valve adjustments, good idea? by clock or by feel?

mardi 29 novembre 2016

So have a 6466T Deere 644E loader, rather going from top to bottom on the machine and well its a little persnickety to start up when its cold, 28 degrees, it'll crank for 3 seconds before one cyl starts to pick up, then picking up one more and one more. I'll pause cranking at 5 or 6 seconds, let it heat soak for a few seconds then crank again, usually about 10 seconds of cranking before it lights off with 4 or 5 and runs until 6 comes in.

when its running it purrs like a kitten, okay a really big happy kitten, huff of smoke if you give it the throttle like a typical engine coming on power. The machine has 25000 hours and the inspector that looked it over suspects its been rebuilt. I haven't seen a lot of threads of folks diving in to adjust valves, seems to be an easy enough job, pull the hood, air cleaner, muffler, air cleaner mount, breather and valve cover and you're in like flynn. JD like everyone else lists the timing spots and plugs and lines and which valves to adjust when.. Usually I'll do one cyl at a time, crank it over until its just around tdc and adjust that one, move back to the next, repeat.

Do folks do it by the hourmeter or just if its running rough? I know adjusting the kubota valves cured a lot of smoke and vibration at all settings.


valve adjustments, good idea? by clock or by feel?

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