These last couple of weeks hasn't seen much progress on the RD. Between working on my house, lending a hand at the Dowerin Machinery Field Days and working on the park bikes I haven't had much time for anything else.

These pictures are of a rear axle housing for a Yamaha YFM80 quad. It's had a slight leak for a while which filled the brakes with gear oil until they stopped working. Then it dumped the rest on the shop floor overnight. Lovely. Time to find out what's happened inside.

After a bit of head scratching I managed to get the rear axle out from the swingarm. With a bit more effort the finaldrive housing came away from the axle housing revealing the cause of the oil leak. It seems that when it was assembled in the factory the seal caught on the shoulder of the axle letting the oil leak from the final drive into the axle housing. The seal at the brake drum was only designed to keep dirt out not to keep oil in, and eventually gave up dumping all the oil on the floor. Seemed a simple fix. I took both seals into Northam Bearings hoping they would have them in stock but things are never that easy. The outer seal is common and in stock but the inner wasn't one they sold a lot of so a bit more waiting for the postman. So hopefully it will be back on the track soon. Then I can fix the wheel on the other quad, but that's another job for another day.