method/tool to remove hydraulic filter on NH backhoe

ggb3 · Oct 14, 2019

Hi All,
I need to replace a hydraulic filter on a New Holland 2000 LB75.b backhoe. This one is internal to the hydraulic tank and has a diameter of ~5 1/2 inches and it is 6 or so inches inside the tank with a circular access hole. Regular strap-wrench will not work. Anyone know if a OTC 4440 Heavy Duty 3-Leg filter wrench is large enough to grab it?

Thank you,
George

Jim.ME · Oct 14, 2019

(quoted from post at 18:22:52 10/14/19) Hi All,
I need to replace a hydraulic filter on a New Holland 2000 LB75.b backhoe. This one is internal to the hydraulic tank and has a diameter of ~5 1/2 inches and it is 6 or so inches inside the tank with a circular access hole. Regular strap-wrench will not work. Anyone know if a OTC 4440 Heavy Duty 3-Leg filter wrench is large enough to grab it?

Thank you,
George

Goggle it. 4440 does 3" to 4-3/4". a 4441 will do 4" to 6-1/2" Here is a link to the OTC oil tools catalog you can scroll through and find more types. There may be another type that will work; like the band type you could use a extension and ratchet on.

https://www.otctools.com/products?f...ct_variation%3Afield_categories:32&page=1

ggb3 · Oct 14, 2019

Thank you, greatly appreciate it. I went to the site, but I was tangled up in Amazon and did not see the dimensions. Apreciate the work.

George

Russ from MN · Oct 14, 2019

I bought a 3-jaw wrench at Harbor Freight but it's for smaller filters, works great! Don't know if they have bigger ones or not. The first
time I needed something like that I made one by bolting a piece of roller chain to the end of a shaft.

grizz02 · Oct 14, 2019

strap wrench

Jim.ME · Oct 15, 2019

grizz02 is right, a strap wrench could work, just depends on the type of strap wrench you have. A socket strap wrench, without a handle, that can use a ratchet and extension would be an option as well as the OTC wrench. There are a number of that style available, many parts stores have at least one of the types.

I only see one three jaw wrench on the HF site and 3-7/8" is max diameter.

Hobo,NC · Oct 15, 2019

I prefer a oil filter cap wrench for all applications, google

oil filter cap wrench sizes

Jim.ME · Oct 15, 2019

Hobo,NC I don't disagree with you on cap wrenches, however from the hydraulic filters (and large engine oil filters) I have seen of his size, 5-1/2" diameter, all have had a smooth body (no flutes). I don't know that I have ever seen a cap wrench that large, if it did have flutes. The OTC three jaw wrench comes as close to a cap wrench as it gets for this one, I think. I have all three of the type strap wrenches I posted acquired over the years from working on heavy equipment, and have had good luck with them on large filters.

Hobo,NC · Oct 15, 2019

Yep those can be a bear to get off... Once you crush them with a strap wrench you are going into no-mans land : (...

Determined · Oct 15, 2019

In need of a strap wrench for an oddball job I took an old automotive timing belt, cut it and riveted one end on to the length of an 8 inch piece of 1x1 square tubing.

Fits on any size filter, after you wrap it around the teeth lock into each other, the harder you pull the tighter it holds.

Free and effective.

ggb3 · Oct 15, 2019

(quoted from post at 06:54:56 10/15/19)
Hobo,NC I don't disagree with you on cap wrenches, however from the hydraulic filters (and large engine oil filters) I have seen of his size, 5-1/2" diameter, all have had a smooth body (no flutes). I don't know that I have ever seen a cap wrench that large, if it did have flutes. The OTC three jaw wrench comes as close to a cap wrench as it gets for this one, I think. I have all three of the type strap wrenches I posted acquired over the years from working on heavy equipment, and have had good luck with them on large filters.

To that point and for some follow-up, here are some pictures. First is new filter, second, filter and location. This filter is installed behind the circular access port in the hydraulic reservoir, about 5-6 inches in.

I am trying to replace without destroying the old one until I am sure all is well with the new one......

Thanks for everyone's suggestions,

George

Determined · Oct 15, 2019

Do a Google image search for part # 85813350 and you will see a picture of the wrench you need to buy or make to remove your filter.

Or look it up on the New Holland parts site.

ggb3 · Oct 15, 2019

With that search, I get the wrench for the hydraulic filler/filter assembly. That is on top of the tank to fill and as a filtered vent. That wrench is significantly smaller than this filter. Apologies if I am being thick and misunderstanding.

George

ggb3 · Oct 15, 2019

Just to add, I ordered the 4441 unit, should be here tomorrow and hopefully will do the trick. If not, I will do the timing belt deal.

Determined · Oct 15, 2019

(quoted from post at 17:32:46 10/15/19)
With that search, I get the wrench for the hydraulic filler/filter assembly. That is on top of the tank to fill and as a filtered vent. That wrench is significantly smaller than this filter. Apologies if I am being thick and misunderstanding.

George

Does the end of the filter screw onto the machine and does that end have a hex for a wrench on it?

If so then possibly you will need a larger version of the one I referenced to above and enough room to be able to reach in and use it.

