Allied Precision Hydraulic Filter Extension, WOW!!!!!!!!

This has got to be the best thing for a Farmall or IH since Red paint! I had called about two months ago to order the 56033 kit (fits 340, 460, 504, 544, 560, 606, 656, 660, 664, 666, 686). Last week they finally had a new batch in. Allied Precision is the only company I know of that builds these kits, I have looked far and wide. They also build parts for tractor pulling such as clutches and gears. They build HD Dodge clutches as well as have parts for IH, John Deere, Case, Allis Chalmers, Massey Ferguson, Oliver, White, Minneapolis Moline, and Ford tractors. Pretty slick company.

Their website is, http://www.allied-precision.com/index.htm

Now for the juicy stuff... Pictures of my journey with the Farmall 504 conversion. The reason I wanted the filter extension was that I replaced the old 12 GPM pump with a fresh 17 GPM after installing a Koyker FEL... I had a lot of pump noise after the 17 GPM was installed. I thought the rubber lines were transmitting the sound... More flow, though sometimes the hydraulics were jerky...

There will be many pics here.

Modified Hydraulic Lines




Old Hydraulic Filter Unit




Whats This??? Could this be part of the FLOW PROBLEM?




Seems the Bigger 17 GPM Sucked the Guts out of the Filter Gasket!




Here is the Gasket after I Removed the Filter.




Size Comparison Between the Two...




Now for the Actual Element Comparison...




Just a Little Difference in Surface Area in Square Inches




Shot of the Extension... I Usually Repaint Anything I Remove... One Piece at a Time, Like Johnny Cash.








Thanks for reading this, I appoligize for the many pictures for those on dial-up, but I am really excited about this filter upgrade . It was about 45 degrees today when I cranked er' up and it only had a little whine for about 5 minutes, then went away as the oil heated a little. I feel I was starving the pump drastically with the old filters and the sucked out gasket.

I fully recommend this to any one owning an IH product or the select few JD's that the also make extensions for. I believe it is worth its weight in, well not gold but maybe silver


Charles

i have had the 'two' filter extension on my 1466 and 1486 for a couple of years now.

Makes you wonder why the OEM did not engineer them with more flow and holding capacity. Was it to keep the farmer buying filters more regular? The technology of the 60's and 70's did not exist to make a better filter? This Allied Precison Unit is as good as sliced bread!

Charles

Why not just use the CNH hyd filter #388084R93?? Its shaped nearly exactly as the "new" one installed now and you wouldn't have had to spend the extra $$$ on a steel filler/spacer plate. It's an exact replacement drop-in element.

I have not seen the twin donut style hyd filters on a 504 since they were new in the 1960's. How long has it been since they were looked at??

Less than 6 months... My CHN dealer said that the dual rounds was the only thing that would fit... I have changed them regular, they do not last long before they loose capacity. I think he liked selling me a $40 filter kit for two rounds and a gasket. The big filter I have on now is about $21 localy.

Charles

Your "dealer" needs an education. The 388084R93 filter is less than $20. They must be the only ones in North America who carry the twin donuts.

Good luck with the new setup! It should work good with the high flow pump!!

388084R93 is the #IH lists for the 12gpm pumps,is has evenlower flow rate than the 2 doughnut set up that Charles was using. I for one will be ordering the spacer,filter set up first thing Monday. According to IH;s own Blue Ribbon service manual, only about 60% of the oil in system goes through the filter,the rest goes through that bypass/releif valve that fits in the filter.

If I recall, the 2 small filters are good for 14 GPM at best. My system picked up and ran with the new larger filter (388085, from the Allied Precision site). I will go out to the shop later to get the actual IH part number. I will post it tonight.

Charles

Thanks Charles, I've been looking for one of those. My dealer and the case website doesn't even show the parts for the dual filters anymore. They don't even stock the thicker single filter and said they haven't sold any in years and years. They didn't carry any adaptor either.

CaseIH calls for the single 388084R93 filter for the 12 gpm pump. Wix number is 51469. The filter thickness is 2.473 inches and rated at 25 microns.

CaseIH calls for the single 388085R92 filter for the 17 gpm pump. Wix number is 51470. The filter thickness is 3.597 inches and rated at 35 microns.

The thicker one is about 1.124 inches thicker and I assume that is about how thick your spacer is.

Wix makes filters with a metal outside surface instead of the paper surface of the case filter for what that is worth to anyone. Less chance to tear up and end up in the pump. At O'reillys they are a little cheaper also but may need a day to ship if not in stock.

My question is about putting some type of gasket cement on one side so it stays stuck and then you only need to change one gasket with the filter? And then which side would be best to stick the adaptor on, the tractor or the cover plate? Guess I'd go to the tractor side.

(technically, I've never replaced the gasket but just bolt the plate back up and it doesn't leak. The gasket is stuck to the plate. The spring of the bypass pushes the plate away.)

