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Thread: howard rotavator bearing

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    howard rotavator bearing

    my old selectatilth rotavator has started leaking oil from top bearing inside the chain case, retaining studs have also come loose, im thinking the bearing is knackered has anyone ever changed one of these just wondering whats involved in doing it

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    Re: howard rotavator bearing

    Quote Originally Posted by aleary View Post
    my old selectatilth rotavator has started leaking oil from top bearing inside the chain case, retaining studs have also come loose, im thinking the bearing is knackered has anyone ever changed one of these just wondering whats involved in doing it

    If you haven't a parts book you can download them here- http://www.kongskilde.com/nlbe/en/Ag...inued/Soil/PTO Harrows/Older Rotavators/Howard Rotavators

    I'm pretty sure this page below is for a selectatilth model-








    Slacken chain adjuster 169 and remove the bottom skid, take the bolts out around the endcover & off with that dropping whats left of the oil into a tray. Chain off and then splitpin & castlated nut 174 off, pull the sprocket off and then you will be able to see into the bearing, if it has gone you might be able to remove the balls and cage so you could try welding around inside the outer race to make it contract when its cools and come out easily. If you can get the inner race off the shaft then it isn't too difficult to undo tube 202 and remove it along with the shaft and bevel gear, then you will be able to deal with the bearing race. The gasket that is leaking will be #200 the one between the tube and endplate 213 which is bolted.

    If the bottom bearing is shot then you may have to unbolt the stubshaft 183 off the rotor and separate everything. The housing for the lower bearing is riveted and these used to be loose/leak too.

    Its nothing too difficult, just good old fashioned imperial engineering!

    Not sure where spares are available these days although bearings & seals are easy plus its possible to find good quality cork gasket sheeting to make your own gaskets if you have to - http://gb.sparex.com/cork-gasket-2-0mm-12805.html
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