Jim.ME · Oct 15, 2019

If the filter you have in hand has a hex on the other end where it screws on, make a wrench out of 1/4" or 3/8" flat bar or plate. I am guessing it sets in the tank such that you can reach in the access hole to loosen it with a wrench. That type filter(screen) needs to be turned from the hex, and you will need to tighten it when you put the new one in. I wouldn't turn it from the closed end with the OTC wrench or use a strap wrench on that style.

The dealer should be able to tell you if the special wrench fits that filter. I think it might; as there is nothing that looks like it would need that wrench; where it is shown with the filler parts of the reservoir in the parts catalog.

ggb3 · Oct 16, 2019

(quoted from post at 18:35:37 10/15/19) If the filter you have in hand has a hex on the other end where it screws on, make a wrench out of 1/4" or 3/8" flat bar or plate. I am guessing it sets in the tank such that you can reach in the access hole to loosen it with a wrench. That type filter(screen) needs to be turned from the hex, and you will need to tighten it when you put the new one in. I wouldn't turn it from the closed end with the OTC wrench or use a strap wrench on that style.

The dealer should be able to tell you if the special wrench fits that filter. I think it might; as there is nothing that looks like it would need that wrench; where it is shown with the filler parts of the reservoir in the parts catalog.

To answer you and Determined, together, yes, it has flats for a wrench to tighten and loosen and flat to flat is better than 4 inches. If I could have found a wrench to buy, I would have and still will. I do not think I will get the torque out of the filter wrench to loosen it. It would take one of somewhat special design to get in there and then it opens up a bit. I looked in the service manual and there is no mention of R&R.

Thanks all,
George

Jim.ME · Oct 16, 2019

Curious about why you are changing this one, the fill opening in your tank is filtered/screened, correct?. This actually appears to be the suction screen, not what I would call a true filter. Is it in fact just a screen you can shine a light through or does it have a filter media in it we can't see? Can you see a bunch of foreign material stuck to the outside of it? I ask as it is not uncommon to just wash that type screen off if needed. Suction screens would not fall into normal filter changes in my mind. I believe you have at least one actual spin on hydraulic filter else where in the system.

Have you tried asking the dealer how they change these filters, or if they even do change them?

If space is limited I could see using the new filter to make, or having a shop make, a crowfoot type wrench that could be turned with a 1/2" drive (drive hole just outside the filter OD).

Just my thoughts

ggb3 · Oct 16, 2019

(quoted from post at 05:36:41 10/16/19) Curious about why you are changing this one, the fill opening in your tank is filtered/screened, correct?. This actually appears to be the suction screen, not what I would call a true filter. Is it in fact just a screen you can shine a light through or does it have a filter media in it we can't see? Can you see a bunch of foreign material stuck to the outside of it? I ask as it is not uncommon to just wash that type screen off if needed. Suction screens would not fall into normal filter changes in my mind. I believe you have at least one actual spin on hydraulic filter else where in the system.

Have you tried asking the dealer how they change these filters, or if they even do change them?

It is not just a simple screen, it has some type of media in-between the mesh and interior space. The hydraulics seem a hair slow and figured this would be a good start. The filter must pass 40 gallons a minute for the pumps spec. You can't see through the screen, so it is something fine, but what the media actually is, I do not know, however, it is not very thick. Our local dealer is less than helpful, so I did not ask. I will give them a holler and see.

There is another spin-on filter for hydraulics, I just figured this has probably never been changed.

The 4441 filter wrench come in today and it seems fairly well made. I think the torsion may be too much for the filter on removal, but I will give it a try, just being easy. Unfortunately I do not see a torque spec for this filter-screen in the manual.

I may post again to see if one of the fellers here would make a wrench of a particular design if this 4441 does not work.

Thanks again,

George

If space is limited I could see using the new filter to make, or having a shop make, a crowfoot type wrench that could be turned with a 1/2" drive (drive hole just outside the filter OD).

Just my thoughts

ggb3 · Oct 16, 2019

Do not know how I jacked that reply format up, hope it is not too difficult to read.

Geo.

ggb3 · Oct 16, 2019

(quoted from post at 15:39:29 10/16/19)
Do not know how I jacked that reply format up, hope it is not too difficult to read.

Geo.

Me again,

I had a good look at the new screen and shined a light through it, I was incorrect, there just seems to be folded screen for increased surface area with no other media less a strong backing. .

I have to replace the large suction hose after the screen going to the pump inlet so I will get a look from the other side of the screen and if filthy, lightly try and remove the original and replace, clean the original and store for later days......

Appreciate the all the options and guidance y'all,

George

Jim.ME · Oct 16, 2019

If you are replacing that large suction hose because it is failing for some reason, it might be collapsing internally, that might be your issue not the filter/screen. Just a thought. The parts manuals show an elbow in the pipe the hose hooks to coming from the reservoir. Hope you can see inside, but if the outside is clean, inside the reservoir, it should be fine.

Just a side note. I know the books aren't always right due to running changes, but in the New Holland parts manuals on line, that filter/screen only shows in the LB75 series and the LB75CP reservoirs. It does not appear there was any filter/screen in the LB75.B reservoirs. Or maybe I missed it, that happens too.

method/tool to remove hydraulic filter on NH backhoe

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