How to Break In Reman Engine

[Axl2011]

Hello, I have a Kubota B20 & I just bought and currently installing a Reman Kubota D950-AT from a Kubota Dealer. They only gave "recommendations". What is the correct Break In Process to follow so I make sure I do this correctly.

Thank You! Have A Great Day!

 

[oosik]

Follow the recommended procedures. Who better than the company that did the remanufacturing would know...... If you need more - call this company.

 

[Ortimber]

For the most part, just use it and change the oil at a slightly faster interval than what would be normal for that engine.

Breaking in an engine is almost a thing of the past.

 

[Axl2011]

This is all they said. Is it really this easy?? I have read you have to idle so long then rev to certain ram for so long or something. Also I wanted to use only Kubota oil and coolant so I know its good instead of other brands. And also my manual says 10w30.




15w40 diesel oil from the start (we recommend a 15W40 Shell Rotella, but any 15W40 diesel oil will do);
*
*1. Do not use synthetic oil in the engine before 2000 hours. Use of synthetic oil will prevent the rings from seating properly, which in turn will cause the engine to smoke for the life of the engine.
2. Do not run the engine over ¾ throttle for the first 50 hours. Again, this will prevent the rings from properly seating.
3. Perform an oil change after the first 50 hours.
4. Perform an oil change again at 100 hours.
5. After 100 hours, proceed with the maintenance schedule provided in the machines operators manual.
*6. Use a 50/50 green mix coolant.

 

[RustyA]

2000 hours before full synthetic oil seems extreme to me. 50 and 100 on non syn and 3rd time I would go synthetic unless it voids reman warranty. If rings aren't seated in 100 hours they never will. Agree with 75% throttle for first 50 hours.

 

[oosik]

I thought it might be a slip of the finger and was really 200 hours. If it's really 2K hours - might just as well stick with Dino-oil.

 

[George the Beagle]

I think even 200 hours is extreme for a break-in period. More like 20 in my opinion

 

[Axl2011]

Now during the break in. Could I use the Backhoe and front loader? Or does that put pressure on the motor also?

 

[pmsmechanic]

In school we were told to warm the engine up slowly and cool it off slowly during break in. Also vary the engine speed so not all of the break in hours are at the same engine speed. I've heard of guys doing the engine break in every which way and they seem to get away with it. Me I would like to see a good, steady moderate load on the engine during break in.

The important think is to get the rings to seat. Otherwise you will be burning excess oil. Rings seat better under heavier loads rather than light loads so you decide how you want to do it. I think front end loader work would be ok as it's easy to vary the load and the rpm. Backhoe work is basically an overpowered motor running a hydraulic pump at a steady rpm. For a sort period of time I think it would be ok but I certainly wouldn't be pleased about an all day backhoe job as a break in for my new motor.

Now there always seems to be some on this forum that know way more than I do so I'm sure some will disagree with me. I'm telling you what I think.

 

[orezok]

Hmmm. What is the break in period for a diesel generator. About 5 seconds until it is a full rpm and power. Never have seen a diesel generator motor smoking. I am also sure that earthmoving contractors tell their employees to run the D9 at half speed for the first 100 hours.