Back onto this again after being away with work once again.
First up was to sort out the bent speed selector shaft. I tried straightening it in the press, barely got anything on it and snapped the bugger! I decided the best way to go forward was to cut the shaft a bit further back at the o ring groove, drill the good part then make a new section, and press the two parts together.
Here is it pressed together, I thought I had photos of the bits before I put it together but can't find them on my phone. Seems to be a common thing with me?
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With the shaft now one piece I installed it in the the outer selector shaft, and fitted the gear that drives the speed indicator dial. The gear on the shaft there is keyed to the shaft, and the double gear to the right just spins on it's shaft.
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Next I had drill and tap 3 holes in one of the gears that @Pete. made for me. They were supposed to be No.4 UNF but I don't have that tap, so I went for M3. Here is the gear installed on the shaft, it's not keyed or anything, just spins free on the shaft.
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I had to make a new pointer dial to go onto that gear that I drilled the holes in, as the original was mashed up. Nothing to write home about really, it's just a 2mm thick piece of aluminium turned (on the bridgeport!) round, a 3/4" centre bore and 3 holes at correct PCD to match the gear. Once it was fitted I marked it with a sharpie where there should be arrows pointing to the speed on the outer dial. I took it off and stamped a the 3 marks in, then refitted to make sure I'd got it right.
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And here is the original which obsolete.
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It's not pressure feed as such, but oil is pumped from the tank to the steel bar that spans the width of the headstock casting as seen in my previous post. The oil is discharged from the spray bar either through drilled holes or through the copper pipes. In the case of the headstock bearings the channel around the perimeter of the casting is filled with oil via the copper pipe nearest us in the photo and via a drilled hole at the far end. Once that channel is filled up the oil runs down through the openings to the spindle bearings. Does that make sense? I've had a few beers tonight lol.Does the 350 have pressure feed head stock bearings?
(Always makes me cringe when I think how little oil gets drip fed to the 300s bearings)
It's not pressure feed as such, but oil is pumped from the tank to the steel bar that spans the width of the headstock casting as seen in my previous post. The oil is discharged from the spray bar either through drilled holes or through the copper pipes. In the case of the headstock bearings the channel around the perimeter of the casting is filled with oil via the copper pipe nearest us in the photo and via a drilled hole at the far end. Once that channel is filled up the oil runs down through the openings to the spindle bearings. Does that make sense? I've had a few beers tonight lol.
And that the oil is pumped up there rather than flung from the gears so should always have a running supply.OK, Same as a 300, other than the addition of the spray bar.
Why are there different gears on the TDI?I rebuilt the screw cutting dial and also gave it a coat of paint. Pretty simple, just a bronze bush for the spindle, and some cleaning.
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