Go Bottom

Advice opinions on woods 7500 pto pump or tractor hyd hookup

View my Photos
Sean Donovan
Join Date:
Posts: 1
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2002-03-22          36615


Greetings all, new to the group, been reading for a few days and have learned a lot. I am purchaing a new Kubota L4310 and woods 7500 backhoe. I am trying to decide whether to go with the pto pump hookup option or to run it off tractor hydraulics. Dealer is trying to sway me towards the pto pump option but I like the cleaner setup of running it off the tractor directly. Should be comparable cost { PTO pump is extra but so is getting the remote hydraulics to the back of the tractor} Anyone have any thoughts on which will be the more powerfull /better option?

I have an older arps 3pt hitch mounted backhoe currently in use on a IH 684 with pto pump, the pump always has to be tied down or it will clatter around and I thought running off the tracotr might make the unit a little more powerfull but I don't know enough about the specifics to be sure. I don't run the tractor at pto speed unless I really need the digging power so I spend a fair amount of time digging at half throttle where I figured tractor hydraulics might be throwing out more power to the backhoe.

Ohh one more question, the woods 7500 is available with 8" to 24" bucket sizes. From reading earlier posts am I to presume that digging with a 24" will be arduous/slow with a backhoe in this size? (I'm not trying to knock any trees over or remove any boulders just want to move more dirt faster for the occasional excavation project.

thanks for any recommendations,

Sean




Reply to | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo



Advice opinions on woods 7500 pto pump or tractor hyd hookup

View my Photos
Corm
Join Date: Feb 2002
Posts: 7 Northern Vt
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2002-03-27          36775


My advice would be to use the tractor hydraulics instead of the PTO pump. I believe your $$ would be better spent this way, as having the rear remote hydraulic connections block comes in handy for a lot of other things, like a hydraulic top link cylinder, wood splitter, dump trailer, etc. The tractor you are buying has plenty of flow and power to run the BH. And like you said, it makes for a cleaner looking setup.

I use the remote hydraulics for my backhoe on my Cub 7260, and it works fine. My Cub BH is a Woods 7500 with yellow paint. I would recommend a 16" bucket as a good all around bucket. Any smaller and you'll spend a lot of time moving any appreciable amount of material. Any bigger, and it doesn't have enough power when the digging gets real tough. I've found the 16" bucket works well for digging stumps too.

Good luck with whatever you decide to do.

Corm
....


Reply to | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo



Advice opinions on woods 7500 pto pump or tractor hyd hookup

View my Photos
steve arnold
Join Date:
Posts: 1
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2002-03-27          36780


I have the 7500 on my JD 970 with frame mount and pto pump and it works great. I dont have rear remotes so that effected my choosing. Rear remotes would be nice to have for other stuff but human nature will make you buy more expensive implements because you have them :).

IMO I think the seperate pump is cleaner functioning because the hyd. circuit stays closed. When I remove my loader, I always have a puddle of fluid on the ground and always looking for a rag to wipe off hands.

I have the 8in and 24in and dont regret it either.
For example: 1) An eight inch trench footing or rat wall takes a lot less concrete to fill than a 12in. 2)Also smaller the bucket the more PSI force is put in to the ground for breaking through frost or hard clay. 3) when burying 4in pipe you have 2in on either side which perfectly fits a sledge hammer head for compacting sand during backfill (also the less sand you need to use). 4) The less earth that is disturbed the less that will have to settle and crossing back filled trench with wheeled vehicles creates less of a crush potential.

The 7500 has no problem handling the 24" in 95percent of soils.

The dealer said woods delivers hoe with any sized bucket attached at the same price so I got the biggest they had and the extra 8in was $190 if I remember correctly. This was spring of 2000.

Now if you see yourself burying alot of 12in culvert get the 12 or 16in.

Also look at bradco hoes they seem awesome but dont know about price. ....


Reply to | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo



Advice opinions on woods 7500 pto pump or tractor hyd hookup

View my Photos
TomG
Join Date: Feb 2002
Posts: 5406 Upper Ottawa Valley
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2002-03-28          36802


I'd check the Woods recommendations for minimum system pressure and flow, then see if the tractor hydraulics are within minimum recommendations for the hoe. Of course, tractor specs that are below recommendations like would still work, but hoe wouldn't meet its speed or power specs.

I'd use tractor hydraulics if they produce acceptable performance. A hydraulic hook up isn't too difficult if the tractor has a loader (for safety, hoe equipped tractors have to have loaders). Additional valve assemblies aren't needed if the loader has a power beyond valve. A hook up is just running the power beyond line to the loader and back again plus making a line to splice the PB line together when the hoe isn't mounted. A dealer probably sells kits. However, the hook up should prevent hooking the line backwards because major damage can happen.

