D42T Outer Assembly 6B1851 Inner 8b5755

Hi Bernie,
I've read your post several times....and I must say I'm a little confused about what your asking.....and I wouldn't want to respond with the wrong info for something as critical as main engine filtration.

Are you wanting to convert to full flow? or just looking to verify the required parts for the original by-pass system?

I'm sure I have the info once pointed in the right direction.

I'f anyone can add to the interpretation, please jump in.

I want to keep with the bypass system. I do not plan on the conversion-

Not having all the parts in the housing now makes a comparison difficult, and not having seen them before makes it equally difficult to know what belongs.

The outer element is an aftermarket so before I buy it, I wanted a little feedback on if it looked like the appropriate part.

Still a Greenhorn...

Those numbers are good.
The 8B5755 inner element shows up in the 4R D6 (D4600) tractor. The D4 would normally be a 6B907. They both use the same filter housing and parts so I don't seen any reason why they would not work.

Why would you not want to convert to the advantage of full flow filtration??

Path of least resistance is the reason why I am not looking to convert. The filter I have now is a NAPA GLD 1165 and just sits in the filter housing so I am not sure what good it is doing. I have a spring plate missing-snap ring-and possibly the clamp on the bottom. As far as I can tell, these are the parts I am missing:

1. 6B5439 Spring, ( I think this is a piece of metal-not a coil spring).
2. 6B7279 Snap Ring
3. 6B9344 Retainer or Clamp-not sure

I can get (1) and (3) for sure.

Regarding inner element numbers my parts book form 9068 shows the T top and calls for a 6B907 element and a 6B1851 element assembly. Another parts book I have form 8480 dated March 1944 lists the element 8B5755, (purolator #24901), and the same outer assembly as shown. I opted for the earlier number due to the date of publication of Form 8480 relative to my tractor.

I see the advantage of the full flow. If I am correct the full flow came to existence because the filter technology advanced enough to pass enough oil while filtering o keep up with the flow demands of the Diesel.

I decided to reinspect the filter housing after reading a post on the full flow and my Servicemen's Reference. I decided to break it apart as I am pulling my injectors for inspection so the machine is down for a bit anyway. I am going to service the crankcase oil and flush the main at this point too. I did it when I first got my D4, but not properly I think. I have a belly pan on the tractor, so I do not foresee at this point cleaning the oil pump sump screen.

All that said-If I were able to obtain the dozen parts for the conversion-I would likely convert. I have a message into Machinery Trader-

Thanks for the response OM-I've been able to load the machine up over the past month or so. We are doing some work on our house and I had a professional excavator move about 500 yards of material and stockpile it and I pushed and spread it ready for seeding. My temperature gauge does not function, but I think I got it up to operating temperature.

bernie

OK I am on this again and if I don't get moving on it my injectors and precups will be installed and I will still need to deal with the oil flow.

Does anyone have a full flow conversion kit for a D42T series?

Bernie, those 9F6439 conversion kits have been obsolete for some time....I might have even bought the last one several years ago😉 Unless your real lucky I would just look for a parts tractor that already has the pieces you need.