Marine Installation Manual 2021-08 6-11
6 Engine Dynamics
6.3 Longitudinal vibration (pitching)
X72DF
Friction type stays
Friction type stays can be installed according to WinGD design, on either the en-
gine’s free end or driving end side. The layout of WinGD friction type stays,
which is linked to the ‘Engine stays’ drawing for the application of longitudinal
stays, must conform with the specifications. Deviations are not acceptable, espe-
cially the friction coefficient of the shim and the disc spring properties, which
must follow exact specifications.
For the assembly of friction type stays, please see the latest version of the
WinGD Assembly Instructions for WinGD friction type stays (DG 9715),
which is provided on the WinGD webpage under the following link:
Assembly instruction - Friction type stays
The layout of friction type stays are as shown in the drawing ‘Engine stays’ in the
MIDS (DG 9715).
Hydraulic type stays
Hydraulic type stays can be installed on either the engine’s free end or driving
end side according to third-party suppliers.
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