You might also want to note the tractor's sump capacity. There's a possibility that a small tractor sump would result in over-heated oil if the hoe were used heavily.
....


Reply to | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo



Advice opinions on woods 7500 pto pump or tractor hyd hookup

View my Photos
RayH
Join Date: Jul 2003
Posts: 4 New Hampshire
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2002-04-18          37597


I have a Woods 9000 and opted for the PTO pump even though I have remotes and my tractor has the capacity to run the hoe. The reason was because I rather keep the hoe's hydraulic system separate from the tractor system. Less heat and deterioration of the tractor's hydraulic fluid which would increase the frequency of tractor hydraulic filter and fluid changes. ....


Reply to | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo



Advice opinions on woods 7500 pto pump or tractor hyd hookup

View my Photos
Doug L
Join Date:
Posts: 1
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2002-04-23          37745


Sean,
I run a Woods 7500 off the remote hydraulics(2000psi @ 5.6gpm)on my JD 855 and it works fine. My biggest problem is the hoe pulling the tractor around. I like having the remotes and it's a cleaner install. The 12" bucket works out great for me, but don't forget that bucket size has alot to do with soil type. Here in my area of CT you can't put a shovel in the ground without hitting a rock, so a larger bucket would actually slow me down. If your soil is soft with few rocks then a larger bucket may be fine. Also if you expect to do alot of trench work the smaller bucket would be better. ....


Reply to | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo



Advice opinions on woods 7500 pto pump or tractor hyd hookup

View my Photos
TomG
Join Date: Feb 2002
Posts: 5406 Upper Ottawa Valley
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2002-04-24          37771


I dig in my loader bucket and jack up the stabilizers to keep my hoe from moving the tractor. However, I doubt my Kelly B600 is as strong a hoe as the Woods, which is just as well since mine is a 3ph mount.

A 12" bucket works well in the sandy soil with lots of tree roots here. A wider bucket that's carrying some soil won't break tree roots as easily as a narrower bucket that’s lighter. A 12" bucket makes about the narrowest trench I can climb into for assembling conduit or leveling trench floors. An operator should be able to dig level trench floors if they’ve got decent technique. I can use some more practice I guess. Of course, anybody entering in a trench or hole should be aware of the possibility of the walls collapsing. For that matter, it’s pretty easy to end up with a tractor and hoe in a hole.

Material comes off the trench walls in very sandy soil and fills up the bottom along the sides. If the trench bottom was filled with sand to meet electrical codes and soil comes off the trench walls, there may be insufficient width of sand bottom across a 9" trench to keep inspectors happy.

Wider trenches also makes it easier to put some bend in electrical conduit rather than resorting to sweeps. Of course, a 16" bucket also would resolve these problems, but a 16" bucket takes more HP, and leaves more material to backfill. Anyway, that's my argument for a 12" bucket.
....


Reply to | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo



Advice opinions on woods 7500 pto pump or tractor hyd hookup

View my Photos
Captain B
Join Date: Feb 2002
Posts: 53 West central New Hampshire
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2002-04-24          37785


Wonderful thread. I'm right in the middle of a decision on these issues. I'm buying a used JD Model 8 backhoe to mount on a JD990. I bought a power beyond hook up for my old JD850. Took it off because the flow was too low to power a splitter. I could use it on the 990. Unfortunately, the Model 8 manual uses the 850/1050 tractor line to illustrate the PB installation. I'm a greenhorn on hydraulics although I got the 850 PB hoses hooked up easily using the kit and the manual. One, is there a basic rule of thumb for connecting all PB hoses or do I need to get Deere or my dealer to do a schematic specific to the 990? Two, Deere later modified the Model 8 hoe and there is now an 8A and 8B. I think they just changed the pressure relief valve settings to give more lift power I presume. Can I have someone readjust the Model 8 relief valves to the Model 8B settings without causing harm or is it not that simple? By the way, I want to use the hoe to remove stumps. Assuming a 16” bucket, how big are the stumps I can realistically expect to dig out?

....


Reply to | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo



Advice opinions on woods 7500 pto pump or tractor hyd hookup

View my Photos
TomG
Join Date: Feb 2002
Posts: 5406 Upper Ottawa Valley
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2002-04-25          37804


First thing is that I imagine that the 990 has a loader on it. It's a safety issue, hoe equipped tractors are supposed to have loaders. Hoes have their own valves and don't actually require an external SCV assembly. They could be run directly from the auxiliary system ports on a manifold block and controlled by the diverter valve. However, such a hook up would not be safe to operate.

