Kubota L2550

[Kubota A]

I own an L2550 with 1200 hours on it. While using it today, the engine developed a loud knock. Oil level was up, but the fuel may have been a little thick due to temp/consistency. The engine didn't seem to have normal power. Changed oil but found no particles in oil. Is a compression test next? Any help would be greatly appreciated!

 

[Wisconsin Cowman]

I would take the oil pan off and check out the bearings.

 

[Kubota A]

I need a little help with the process. My Kubota is a 4wd and I believe that there is the front power shaft running between the two lobes of the oil pan to the front axle. There appears to be only about 3/4s of an inch play. Does the drive shaft need to be removed to drop the pan and if so, could you explain the process to pull the d/s? Thanks.

 

[mowr]

A dripping injector can cause an engine to knock badly. I would suggest using something to approximate a stethoscope and listen at each injector nut. It should save a good deal of time and money if that turns out to be the problem.

 

[jm.old]

Don,t get excited yet. No need to pull the oil pan just yet. As the man said we need to see just where this noise is comming from. Give me an e-mail and I can talk you thru several things before removing the oil pan. Jerry

 

[Kubota A]

Just an update: I removed the fuel filter and found junk on the inside of the filter, it must have gotten past the o-ring, drained all the fuel, replaced the o-ring and filter and started it up. It still smokes and knocks. I loosened each of the injector lines. At each loosening, the engine noticeably dropped in rpm and picked back up when tightened. Stuck a board to my ear and each injector, noticeable difference in injector nearest clutch. Will try swapping injectors tomorrow to see if sound follows injector or possibly originates from pump. Anything I need to know about removing injectors?

 

[Kubota A]

O.K. So what is the trick to get those stinking injectors out?!