What oil filter element do I need? |
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sean
Moderator Group Sponsor Member Joined: 20 July 2005 Location: North Idaho Status: Offline Points: 7388 |
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Posted: 10 July 2011 at 2:58pm |
Q: what oil filter element does the CJ-2A use? A: depends on which filter canister assembly you have Over the years, 5 different canisters were used, calling for 4 different elements. Most auto parts stores (and online filter lookups), when asked for a "CJ-2A" filter, ONLY list 1 or 2, not all 4 possibilities. The list below was compiled using Willys original part numbers at the manufacturers web site cross-reference lookups. Try them for yourself: Fram: http://www.framcatalog.com/ 1) Identify your filter assembly. Use the parts lists illustrations. They are plenty clear enough to identify each of the 5 filter assemblies. 2) find the corresponding element below (all dimensions in inches) Shown in 1st. ('45) & 2nd. ('47) parts lists: p/n A-1230 - Oil filter Assembly (Fram F4 "Military Junior", w/2 bands) p/n A-1236 - Element, oil filter (not listed in any of the cross-references) superceded by p/n 119952 (Fram C21) in later "Popular Parts List": Fram: C4P - 4.83 h x 4.33 od x .55 id NAPA: 1100 - 5 h x 4.53 od x .533 id (cellulose) Shown in 2nd. ('47) parts list: p/n 643147 - Oil filter Assembly (Fram w/welded bracket, illustration #27) p/n 643182 - Element, oil filter (not shown in illustration, does not x-ref) superceded by p/n 645637 - Element (from illustration) Fram: C4P - 4.83 h x 4.33 od x .55 id p/n 645638 - Oil filter Assembly (Purolator 1-band bracket, illustration #11) p/n 645636 - Element, oil filter Fram: C134PL - 4.11 h x 3.48 od x .7 id Shown in 3rd. ('49) parts list: p/n unknown - Oil filter assembly (Purolator 2-band bracket, illustration #18) p/n 645636 - Element, oil filter (same as above) p/n 647342 - Oil filter assembly (Fram F3-P2, 2 mounting ears, illustration #8) p/n 647345 - Element, oil filter Fram: C3P - 4.22 h x 3.84 od x .55 id Another element listed in the 1961 "Popular Parts List", supercedes 645636: p/n 911208 (Purolator) Fram: C134PL |
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AbeCJ2A
Member Joined: 04 Dec. 2013 Location: Buffalo, NY Status: Offline Points: 96 |
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My 2A came with no oil filter and I have always wondered if they were an option, or if mine just had it removed. I'd like to add one and would consider a modern aftermarket remote set-up, or an original, but I'm not sure were to plumb it in. I see a few possible ports that may have oil pressure, but I'm not sure and have not tested them. Any comments?
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scoutpilot
Member Joined: 30 Dec. 2008 Location: Asheboro, NC Status: Offline Points: 4373 |
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The high pressure port is forward and down slightly from the fuel pump. There should be a square shouldered 1/4" NPT plug there. Installation of the high pressure (out to filter) line is best accomplished with the fuel pump removed. Use a 90º fitting.
The low pressure return enters at the timing gear cover top. Brazed to the cover is a 1/4" NPT female fitting. Installation of the low pressure line is best accomplished with the fan removed and the generator displaced.
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AbeCJ2A
Member Joined: 04 Dec. 2013 Location: Buffalo, NY Status: Offline Points: 96 |
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I think I see a plug below and slightly forward of the centerline of the pump which sounds like the one you are referring to, and I also see a square plug in a downward angled port rearward and slightly below the pump that I thought might be the one. Any idea what that one is for?
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scoutpilot
Member Joined: 30 Dec. 2008 Location: Asheboro, NC Status: Offline Points: 4373 |
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I believe it is a low-pressure drain plug only removed for rebuilding.
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rocketeer
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Edited by rocketeer - 22 Oct. 2014 at 1:27pm |
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scoutpilot
Member Joined: 30 Dec. 2008 Location: Asheboro, NC Status: Offline Points: 4373 |
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That diagram is confusing. It shows the line running to the fitting behind, not ahead of the fuel pump. The photo shows the correct place.
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BrianJ
Member Joined: 06 Oct. 2014 Location: Hagerstown, MD Status: Offline Points: 564 |
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This helps a lot. My 48 CJ2A doesn't have an oil filter on it either.
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WellFedHobo
Member Joined: 16 Sep. 2010 Location: Little Rock, AR Status: Offline Points: 638 |
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I know it's an 11 year old thread, and it's not great forum etiquette to bring back very old threads, but I just wanted to thank sean for the info. I didn't realize there were so many varieties of oil filter canisters and I learned that I have the two band Purolator style, which is why the oil filter and gasket I ordered awhile back don't fit and would never seal. About to head to Napa to see if they have a 1010 filter in stock... (And now it looks like the Fram stickers I put on the cleaned up canister are all wrong.)
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Brad
1948 CJ2A #158011 "Sunk Cost Fallacy" 1945 T3-C #1431 |
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Oldpappy
Member Joined: 09 Apr. 2018 Location: Tennessee Status: Offline Points: 4908 |
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Yeah, I just read through this thread not realizing it was an old one, and was about to tell the guy who didn't have an oil filter that I have a couple of them I don't really need.
At one time there was a story circulating around about it being a good idea to remove the oil filter to keep from starving the main bearing journal that feeds the circuit. In my opinion that was not a good idea. There was an issue with that, but it is properly resolved by using a timing gear oiler with a smaller port, not removal of the oil filter, but I suspect that is why we sometimes come across Jeeps with them missing. |
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If you can't get there in a Jeep you don't need to be there!
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jaksjep
Member Joined: 03 Nov. 2013 Location: Southern CA Status: Offline Points: 471 |
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How do you get the oil out of the filter canister when doing an oil change? I have used rags, paper towels and several different "suction" devices, but I just can't seem to get it all out. Has anyone tapped the filter canister near the bottom and added a valve on it to drain it?
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My posts are my personal opinion and are not legal advice as I am not an attorney. If you act on any of my comments you do so at your own risk.
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JohnB
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I use a dedicated turkey baster to remove the remaining oil.
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Bruce W
Member Joined: 29 July 2005 Location: Northeast Colorado Status: Offline Points: 9651 |
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Yep, turkey baster. Some have a drain plug but it’s not really on the bottom. There are a lot of places in the engine that can’t/don’t drain completely. You never get ALL of the old oil out of the engine. A teaspoonful of old oil in the filter can isn’t going to hurt anything.
BW
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It is NOT a Jeep Willys! It is a Willys jeep.
Happy Trails! Good-bye, Good Luck, and May the Good Lord Take a Likin' to You! We Have Miles to Jeep, Before We Sleep. |
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cpt logger
Member Joined: 23 Sep. 2012 Location: Western Colorad Status: Offline Points: 3043 |
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If it is critical to remove all of the oil from the filter, I unbolt it & turn it upside down. Then I flush it with clean solvent or diesel. Otherwise, I use an old oil pump off of a Chevy 216 engine driven by a drill motor & rags. I then use solvent or diesel to get all the sludge out. I do not remove all of the old oil if it has no sludge. The new oil gets diluted with the dregs of oil still in the crankcase anyway. IMHO, Minor dregs, not sludge, in the filter will not make any difference. It is critical to have a clean oil filter housing if one ever finds any shavings or chunks in the oil, metal or other material. It is also critical if the engine has tossed a rod, broken a crank or cam shaft, burned a hole in a piston or a valve, or any other catastrophic failure. IHTH Cpt Logger.
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