Hydraulic hookups are pretty standard for all open centred systems, and almost all compacts have open centred hydraulics. It's just a matter of hooking the hoe valve in series ahead or behind the loader valve. Many loader valves are power beyond types which have two return lines. The PB line (as opposed to the TANK line) runs to the hoe inlet or pressure port. The hoe outlet line back to the loader PB line. The hoes I've seen have only one return line, so connecting the low-pressure return (or TANK line) isn't relevant. However, once connected this way, the hoe valve cannot be removed from the system unless a line is installed that reconnects the loader PB outlet with its PB.

The PB connections for a hoe aren't very complicated, but my hoe connection is even simpler. My loader valve has a 3rd control valve section for a rear valve controlled circuit. I run my hoe from the rear valve controlled circuit by bungee cording the valve open. There are some drawbacks, but it works OK. I do have to be sure I know which hose gets pressure when the valve is held open (in a forward position) because hoe valves and pumps can be damaged by connecting a hoe backwards.

Most any open centred SCV assembly will work provided it is rated for the gmp flow from the pump and had the proper line fittings. However, if it is plumbed into an auxiliary, it probably should be a power beyond rather than a standard valve. Power beyond really means that there is one or more valve assemblies or a 3ph downstream. The second return (TANK) line on a PB valve protects some valve assemblies from high pressures that down-stream valves can develop.

....


Reply to | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo



Advice opinions on woods 7500 pto pump or tractor hyd hookup

View my Photos
william c
Join Date:
Posts: 1
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2002-10-14          43821


I just hooked up a used Woods 7500 to a B2710. I did a lot of research including speaking with all the local dealers. One said use the onboard hydraulics and two told me to use a separate pump kit. I went with the separate pump on the rear PTO. It works great with plenty of power and speed. I purchased all the parts seperate and saved big $$ from buying a pump kit from Kubota. I like the idea of having two isolated systems. ....


Reply to | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo



Advice opinions on woods 7500 pto pump or tractor hyd hookup

View my Photos
jeff r
Join Date: Jul 2003
Posts: 428 burton. michigan
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster  View my Photos  Pics

2002-10-14          43828


William,

What brand of pump did you buy and what were the specifications and resevoir size? I'm curious. I hope you used a subframe.
Jeff R ...Fishreed@aol.com ....


Reply to | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo



Advice opinions on woods 7500 pto pump or tractor hyd hookup

View my Photos
njlwa
Join Date: Jul 2003
Posts: 1 WA
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2002-10-25          44210


I have a 97 Woods 7500 3pt with pto pump in like new cond? what is it worth in Eastern WA also have a AC5050 4x4 50 hp tractor with loader, backhoe is mounted on it. Would like to sell as a package. All in good shape except the loader needs a new 2 spool valve and a few leaks fixed. ....


Reply to | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo



Advice opinions on woods 7500 pto pump or tractor hyd hookup

View my Photos
william c
Join Date:
Posts: 1
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2002-11-22          45295


Jeff R
Its a Prince pump (7 gpm) and a 7 gal reservoir from Northern Tool. Plenty of power and speed. Yep, I have a subframe. ....


Reply to | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo



Advice opinions on woods 7500 pto pump or tractor hyd hookup

View my Photos
TomG
Join Date: Feb 2002
Posts: 5406 Upper Ottawa Valley
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2002-11-23          45304


I'm trying to recall a rule of thumb that relates reservoir size to pump flow. It's buried in the archives under an unlikely subject title.

I think that tractor reservoirs and pumps have about the same capacity in gallons, and my 1710 is no exception. I seem to recall that an ideal pto pump has a reservoir that's is larger than pump flow to accommodate more intensive hydraulic operations such back hoes. The oil over-heats if the reservoir is too small for the load. I run my small hoe from the tractor without heating problems but I have heard a story where hydraulic lines from a PTO pump got too hot to touch, seals failed etc. I think the guy became less aggressive with his hoe operation and that was the cure.

A 7-gmp pump with a 7-gallon reservoir is obviously OK for the loads they're put to if the oil doesn't get hot, but I wish I could recall the rule of thumb. A larger reservoir might be better if extensive hoe work is anticipated.
....


Reply to | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo



Advice opinions on woods 7500 pto pump or tractor hyd hookup

View my Photos
jeff r
Join Date: Jul 2003
Posts: 428 burton. michigan
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster  View my Photos  Pics

2002-11-23          45311


Tom
I think the rule of thump is 1.5 times the size of the pump's gpm. but i think that is high. Most tractor's hydro resevoirs, even with hydro trans missions, are not that big. I wonder how William C got a 7 gallon tank on a Woods 7500, the space is not that big. Or maybe my resevoir is bigger than I think. I will have to measure. ....


