Servicing Oil Bath air filter

[JD Wayne]

I have a quick question. When I service my air filter with oil, do I add the oil to the outer portion of the filter cup?(JD 70 Diesel). This is my first time dealing with an oil bath air filter.

 

[Tx Jim]

Yes add oil to bottom of cup up to the "full line".

 

[Bob Bancroft]

Not familiar with the Deere, but it seems like the ones I recall have little holes through the baffle, so that when filled to the line, the oil is at the same level in the inner, as well as the outer cups.

 

[buickanddeere]

Directions are in the operator's manual. New real factory manuals from then nice folks at 1-800-522-7448 on CD or hard copy.

 

[James Howell]

Reviewed the [b:654c4848f0]OPERATOR'S MANUAL OM-R2032R JOHN DEERE TRACTOR MODEL 70 DIESEL (GENERAL-PURPOSE AND STANDARD)[/b:654c4848f0] under the [i:654c4848f0]CHECKING DIESEL ENGINE AIR CLEANER.[/i:654c4848f0] on page 67.

Paragraph 5 states the following:

"[b:654c4848f0][i:654c4848f0]If there is 1/2 inch of dirt in the bottom of inner or outer oil cup or if the oil is too thick with suspended dirt to flow freely, service the air cleaner. See "30 Hour Service." If oil level is low and ail appears clean, add oil of correct weight to bring it up to the oil level mark. DO NOT FILL ABOVE OIL LEVEL MARK.[/i:654c4848f0][/b:654c4848f0]"

Take a look at the photos below of the oil cup.

Note the six "[b:654c4848f0][i:654c4848f0]little holes[/i:654c4848f0][/b:654c4848f0]" in the inner oil cup mentioned below by [b:654c4848f0]Bob Bancroft[/b:654c4848f0].

Note the OIL LEVEL mark on the outer oil cup.

Hope this helps.

 

[GreenBlood]

Self, explantory picture

 

[FWB in SK]

If everyone had manuals there would be no need for this forum . God thing some people don't.

 

[FBH44]

It would be interesting to have an explanation of how the air flows, how the oil level moves as the air flows.

 

[Bob Harvey]

B & D. got a hat ?

 

[James Howell]

Reviewed the [b:654c4848f0]JOHN DEERE General-Purpose TRACTORS[/b:654c4848f0] brochure [b:654c4848f0]A456-39-10[/b:654c4848f0] under the [i:654c4848f0][b:654c4848f0]Air Cleaner[/b:654c4848f0][/i:654c4848f0] topic on page 24.

Take a look at the photos below.

Hope this helps.

 

[Lee B]

Cartoonish drawing does no justice as it's wrong. Dirty air enters at a center down tube which stops about a 1/2 inch under the oil level inside the inner cup of the oil reservoir. This causes air to bubble up along the outside of this inlet tube, splashing oil up into the separation packing whether it be steel wire mesh or organic fiber mat. As the air twists and turns on it way up thru the packing, the dirt it carries is caught by returning oil flowing down from gravity thru the packing. The packing serves to separate both oil droplets and dirt from the air flowing thru it. The little holes are there to allow displaced oil to refill the inside cup as the reservoir fills with captured dirt.

Without the bubbling oil being carried up into the packing to flush it of dirt, it can't work for long. So it's a necessary concept to get across. And this is where the well intended drawing fails. Good artist and nicely done in period art, but he lacks practical knowledge. Is this a John Deere publication?

 

[James Howell]

Yes, this is a John Deere advertising brochure [b:654c4848f0]A456-39-10[/b:654c4848f0] published October 1939.

Please keep in mind that I'm only the messenger.

Thanks for the detailed information.

 

[Kent Petersen]

Lee if you new anything about JD air cleaners you would know that drawing is spot on for 1934 thru 1939 model A tractors

 

[buickanddeere]

The forum is is for covering what isn't included in the manuals .

 

[Lee B]

Thanks James for further information and all the fine pictures you so quickly post here - it's a very valuable resource that those of us that can't do that, envy and are grateful for, each and every time you do us this favor. Therefore your contributions here are immense and I for one appreciate it and the opportunity to thank you for it.

Kent, while those six air cleaners might look like that from the outside, I'll place even money on no red tornado vortex thingy inside with what looks like a cooking pot lid complete with center handle covering the oil reservoir exactly as depicted. My 44 A has it's air entry coaxial down the outside of the separation chamber and it's lip is below the oil level with a round bottom to the reservoir, no double cup here. End result is the same however, oil bubbled up violently into the separation media where it drains back both oil droplets and captured dust. The diagram fails to show us this air blowing oil upwards aspect or how it's generated and is my only real complaint. I think it's important to note that this vital detail is missing in the diagram since someone asked for more details on how the beast gets the job done and that means many more are wondering the same in silence. Your objections are noted, that's exactly what peer reviewed forums are all about. Not sure if I've addressed them to any satisfaction though.

Side inlet oil bath cleaners do exist, I use a re-purposed one on my VW microbus myself. There is a 90 degree elbow inside to centrally direct the inlet air into the double cup reservoir. It uses a similar double cup reservoir with flat bottom as shown by James's other pictures although this one is a bit smaller in diameter. I think there is no better air cleaner than a properly maintained oil bath air cleaner. But I have been impressed by modern double dry paper element systems at the same time.

 

[coonie minnie]

Please Buick, show us where it says, "This forum is only to discuss items not included in manuals." I don't believe I've seen that mentioned by the Yesterday's Tractor's
folks.

 

[Kent Petersen]

lee i will take your bet you still dont know what you speck of the oil level is high eniff that it fills the elbow part of the intake pipe and does take oil up into the cleaner. If it dident work i dont know how these oil tractors would have run 75 plus years. by the way i own a 1937 A that i restored has standard pistons and runs good

 

[Lee B]

I don't see that in the diagram Kent.

 

[buickanddeere]

(quoted from post at 08:48:43 05/24/15) Please Buick, show us where it says, "This forum is only to discuss items not included in manuals." I don't believe I've seen that mentioned by the Yesterday's Tractor's
folks.

Please Connie go away and quit being such a snoot. There is no excuse for cheapskates asking how much oil the crankcase holds when the data is in the operator's manual. Same goes for gear grinding the hydraulic pump and pto drives. Clutch service is another . Setting the carb and govener would probably be a favourite.

 

[coonie minnie]

I don't think I'm the one being snooty... have you found where your hosts suggest "to keep discussion to material not covered in manuals" yet?