Auto Prop Rebuild
(I took the liberty of changing the subject line)
Also, they have a great series of on-line videos that show how to do this:
Although, I haven’t found the one yet that shows how to put it all back together.
With best regards,
Sailing Vessel - Cream Puff - SM2K - #275
Currently cruising - Grenada
From: amelyachtowners@... [mailto:amelyachtowners@...]
Sent: Sunday, August 27, 2017 4:04 PM
Subject: RE: [Amel Yacht Owners] Rpm
Replacing the bearings on the Autoprop is easy but time consuming.
However you are a short drive from AB marine in Newport. They are the Autoprop dealers and are very helpful. I am sure they could rebuild your prop in a few days. Otherwise they can sell you the parts and rent you the tools.
Kimberlite Amel Super Maramu #376
When you service the propeller, exactly what is done? Is it new bearings? Can one fix that one self or do I need to send it away? We have clean bottom and newly Velox on the propeller, and Greased the propeller but it only reach 2600 rev on our TMD 22. Before we reached 2800, I thought it might be the turbo being slow and need cleaning again, or the injectors. We hade the turbo serviced 1000 h ago, do not know how often one should service it, we try to now and then runthe engine hard for 20 to 30 minutes to clean out some carbon dust.
Paul on SY Kerpa SM#259 currently in Bristol RI
Here are the instructions for the autoprop. Takes a bot 3 hours due to the difficulty inremoving the split bearing from the blade.
SM 376 Kimberlite
H6 Roller Bearing General Instructions
Your Autoprop is supplied assembled, tested, balanced and ready to fit to your yacht.
Observing the following instructions will ensure a correct installation and trouble free service for a long time. Do not grease your propeller during installation.
Before fitting your new Autoprop ensure that the cutlass bearing is not worn. A worn cutlass bearing will not be suitable for any propeller. If it is worn replace it with a good quality bearing assembly with a brass shell.
Removal of your Autoprop:
Autoprop makes and sells an Autoprop specific propeller puller. However most three legged prop pullers will work with the Autoprop.
Haulout Inspection and Cleaning:
Greasing your Autoprop:
To re-grease your Autoprop it is not necessary remove the propeller or to remove the blades
Always use a good quality waterproof lithium grease. In USA we recommend
CRC # SL3110 .. generally found at an auto parts store like NAPA.
Your new Autoprop is fitted with greasing channels and screws in each blade. It is not necessary to remove blades to re-grease the propeller. It cannot be done under water, but should be done during a routine haul out and bottom cleaning.
It is recommended to re-grease every year if possible but at least every two years.
The Autoprop needs good protection from electrolytic and chemical corrosion. Ensure that you replace the zinc anode (#12) each year. For extra protection it is advisable to fit a shaft zinc or shaft bushes, as the Autoprop zinc will only protect the propeller.
Eventually the Autoprop bearings will need replacing. This is a straight forward procedure and is covered in the kit when ever a bearing replacement is requested.
To order a bearing kit simply contact your Autoprop dealer and have the serial number (#serial number) at hand.
Kimberlite was not coming up to speed. even though I dove on the prop to make sure it was clean and the blades moved smoothly without any wiggle I decided to rebuild the prop. The increase in RPM was dramatic after the rebuild..
The prop is a finely tuned device with very tight tolerances and a slight amount of wear will be obvious in the loss of rpm even though everything seems fine no wiggle and play in the blades.
The instructions to re install the bearings etc come with the prop rebuild kit.
It is a lot easier to re assemble that dis assemble. A torque wrench comes in handy if you want to get the install perfect. It is quite easy. The only thing that needs attention is the bending down of the retaining tabs.
I don't know how to add a drawing to this note. The drawing is quite detailed. Just make sure to grease all the bearings before installing. The people in Newport were very helpful.