Timing Window

[jonsstihl]

thanks for the tips. I will definitely try to turn it over by hand before fiddling with the glow plugs.

 

[Henro]

I'd try to turn it over before you remove the plugs to see how hard it is. Mine was easy to turn over but my engine is smaller. It's easy to get in trouble when you take a glow plug out, they tend to get rusted in place, and the wiring can be fragile. If you break one off you're looking at a major pain.

How do you turn the engine on your b2710 by hand. Using the fan? Like to know as my B2910 should have the valve clearance checked, but this is a question I was unsure about...

 

[BeezFun]

How do you turn the engine on your b2710 by hand. Using the fan? Like to know as my B2910 should have the valve clearance checked, but this is a question I was unsure about...

I turned the crankshaft nut, you need a 23mm socket for the crankshaft nut, I had to go out and buy that because I didn't have it, I think it's a bit unusual.

I made some videos when I adjusted my valves, take whatever is useful.
This video is the intro.
This is taking things apart.
This one and this one talk about the timing marks.
And this is the actual adjustment process.

I made a few mistakes talking on the video and never went back to do it over. The correct narration is: I watch for the intake valve to just open, that's the beginning of the intake stroke, then I watch for it to just close, that's when the piston is all the way down ending the intake stroke. I make a mark with tape on the fan belt at that point. Then I watch for the exhaust valve to just open, that's when the piston is all the way down again and the exhaust stroke is starting. TDC is halfway in between those two points and I use a piece of tape to mark the fanbelt so I can find the middle point.

 

[number two]

For anyone doing valve clearance adjustments,a set of stepped feeler gauges is very helpful!
Go-No-Go feeler gauges-look them up.

 

[bill18163]

I'm also wondering how likely it is to tear the valve cover gasket.

jonsstihl,
When I took the valve cover off of my L3940 the gasket stayed in place and didn't tear at all. But you never know what might happen. I also did the valve adjustment on my B2710 and that gasket was OK. Also I should mention that my L3940 glow plugs came out with no problem. But this was at 800 hours. An engine with more hours could potentially be a problem I guess.

 

[jonsstihl]

i'm at 800 hrs too so I'm not expecting a ton of problems I just need to find the time. I may end up waiting until winter. Too many projects right now outside while the weather is nice.

 

[Henro]

I turned the crankshaft nut, you need a 23mm socket for the crankshaft nut, I had to go out and buy that because I didn't have it, I think it's a bit unusual.

I made some videos when I adjusted my valves, take whatever is useful.
This video is the intro.
This is taking things apart.
This one and this one talk about the timing marks.
And this is the actual adjustment process.

I made a few mistakes talking on the video and never went back to do it over. The correct narration is: I watch for the intake valve to just open, that's the beginning of the intake stroke, then I watch for it to just close, that's when the piston is all the way down ending the intake stroke. I make a mark with tape on the fan belt at that point. Then I watch for the exhaust valve to just open, that's when the piston is all the way down again and the exhaust stroke is starting. TDC is halfway in between those two points and I use a piece of tape to mark the fanbelt so I can find the middle point.

Thank you for the links. VERY helpful to me personally, and should be appreciated by others in the future, if they find this thread!

 

[5030]

you are going to have to take the loader support off on the right side because the timing window is behind the FEL support.

Just had my dealer adjust the overhead on my M9 and they had to remove the right loader mount to access the window in addition to the muffler and various other stuff like the steering controller. I suggest obtaining a shop manual and you can download one in PDF version from www.kubotabooks.com for free.

 

[bill18163]

I finished the valve check on my L3940 today. All the valves were within tolerance. I didn't have to do any adjusting at all. The worst part of the job was getting everything out of the way so I could access the valves. I'm glad that this doesn't have to be done for another 800 hours.