RDG603A13
– Issue 19
Page 30 of 97
Connections on Engine
Connections on Header Tank
Shire 15/20
Canal and Work
Boat
Figure 21: Canal Boat / Work Boat Header Tank Connections
7. Shaft Connection and Propeller Selection
Some type of flexible coupling must be used to connect the gearbox output flange to
the propeller shaft flange.
Please note, underperforming engines will not be covered under warranty if the cause
of the poor performance is found to be the use of an inappropriate propeller.
8. Engine Anti-Vibration Mounts
Ensure that the engine feet do not end up at the top of the thread on the engine
mounts, this puts undue pressure on them and can result in excessive engine
movement and premature mount failure. If this is a problem put steel packing plates
under the mounts.
Ensure that the engine has been installed for at least 24 hours before shaft alignment
is checked, to allow the mounts time to settle under the engine weight.
Ensure that the anti-vibration mount centre screw is sufficiently raised so as not to
touch the engine bed. If this occurs, excessive engine vibration will be experienced
through the hull.
Alternative mounting holes for the anti-vibration mounts are available. Your new
engine maybe replacing an old engine so suitable holes may align with your existing
mounting holes
For the best results, the mounting screw for the front mount should go into the most
forward hole in the bracket. The mounting screw for the rear mount should go into the
most rearward hole in the bracket.
