I made an executive decision yesterday. Seeing as I didn't get home from work until gone 11pm the night before, I decided that Wednesday would be a day of rest. Well, comparatively. So after doing all the animal related jobs, collating and transferring my figures to my boss, moving some timber to a better place of storage and having lunch at 2.30pm, the rest of the day was my own. Out to the shed. Off with Cubbie's brake shoes, at last - they need re-lining so I'm told, and then on to the little job of removing Terry's timing pinion. Cub forum member Scott was good enough to send me a couple of suitable pullers along with the oversize piston I bought from him, and with the right tool the job was simple. Screw the puller into the pinion, wind the inner bolt in and, with a little twist to disengage it from the distributor gear, pull the timing coggy thingy off.
With that out of the way, the whole big end assembly was easily pulled out. The book states to clean it with a petrol / paraffin mix but as I didn't have any paraffin, I cleaned out an old oil container and used that as a basin, before swishing some petrol over it. Other than a few little bits of rust and stuff, it all seems ok. Dosed it up with a liberal amount of nice clean fresh oil and wrapped the big end do-dah up in a clean plakky bag and put it on the shelf for safe keeping. After that I used a rag soaked in petrol to scrub away at the old gasket goo on the edge of the case. Ok, I might have used a penknife too, but I was very careful.
The oil return pipe seems to have snapped the small clip that holds it in place, and tell me something, why does the pipe have a split pin through the end of it? To regulate the amount of oil, maybe? What should the next job? I intended to leave the gearbox alone as to my novice eye it all looks ok in there, although that seal at the back might need to be replaced. What about the left main bearing that isn't a bearing, it's a bush, should I replace that as a matter of course? The colouring looks a bit 'odd', kind of worn in patches. Is it easy to get it out? Actually, how does one remove said bush?
UPDATE - just checked the bush again, one of the edges is chipped and broken so I guess it's gotta be tackled.