by Mr Meme.
like new
After 5 years the wind generator, despite having been greased regularly started rumbling. The AEROGEN 6 is a quiet source of alternative energy. It is simple and efficient but…
On examination the lower turret bearing was found to be shot. With the brush cover off one can see what is going on inside the housing. Condensation had caused oxidation of the aluminium and the fine abrasive powdered aluminium had washed in past the bearing seal causing premature wear.
The turret or slewing wear on the bearings can be felt by simply tilting the unit by lifting the tail up and down. Also it gives off a knock when the wind is flukey.
The main bearings cause an audible vibration which is amplified by the hull becoming a rumbling noise.
Day one we took it down, and started stripping. Stripping is the word because some of the self tapping screws on end covers were seized and simply sheared off.
Tools needed are a large and small hammer, metric ring set spanners, a brass punch, steel punch, screw drivers and a bearing puller, small drills and drilling machine and a soldering iron.
Materials needed are emery paper, fine waterpaper, small self tapping stainless steel screws,one inch
Oxidized aluminium casing inside windy.
rubber jointing (neoprene), white smooth Hammerite, good quality water-resistant grease and silicone grease. No SEAGULL Shite (ie. SIKAFLEX) of course. A set of new bearings and circlips. And an AVO meter.
The inside of the casing was emery papered an rubbed with silicone grease and the outside casing was dressed up by removing all flakey paint and feathering with fine water paper and all was painted three coats.
shot bearings
By day three the bearings were fitted and assembly completed through to day four. All re-greased and tested and the output was according to the manual. (Which is available on-line).
We once again have a quiet windy pumping free liquorice when the sun don’t shine and the wind does blow..
HOWEVER!
Should you not feel like doing it yourself, chuck it in a box and send it to me and I will assess it and after a reasonable approved quote, I will send it back renewed with invoices of spares and materials used, photographs and a full report of the job done and its performance, including a 12 month warranty.
memesailing 
Hi
We have an Aerogen6 and need to replace the bearings. Could you tell us which one to get ?
Thanks in advance
Manu
HI Manu, sorry it took a bit of time, busy working on the boat and had stuff in storage.
The bearings your require are NSK 6204DDUCM x 2 they are the two main bearings, the top pivot bearing is NSK 6262DDU and the bottom pivot bearing is NSK 6004DDU. If you need any more help please feel free to ask. Kind regards Meme and Mike
Hi there- are you still able to service/ repair these? Got a seized one myself. Have all the new bearings etc but no time or facilities!
Sorry, got my plate full at the moment