Kubota Glow Plug question

[Happyman]

The glow plugs automaticly come on every time you turn the key to the run position (before you turn to the start position). Don't you have an indicator on your dash that shows you they are on, and then goes out indicating you can now start the engine? My glow plugs will stay on for about 5 seconds when it's in the 30's F and longer when in the 20's F.
Even when the tractor has been run and is warm the glow plug indicator comes on for a split second before I turn the key to "start". Glow plugs, at least on my L3940, are not something I can turn on or off, or have a choice as to whether they come on or not. It's automatic. And the colder it is outside the longer they will "glow" to preheat the cylinders.

 

[iplumb]

The glow plugs automaticly come on every time you turn the key to the run position (before you turn to the start position). Don't you have an indicator on your dash that shows you they are on, and then goes out indicating you can now start the engine? My glow plugs will stay on for about 5 seconds when it's in the 30's F and longer when in the 20's F.
Even when the tractor has been run and is warm the glow plug indicator comes on for a split second before I turn the key to "start". Glow plugs, at least on my L3940, are not something I can turn on or off, or have a choice as to whether they come on or not. It's automatic. And the colder it is outside the longer they will "glow" to preheat the cylinders.

On the newer B series you have to turn the key half way forward for them to come on.

 

[Piperflyer]

And there is no indicator on the B model

 

[iplumb]

And there is no indicator on the B model

I have an idicator on my dash when they are on.

 

[cycle_gator]

A simple test for the glow plugs is to use a continuity tester. Attach the clip end to the positive terminal on the battery and the probe end to the wire attachment point of the glow plug. If the test light comes on, the glow plug is good. I had a Ford 7.3 liter V-8 diesel that ate glow plugs constantly. Even in summer if 2 glow plugs were bad it would barely start. If 3 were bad chances were good you would kill the battery before it would start. Most of that was due to the way the controller worked. Nevertheless I became an expert in testing and replacing glowplugs. I always carried two spares with me.

So far, my L4310 has been fine at 860 hours. It does have an indicator light at the "run" position. Usually when it is really cold, like in the 20's, I will cycle the plugs twice before I hit the starter.

Hope this helps.

 

[bob19]

I have a B2910 and a Kubota GR2100. The glow lights on both dashes come on when I turn the key, however NEITHER one goes off. Both were bought brand new. The Kubota B2910 is about 5 years old and the GR2100 is 3 years old.

I usually keep the dash light on for 12 seconds and then start the engines. In colder weather, I will keep the glow light on for 25-30 seconds.

Am I keeping the glow lights on for too long?

The dealer did not seem concerned when I told them the glow light on the dash never went off.

Thanks,
Bob