They say time flies when your'e having fun?
I was hoping to get a bit more done this weekend, but judging by the way my back felt when I got up this morning, I DID get enough done
The remaining modification on the camshaft was to bush the collar so it would fit properly on the undersize shaft. I faced and bored out the collar to give the bush more meat.
Flanged bush fitted:
I didn't follow the example in the picture dieselgman send me exactly, but instead I copied the groove design of the cast iron bush.
The camshaft is now finished and it's a great relief... but there's always something else... I have three new taper pins I bought from stationaryengineparts. The one in the collar I can use if I must, so I'm 2 short. I was surprised to learn that no-one carries stock of taper pins any longer.
Not a biggie though - I need to order a couple of things later so I'll get the pins when I place the order. I thought of turning them but it's such a schlep to get the taper right that it's just not worth the time spend.
Time to get dirty again:
Diesel filter housing has two of cover's corners broken off.
I've done cast-iron welding before on my Fairbanks-Morse to repair all the frost cracks, but I think brazing might be an easier and more appropriate process for this job. Somewhere along the line I ran out of brazing rods, so out came the nickel rods to get the job done.
Pre-heat - weld - peen - keep warm - weld - peen - keep warm - repeat. After welding cool down slooowly - I usually put the parts inside a fibreglass blanket to slow down the cooling process as much as possible.
As with the rest of the engine, this was also filled with water for a loong time. Everything is brittle. I saw elsewhere on the forum that very nice paper element retrofits can be done on these. I'll shelve this for now.
After a couple of hours worth of grinding and sanding I ended up with these parts prepped for painting. (and I was very black). I'm "blueprinting" the casting finishes. All the ugly fettling and casting imperfections are meticulously ground away.
Not sure how I'll get my hands clean again, but the crank is out. (Came out very easily)
Next surprise:
The main bearings are gone and it looks like they were ready to seize. Good thing the camshaft seized instead and spared the crank from damage.