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post #1 of Old 07-02-2013 Thread Starter
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Raymarine SPX-5 Wheel Pilot rattles

I am installing an SPX-5 Wheel Pilot on my Marshall 22. The SPX has a plastic assembly that installs on the wheel and contains an internal ring that rolls on bearings held loosely in holders. When under diesel power, and not using the autopilot, there is quite a bit of vibration/rattle noise generated from the plastic assembly, mostly due to the fact that all tension is off on the internal components unless you are using the autopilot to steer. There are several warnings not to use grease or lubes on the internal parts, since the whole thing depends on a friction belt to move the wheel and grease under that belt would defeat the motor's grip on wheel. Anyone have any experience / fixes for this? Not the worst noise, but annoying. Part of the problem may be the small size of the boat, so the Yanmar 3GMD vibrations are not as well damped as on a larger vessel? The motor mounts, etc are all in good shape (near new) and my focus is solely on the autopilot parts, not the drivetrain.


Mike sullivan
1985 Marshall 22 catboat
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