Reply to | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo



Advice opinions on woods 7500 pto pump or tractor hyd hookup

View my Photos
Art White
Join Date: Jan 2000
Posts: 6898 Waterville New York
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster  View my Photos  Pics

2002-11-23          45322


You didn't say as to if your tractor has a loader or the make and I feel that it is best to stay with matching components. You also neglected to mention the type of use this machine will be getting. For an average user, homeowner, weekend contractor type use I'd think against the seperate pump for that backhoe. The hydraulic system on that L series is definitely going to be stronger than the pto pump. As far as a bucket for the backhoe I would recommend about 16" for that system to give power and load for maximum versatility. The extra valve will really come in handy for other options later. A totally seperate system is a seperate system to maintain too! More filers and oil to buy and maybe a seal or two. If the unit might be seeing more than 10 hours a week average than look at the extra pump or a better move, look at an L-48. ....


Reply to | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo



Advice opinions on woods 7500 pto pump or tractor hyd hookup

View my Photos
TomG
Join Date: Feb 2002
Posts: 5406 Upper Ottawa Valley
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2002-11-24          45329


A reason for a pto pump that I heard elsewhere (and don't really buy) is that a pto pump is good because it doesn't produce contaminates that go into the sump along with TX components. Maybe there's something to the idea, so I just thought I'd throw it out and see what opinions are around.

I notice that I missed a couple basic question asked by Sean way back in March They are basic concepts and provide a way of thinking about Willian's current question. Maybe everybody is familiar with the ideas but it's good to be clear on them.

First is that pumps don't have power directly. They have flow, and of course it takes more engine power to produce flow at given loads. Flow produces speed while pressure produces power. Max pressures are set by relief valves. Loads produce pressures rather than pumps, and no greater pressure than is necessary to move a load will be produced. Most tractor pumps can withstand far more pressure than are set by relief valves.

So, it's really speed more than breakout forces that might be affected by a different pump. I believe that Sean was right that a PTO pump may deliver more hydraulics than the tractor pump, but that's because most tractors will run a PTO pump with a much higher flow rating that the tractor pump just fine. However, I suppose it is possible to configure a PTO system where a relief valve is set higher than the tractor system's rating to produce more force. From this perspective, I guess that more of the engine's power is available to the PTO than to the tractor pump since a PTO can run a larger pump.

Myself, I don't see a particular reason to use a PTO pump that has a similar flow rating to a tractor's pump and especially if the engine is throttled back when operated from the tractor hydraulics. Throttling back the engine for more comfortable operation indicates that speed from the tractor system already is more than adequate.
....


Reply to | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo



Advice opinions on woods 7500 pto pump or tractor hyd hookup

View my Photos
TomG
Join Date: Feb 2002
Posts: 5406 Upper Ottawa Valley
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2002-11-24          45330


Thanks Jeff--that's generally what I remember. I think my 1710 pump has a slightly greater flow rating than the reservoir size, and I wouldn't be able to compare heat dissipation from TX cases to that of a typical external reservoir. However, the heat thing does depend on the loads worked, and I haven't had a heat problem so my tractor system is OK for my uses. I might change my mind if I tried to run a large hydraulic motor under heavy loads from the tractor. I also don't have HST and I seem to recall hearing about some heat problems with HST's discussed. Many systems probably have external coolers for that reason. ....


Reply to | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo



Advice opinions on woods 7500 pto pump or tractor hyd hookup

View my Photos
Art White
Join Date: Jan 2000
Posts: 6898 Waterville New York
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster  View my Photos  Pics

2002-11-25          45355


The L-series in question has nearly 8gpm dedicated to the hitch and outlets which is nearly 3 gallons per minute more available than the pump supplied to the best of my knowledge. These units are faster than the pto pump and are stronger. The contamination of the oils I don't really see as a problem to the degree that keeps being brought up here on this board. Where does the contamination come from? There are quick disconnects that if cleaned properly when connecting should not cause it so it only leaves potential water contamination from condensation which is the same that the tractor gets anyway. If the tractor has it's oils changed when they are do, than there should be little trouble and the next time you use the hoe it exchanges the fluid in the hoe for you too. There again average those hours out and if the use is not there than go with the tractor system and use the money from the pump to buy a valve for the tractor. By the way the two valve is the bargin here for just a little more. Tom you brought up the increase heat of a hydro, if you are not working the hydro for movement than the heat isn't there if you are not using the transmission it won't build the heat! Besides thats why they make oils like Super UDT to live under that type of condition. ....


Reply to | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo



Advice opinions on woods 7500 pto pump or tractor hyd hookup

View my Photos
TomG
Join Date: Feb 2002
Posts: 5406 Upper Ottawa Valley
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2002-11-25          45361


Yep--I guess the discussion is about backhoes in particular and less about issues in general. It is true that the TX isn't moving the tractor around much when a backhoe is being used. ....


Reply to | Quote Post Reply to PostQuote Reply | Add PhotoAdd Photo


   Go Top


Share This







Member Login