MAINTENANCE MANUAL
SAVANNAH S
Doc. No.:
MM-SVNH-EN
Revision:
07
Rev. Date:
07/11/2022
Proj. Ref.:
SVNH S
A/C:
Savannah S
Applies to Generic Serial Number:
yy-mm-54-xxxx
Page:
20/132
DOC
FMM00
Figure 1: Safety wires example
Always replace the safety wire with a new one, when the bolt or nut has been opened.
1.14.2. Castle nut and cotter pin
There are two different method to install the cotter pin on the castle nut (
): the first one with
cotter pin oriented vertically and the other one horizontally in respect of the nut cutting. In both cases,
the cotter pin is considered properly installed if it is tight, not moving, the loop is not deformed and
constrained. The free edges of the pin must touch the bolt, constrain the pin itself and not touch the
surrounding structure. In case of vertical pin orientation, the loop is within the nut cutting, instead the
horizontal pin orientation must have the loop outside the castle nut cutting.
Figure 2: Cotter pin example
Always replace the cotter pin with a new one, when the bolt or nut has been opened.
The cotter pin size must be correctly coupled with the castle nut, as shown in the
