Cat 725 E329 code

[Hunter013]

In total, I have cut open 3 filters. Oil was squeezed out of them all.

The first filter was a Baldwin which had minimal to no metal/ debris.

The second filter was a Cat Due to it being a metal caged cartridge filter, I used an oscillating multitool to cut apart one filter. There was a very miniscule amount of metal/ shavings picked up by the magnet, which I'm kind of suspect that some was deposited from using the oscillating cutter.

For the last filter, I used a box cutter for 99% of the cutting of the filter. That one I saw very little amount of debris (which I'm assuming there's usually always a tiny amount of debris in filters?). Not an amount of debris that I imagine would plugged the filter.

I drained the fluid as well. The plug had a bit of shavings on it, but nothing that I thought was a crazy amount.

I put in the 1R-0722 filter. Code still comes on.

 

[Hunter013]

I also did a successfull clutch calibration. I noticed when I was test driving, downshifting from 2nd to 1st gives a big clunk, but everything else works great.

 

[Nige]

Time to try an additional spacer behind the spring then.?

Have you got your oil analysis results back yet.?

 

[Nige]

That one I saw very little amount of debris (which I'm assuming there's usually always a tiny amount of debris in filters?).

There should be no debris in the filter at all, metallic or not. The debris you are finding, which I assume is non-metallic, is most likely coming from clutch friction material.

 

[Nige]

I also did a successfull clutch calibration. I noticed when I was test driving, downshifting from 2nd to 1st gives a big clunk, but everything else works great.

Is/was the clunky 2nd->1st downshift what you experienced before or after you made the successful calibration.? Or was the clunk exactly the same before and after.?

 

[Hunter013]

Time to try an additional spacer behind the spring then.?

I'll try that next.

Have you got your oil analysis results back yet.?

I called the lab and they said it should be done today or tomorrow.

Is/was the clunky 2nd->1st downshift what you experienced before or after you made the successful calibration.? Or was the clunk exactly the same before and after.?

It seemed exactly the same as before.

 

[Nige]

If you try another spacer do it with the 1R-0722 element. The original element being high efficiency might just want to try to turn itself inside out with the higher pressure.

 

[Hunter013]

Just to confirm, I should stack another spacer on the existing spacer?

 

[Nige]

Just to confirm, I should stack another spacer on the existing spacer?

Yes. The 2nd spacer will go between the end of the spring and the spool right alongside the original one.
And as I mentioned before it's only for a test - don't leave it in there.........

I called the lab and they said it should be done today or tomorrow.

Post the results as soon as you have them please.
Did you confirm that they will be doing a Particle Count and ISO 4406 Cleanliness Code number as part of the analysis.? The results will not be much use if they aren't.

 

[Hunter013]

And as I mentioned before it's only for a test - don't leave it in there.........

Understood

Did you confirm that they will be doing a Particle Count and ISO 4406 Cleanliness Code number as part of the analysis.?

I called the lab and they said they will be doing both.

 

[Hunter013]

Check the spring #4, it should have a free length of 35.5mm with an outside diameter of 17mm.

I had one of my other guys look at the spring and spacer previously. He never measured them, but I just did and the spring is 62.5mm free length with an OD of 15.3mm.

 

[Nige]

I had one of my other guys look at the spring and spacer previously. He never measured them, but I just did and the spring is 62.5mm free length with an OD of 15.3mm.

Sorry I was reading the wrong numbers before. Spring #3: -
Free length 62.5mm, diameter 15.2mm.
Test Force 24 pounds, compressed length 46.1mm.

The numbers I quoted previously are for the spring #2 that is wrapped around the head of the bypass spool.

 

[Hunter013]

If you try another spacer do it with the 1R-0722 element

I just tried the extra spacer and no difference.

 

[Nige]

Out of ideas now.
Need that oil analysis report.

 

[Hunter013]

Need that oil analysis report.

Report said everything is normal. Is there any other info from the report I should look for?

 

[Nige]

That graphic is really hard to interpret. Do you have the raw numbers for the most recent result, especially for the particle count.?

 

[Hunter013]

I've never used this system before. I don't know how to just get the most recent results separate.

 

[Nige]

Can you ask the lab for them.?
In order to determine the ISO Code needs the actual particle count in three specific values - 4 microns, 6 microns, & 14 microns. They have graphed the results so they must face the numbers that generated them.

 

[Hunter013]

They just sent me this. Hopefully you can make it out and it helps.

 

[Nige]

ISO 18/17/13. That level of cleanliness is almost up to the standards of new fill oil. The result of using the 139-1536 High Efficiency filter I would imagine.

All the wear elements are also low, so no issues there either.

I must admit I am baffled. There must be something that we are missing somewhere.

I know you have had the bypass spool out of the filter head a couple of times but will the filter head come off complete so that you can have a good look at it and at the same time check on the oil passages that are feeding to/from it.?