my m9000 wants to stall on cold startups when it gets down around 0 degrees. I switched to fully synthetic engine oil and this helped but it still shuts off sometimes. Replaced the timer relay but made no difference.My question: why does the timer only allow 5 seconds to build oil pressure before shutting the engine off, my big International takes 10 seconds or more to build pressure on cold mornings?
m9000 timer relay
- Thread starter david b johnson
- Start date
Mine did the same thing when it was new (2004). It would shut off before it built oil pressure. I switched to 5-40 Rotella, made no difference so I had my dealer make a farm call and here is what he found.......
On the front of the engine, right behind the lower pulley is a cap (on the left side facing forward). Under that cap there is a spool valve the controls oil pressure. The bore on my spool valve had a tiny burr in it and the spool was hanging on the burr just enough that the spool wouldn't shuttle consistently. In my case because the tractor was new, it went back to my dealer and under warranty, they replaced the entire front timing case.
I think they could have taken a piece of crocus cloth and smoothed the burr and that would have eliminated the issue but because it was new, Kubota had them replace it.
Haven't had a lick of trouble since then.
My suggestion is pull the plug and inspect the spool and bore and if there is a burr, use some crocus cloth on it to smooth it out. That shuttle spool has to move freely or the engine won't build pressure fast enough (under 5 seconds) and it shuts the engine down.
There is a coil spring in there, make sure you put the spring back in the way it comes out. That spring controls the oil pressure.
Don't need to drain the oil, a tiny bit will come out, that is all.
The service tech took mine apart in the farm yard but when he found the burr, the tractor went back for the case replacement. He agreed that it could have been smoothed out but being new, it was gonna be a Kubota deal..
Not hard to get to. If you lay under the tractor and look up, it's right in front of the oil pan between the pan and the pulley.
It gets cold here as well and I use the tractor for snow removal si I stick with the 5-40 because it cranks easier. No electricity in the barn to plug a block heater in to.
Hope that helps.
On the front of the engine, right behind the lower pulley is a cap (on the left side facing forward). Under that cap there is a spool valve the controls oil pressure. The bore on my spool valve had a tiny burr in it and the spool was hanging on the burr just enough that the spool wouldn't shuttle consistently. In my case because the tractor was new, it went back to my dealer and under warranty, they replaced the entire front timing case.
I think they could have taken a piece of crocus cloth and smoothed the burr and that would have eliminated the issue but because it was new, Kubota had them replace it.
Haven't had a lick of trouble since then.
My suggestion is pull the plug and inspect the spool and bore and if there is a burr, use some crocus cloth on it to smooth it out. That shuttle spool has to move freely or the engine won't build pressure fast enough (under 5 seconds) and it shuts the engine down.
There is a coil spring in there, make sure you put the spring back in the way it comes out. That spring controls the oil pressure.
Don't need to drain the oil, a tiny bit will come out, that is all.
The service tech took mine apart in the farm yard but when he found the burr, the tractor went back for the case replacement. He agreed that it could have been smoothed out but being new, it was gonna be a Kubota deal..
Not hard to get to. If you lay under the tractor and look up, it's right in front of the oil pan between the pan and the pulley.
It gets cold here as well and I use the tractor for snow removal si I stick with the 5-40 because it cranks easier. No electricity in the barn to plug a block heater in to.
Hope that helps.
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I had inspected the relief valve and it appeared nice and smooth and the spring looked alright also removed the timing cover thinking the screws on the oil pump cover had backed out but no they were tight{lock tited them just to be on the safe side] hooked up an oil pressure gauge to better see what was going on. when its below 0 degrees out the tractor pumps no oil pressure for five seconds and the timer relay shuts the engine off.when restarting the engine their is always instant oil pressure as if that first start had primed the pump. whats happening here?
I'd say you have a drain back issue then. You using a Genuine Kubota oil filter? I always do myself, just a thought there. If the filter drains back, you'll have a 'gap' in the supply and no oil pressure for a few seconds.
Looking at the WSM, that is the only check valve in the lubrication system, the oil filter anti drainback valve.
Only thing I can think of. My issue was cured with the shuttle valve replacement.
I keep my oil level right in full all the time as well
Looking at the WSM, that is the only check valve in the lubrication system, the oil filter anti drainback valve.
Only thing I can think of. My issue was cured with the shuttle valve replacement.
I keep my oil level right in full all the time as well