The CNH part number is the 388085R92 (suspected that one). The spacer is about the thickness of the difference. It included 2 gaskets, 1 filter, 1 spacer, 4 - 3/8"x2 1/4" bolts, and 2 - 3/8" studs with nuts. I placed the studs at 3 and 9 o'clock, wet the gasket with hydraulic oil, placed the spacer, placed the 2nd gasket over the studs, placed the filter, and then buttoned up the cover. Actually I had more fun than that. I forgot that one of my holes had been stripped and drilled to a 7/16". I had to run into town and get a 7/16" x 2 1/2" bolt and cut it down. Also I had to drill one hole of the spacer out to 7/16" :lol: Working on this old stuff is fun...

Charles

Learn something every day. Never heard of a thicker filter for these tractors. The history of the original filter is that the 4 and 560 came with just the screen at first and then when we started having troubles with the teledepth hydraulic valve for the hitch a field change conversion package was sent out to be put on all tractors with fast hitch, it contained the two donut paper filter inside of the screen, original screen couldn't be taken apart. Then the all paper filter was introduced a few years later in 504 and 656 tractors. I have seen some of the paper filters actually suck a hole in them and let all the contaminents into the hyd system but IH beefed up the filter after that. I left CaseIH 13 years ago so I am guessing somethings have slipped past me even on those old tractors. I can see where a larger filter surface would surely reduce cavitation and thus noise level.

nice to see you having success!

I wonder if the thicker oval filter for 17gpm pumps was only an industrial/utility option? and maybe not until the 656/544?

power steering vs your plumbing working for you? I was thinking about you and that some more since i last mentioned it...so i'm just wondering.

Once you get a handle on hydraulics, and start looking at tractors as they come from the factory, you wonder why they restrict things down so much, or do something right on accident, or make a simple operation so complex to get from point A to B... I guess as long as they make it possible to tailor the tractor to your needs as an afterthought that is all that matters!

I like that you didn't need to go with an external pump system and that the factory system is still fully functional any time you need it--nothing in the setup makes the tractor cumbersome to use or maintain (other than loader arms and frame). That is the type of system i would personally seek as well. I'm drawing inspiration from you to change my attitude and "just do it" when it comes to projects (at least as my shelter and $ situation
allows). Also nice to see some of mine and mostly others' armchair engineering (and good advice based on experience) working in the real world.
good luck
karl f

Karl F, Thank you for the kind words of concern and wisdom. You do not post as often as some, but when you do it usually has purpose. I thumbed my IH TC-88 parts maunal for the correct "stock" filter and found none for the 17 GPM pump, but found the pump. My dealer said the "donuts" would work for both. I have since quit using that CNH dealer since the Branson/McCormick dealer closer to me is now an IH parts dealer, much brighter guy.

As for my plumbing... I chose to go the route I went for simplicity. I did not have to alter ANY steel lines. Yes, you warned me against using the plumbing path I drew out because the power beyond valve would take priority from the steering when activated. The steering does fade while using a PB valve, but I have learned to circumvent this by planning my movements. It is rare I am turning and using the loader at the same time. Besides, as fast as the loader is now I do not have to be moving and cycling the valves to save time. I dare to say it is faster than most NEW OEM systems! Sometimes it is almost too fast! Well, never too fast.

Karl F, I do not know if you saw the plumbing arangement on the PB valve body its self or the return lines. I can post pics later if you would like. I used open centered (non poppet) qiuck disconnects and alternated the male and females so I could remove the valve tower completly if required and restore the OEM system if need be. For general use, I can just unplug the 4 - 1/2" qd's from the loader lines and be out in 10 min flat.

An external pump and reservoir would have been a PITA from the get go... Sorry Allan NE, and others that suggested that one, I did not agree with that one bit. I think my total cost in pump, fittings, hose, valve, steel, ect for the hydraulic redo including "freebe's" was about $500-$600, plus the $3800 for the loader. Grand total of about $4400. I feel it was worth it even if it was worth more than the old 504 itself :twisted:

I have been looking at various OEM designs from the past and wonder "what the heck?" Being an Engineer myself I tend to look deeper into things than required. I am proud of my creation. And I am glad I have motivated and inspiref others as well.

The reason I am so chatty is that I was burning a brush pile Sunday and jammed a limb into my eye... I am on meds and at home during working hours... My wife would beat me if she knew I was not resting I would rather be sharing info here!

Thanks guys, with out ya'll I would have scrapped that dang 504 years ago.

Charles

I was looking around on NAPA,s website and found this. FIL1139 NAPA Gold Hydraulic Filter... $18.29. These are the twin dounuts... For those still wandering. Replaces OEM# 375085R91.

The filter for the Allied Precision Extension is:
IH 388085R92 = WIX 51470 = NAPA GOLD FIL1470

Charles

Hello, I just purchased A Farmall 460. The lines under the seat were leaking when I looked at and the fixed by a welding shop, unfortunately they started to leak where the fix stopped. My question is what is the best way to fix this? Is there a company that makes hoses for this problem? Thanks. Tim

CHN may have the OEM lines. I would try to braze them up myself. I am sure they are not cheap. There are salvage yards around the US that may also have them. Here is a list of salvage yards to try!

http://www.atis.net/salyards.shtml

Good luck friend,

Charles