:
•
Use on all painted surfaces.
6. Large plain washers:
•
When possible use on all aluminium surfaces;
•
Always use on surfaces of fibreglass reinforced plastic.
7. Tightening method:
•
Tighten all the nuts by turning the nut, but never turn the bolt.