D6N XL Dozer Mossy Green Transmission oil

The transmission cooler is part of the radiator assembly so you have to remove the complete assembly first then separate it into the component parts. That's not a small job.

Nige said: The transmission cooler is part of the radiator assembly so you have to remove the complete assembly first then separate it into the component parts. That's not a small job. Click to expand... Thanks for the attachment. Definitely a job to be handled by Cat shop or FSU.

I was thinking that it would be an oil/water cooler mounted on the side of the engine which would be relatively easy to remove and clean. Being as it’s part of the radiator assembly my call would be not to bother

I’m late to the party. Wow, that’s really gross looking oil. Nige and I chatted about it. I’ve never seen that condition before in a piece of mobile equipment. Mostly in large turbine lube oil reservoirs, offshore marine gear. Very interesting. Thanks for sharing.

Coaldust said: I’m late to the party. Wow, that’s really gross looking oil. Nige and I chatted about it. I’ve never seen that condition before in a piece of mobile equipment. Mostly in large turbine lube oil reservoirs, offshore marine gear. Very interesting. Thanks for sharing. Click to expand... Any words of wisdom regarding how to get shot of it......?

Waiting on the lab results to be uploaded into vision link, but lab supervisor sent me this email of his preliminary inspection of the Trans and Hydraulic samples sent in last week. " This looks like dye to me. No signs of water in the sample. The hyd sample if you can see has a red tint to it also. This is not uncommon on break-in factory oil." and "We don’t check for Algae but there would need to be condensation which would show up as water. As far as the dye.. The factory commonly uses dye to make sure there are no leaks before the machine leaves the factory" IMO, the trans oil does not look normal. The unit has never had any leaks to chase down by adding "dye". This along with a E1267-1 "Hyd Filter Restricted" message. Maybe a bad restriction sensor, dont know. Nonetheless, the trans oil will be changed out.

Coaldust said: I’m late to the party. Wow, that’s really gross looking oil. Nige and I chatted about it. I’ve never seen that condition before in a piece of mobile equipment. Mostly in large turbine lube oil reservoirs, offshore marine gear. Very interesting. Thanks for sharing. Click to expand... Ive seen this in untreated diesel fuels and jet fuel storage tanks that have set for long periods, but never in trans, hyd, or engine oils.

It wouldn't be unusual for an oil to have dye in it from the factory, but there are only two colours - red & blue. So I'm not sure it's dye, even badly discoloured. We always ran dye in transmissions and hydraulics in machines with complex systems, basically so that if oil was dripping we could tell which system it was coming from. Ask the lab supervisor if he would care to have a crack at explaining the green colour when only red & blue dyes (Cat Part Numbers 9U-5031 & 9U-5032 respectively) are available through their parts system. Other manufacturers DO have green oil dye BTW, but not Cat.

This is a zoomed in version of the trans sample. Look at top of sample where it sloshed up against clear plastic bottle above sample level. They are assuming that with no water content in sample, "algae" or what I call microbial growth is impossible.

I don’t think a biocide would be necessary. A service and normal operating temperature should kill anything present. Let’s see the filter cut open.

Coaldust said: I don’t think a biocide would be necessary. A service and normal operating temperature should kill anything present. Let’s see the filter cut open. Click to expand... I will have our ranch foreman remove and cut open the existing filter. The filter that we replaced week before last is the old style - difficult to open, but replaced it with a new style filter that is easier to get into. Will post back as soon as he gets this done - not sure "when"

smphillipstx said: This is a zoomed in version of the trans sample. Look at top of sample where it sloshed up against clear plastic bottle above sample level. They are assuming that with no water content in sample, "algae" or what I call microbial growth is impossible. Click to expand... Cat SOS lab techs and lab managers are not trained on this subject. It’s not in their wheelhouse. The hydrocarbon utilizing microbes that live in diesel are not the same “bugs’ that live in lube oil. Lube oil doesn’t need a water interface for stuff to grow in it. There is enough water in the air to feed the types of mould and bacteria that can live in lube oil. For some reason, tribologists call it mould instead of mold. I didn’t spell it wrong.

