Recommended Type Of Lubricant - Magni Gyro M16C Ordinary Maintenance Manual

M16 (C) TANDEM TRAINER
MAINTENANCE MANUAL
3.1.5 RECOMMENDED TYPE OF LUBRICANT
(See Fig. 3.1/3)
Flexible shaft pn 118 ‐ BLACK LITHIUM BASED GRAPHITE GREASE
3.2 ADJUSTING OF PRE‐ROTATION UNIT
(See Fig. 3.2/1 ‐ 3.2/5)
To keep the efficiency of the pre‐rotation and get safe and satisfactory take‐off performances with predefined
timing, it is strongly recommended to check and/or adjust the pre‐rotation unit pn 117 according to the indications
given below.
The reduction of performances is mainly due to the settling of the V‐belts pn A28 caused by their wear and the
progressive wear of the pulley pn 124. With time, belts tend to stretch, get longer and loose adherence on the
pulleys pn 124, thus reducing the efficiency of the power transmission to the rotor. This is something that does not
happen suddenly, but appears after many hours of use and does not endanger the gyroplane's efficiency, except at
long‐term.
Depending on the conditions of the V‐belts, and on available tools and equipment, it is possible to correct this
problem in various ways. When the operator feels a reduction of performances of the pre‐rotator, he can act on
the adjuster pn 127 of the pre‐rotation cable sheath pn 104 (1,5 x 3.900).
Unscrewing the adjuster pn 127 allows the belt tightening lever pn 415 of the pre‐rotator pn 117 to further stretch
the belts pn 428, thus recovering part of their play and re‐gaining the lost performance.
WARNING:
This is a temporary solution, the kind of action to be done at the airfield when other types of operation
are not possible or when the problem is still small.
ISSUE
A_November 2012
.
PAGE
37