Saturday, 20 November 2010

Oil Leak

The right hand cylinder base has been pouring out oil during the recent hot running. I thought it was the oil pressure switch but I tracked it back to the cylinder base. The join does not have a gasket. It a machined face to face fit with rubber "O" ring. Whatever the oil tight mechanism it was not working. I dismantled the cylinder from the engine block and cleaned up all the oil. When it was all clean and oil free I squeezed on a liquid gasket and re-assembled the cylinder. As expect the oil rings where fiddly but I preserved and got them engaged. After that it was just a question of doing up all the nuts and bolts, refitting the carbs for the umpteenth time. However the tappets needed adjusting. I read the manual for the clearance but could I find it? I had to come in from the garage, get cleaned up and go on the Internet for the measurement. Having found the settings I went back to the garage and set the tappets clearances. When the engine is new the clearances should 0.05mm greater than for a run in engine. Since I had the right cylinder of it was easy to set the tappets. Having finished that side I went round to the other side, took of the rocker cover and reset the tappets which I considered too tight. I put the rocker cover back on and tidied up.

I drained the petrol off the old tank into the new tank and fitted the new tank to the bike for the first time. It fitted as you would expect. I still need a rubber for the front tank mount.

Whilst turning the engine over by hand spotted the back wheel was going round. I jacked the back wheel off the ground a jostled the gearbox into neutral. The tested the clutch and it disengaged. I had been concerned that the clutch was not disengaging. It is, that is good.

I had a look at the new "Ebay" wheels. I am not that impressed. The spokes need a good cleaning and a drive spline on the rear wheel is very worn. I should be able to fit the twin discs but the front wheel but they need to go as a pair. It is quite nice that the disc on the new wheel is a cast iron item. Cast iron discs work better than stainless steel discs as brakes but rust quicker and since the bike will probably sit around, stainless discs are probably the right choice.

It fitted the new seat and it fits properly. I took it off again again and stored it.