Coaldust said: For some reason, tribologists call it mould instead of mold. I didn’t spell it wrong. Click to expand... Maybe they were English.?

A life time of doing this stuff, I’ve never seen this in mobile equipment. Think of all the old equipment sitting around for decades. The oil may be discolored, there may be water in the bottom of the reservoir, but there isn’t anything growing in it. Same with vented lube oil storage tanks and drums. For fun, try shining a UV light at it. That could help rule out fluorescent dye, maybe.

Coaldust said: I don’t think a biocide would be necessary. A service and normal operating temperature should kill anything present. Let’s see the filter cut open. Click to expand... He just pulled trans filter, sent pic. Looks good other than a slight green tint. BTW, the filter in pic has about 3 to 4 hard working hours on it. Not sure why getting a hyd filter restriction message I do not know of amy other hyd pressure senors other than the one coming out top of trans filter housing.

Need to cut the ends off the filter and spread the media out so we can see it.

Coaldust said: Need to cut the ends off the filter and spread the media out so we can see it. Click to expand... He is going to try and cut open the old filter in the morning and spread the media with pictures. Stated doesnt have another filter on location to put back in - didnt want to leave it open without a filter. let's see what the old filter tells when he gets to it tomorrow. Like most on here, never seen anything like this considering no solid evidence and filter restriction warning . . .I appreciate everyones input.

Coaldust said: Need to cut the ends off the filter and spread the media out so we can see it. Click to expand... See this VIDEO that shows how to cut a section out of the media, squeeze it in a vice, then fan it out to look for particles. HOLD THE BUS BEFORE CUTTING THAT FILTER OPEN............. Looking at the photo of the Event Code on the monitor screen my question is are we talking about the appropriate filter here.? From what I see a plugged transmission filter should throw up an Event Code of "E329 - Transmission Filter Plugged". Also the small icon that is illuminated below the window is the plugged hydraulic filter icon #14, not the plugged transmission filter icon #10. Has anyone taken a look at the hydraulic filter recently.? The above is another good reason why you REALLY need an Operation & Maintenance Manual.

Kale & arugula smoothie? Joe H

Nige said: See this VIDEO that shows how to cut a section out of the media, squeeze it in a vice, then fan it out to look for particles. HOLD THE BUS BEFORE CUTTING THAT FILTER OPEN............. Looking at the photo of the Event Code on the monitor screen my question is are we talking about the appropriate filter here.? From what I see a plugged transmission filter should throw up an Event Code of "E329 - Transmission Filter Plugged". Also the small icon that is illuminated below the window is the plugged hydraulic filter icon #14, not the plugged transmission filter icon #10. Has anyone taken a look at the hydraulic filter recently.? The above is another good reason why you REALLY need an Operation & Maintenance Manual. View attachment 364096 Click to expand... Actually, he does have an O&M manual. Thanks for pointing out hydraulic vs. transmission filter restriction. Cat told him to pull the floor panel and look around for any chewed wires or anything obvious. Not sure where the hydraulic system has a sensor for measuring filter restriction. Didnt see one attached to the hydraulic filter. I will convey that he needs to cut open the hydraulic filter as well. That was the first thing done when we got the code was change hydraulic filter. Sent in sample of hydraulic fluid as well. It looks normal - just not sure what is throwing the hydraulic filter code. Here is a picture of sample sent out on the hydraulic side. Filter looked good, changed it anyway. Electrical or sensor issue, do not know. After looking at that transmission sample, that got my attention and, at that time, didnt differentiate transmission fron hydraulics regarding the code. Thanks for bringing that to my attention. Aside from planning on changing out transmission oil and filter, I now need to refocus on what is causing the hyd filter restriction code considering still comes on with new filter. Attached pic of hydraulic sample