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Paulson conversion costs

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RayPHX

02-20-2003 07:30:11

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Just got back from vacation, so for those who asked about the cost of the conversion...here it is:
third party image

Parts:
Dual Spool controller, PTO pully, flexall and bushings, PTO shaft, Vickers Vane pump (9 gpm) and filter $735
provided by: Jackson Power Steering

2 Dual acting cylinders for Bucket $195
provided by: Northern Tool

2 Dual acting cylinders for lift $250
Replaced the single acting cylinders of Paulson. (highly recommended)
provided by: Northern Tool

Hyd Hoses $410
provided by: S&T Hydraulics, Phx
(Note: don't do this part without some pro help)

5 gallon Reservior Tank $50
provided by: Northern Tool

Fabricated the mounting brackets from scrap material I had laying around.

Results:
Bucket - 10degree rollback angle, 60degree dump angle
Lift - 6 ft
Drop - about 4 inches from ground level

Level of Difficulty: 16 Busted knuckles, 5 minor burns and 1 badly dented credit card

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hoosiersteve

02-23-2003 13:09:59

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Re: Paulson conversion costs in reply to RayPHX, 02-20-2003 07:30:11

The conversion looks great. I have a MF loader I would like to mount on my 8N. I was interested in your hydraulic pump set-up. The pictures don't show the pump. Any info would be appreciated.

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Mountainman

02-20-2003 12:32:25

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Re: Paulson conversion costs in reply to RayPHX, 02-20-2003 07:30:11

Nice looking rig.

I'd be a little concerned about the hose attachment to the side of the reservoir - looks a bit vulnerable to me. Could catch on something unexpectedly.

N - joy.

Mountainman...CA

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RayPHX

02-21-2003 06:22:50

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Re: Re: Paulson conversion costs in reply to Mountainman, 02-20-2003 12:32:25

DickTN & Mountainman:
Excellent tips. The reservoir was a location problem given it's size. The width of the tank is still inside the width of the tires, but your sure right about the possiblity of snagging on something. The only good thing is that those lines are zero pressure. You can't see it, but the in-line filter is under the tank.

The pressure relief valve is incorp into the spool valve body and big time suggestion on the reservior cap. I am going to do something to keep the dust out ! (Arizona is primarily DUST)

That's a 5 gallon tank. My problem was space. And you're right, a 9gmp pump should have a 1 to 3 gallon ratio to the pump rate for cooling. I had no clue where a 9 gallon tank would fit. I am counting on the location of the tank and 1' dia return line having a cooling effect from the engine fan. My hydraulics guy figured the reservior volume for the cylinders would be adaquate.

I love this board. Smart People!!!

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DickTN

02-21-2003 12:28:00

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Re: Re: Re: Paulson conversion costs in reply to RayPHX, 02-21-2003 06:22:50

Ray, I did a little more thinking about your conversion. I looked at a tank that I have and it doesn't look like a real easy conversion to a spin-on filter on the intake. Might be able to find a pipe which would just slip over the existing stub, weld it to the tank and use pipe adapters to get to the filter thread size. Looks like it would be about as easy to dismount the tank, weld a plate over the existing filler with a threaded hole in it to take a pipe nipple of the proper size to accept the spin-on filter.
Concerning your tank size, I'm concerned that your oil will get too hot. This will cause varnishing which is not good for valves, cylinders or the oil. Wonder if a transmission oil cooler such as used on trailer-pulling trucks w/ automatic transmissions would help? This could be mounted in front of radiator so the fan could give you air circulation. I have a small unit on my pick-up. Works well and doesn't cause overheating, even w/ air conditioning on. This would also give you a little more oil capacity. If this looks like an option, be sure to mount the aux. cooler in the return line and below your hydraulic tank level. Good Luck. DickTN

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Dell (WA)

02-21-2003 09:30:56

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Re: Re: Re: Paulson conversion costs in reply to RayPHX, 02-21-2003 06:22:50

Ray..... ...no law sez your hydraulic tank hassta be square. Maybe a custom made 6-12" pipe based tank clamped to your Paulson frame? Remember, the old Dearborn's used their hollow pipe frame for oil reservoir, 'course they didn't have monster hydraulic pump to feed monster cylinders eather. (grin)..... ..... Dell

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DickTN

02-20-2003 12:28:19

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Re: Paulson conversion costs in reply to RayPHX, 02-20-2003 07:30:11

Ray, Neat looking setup. Looks like you did a real nice job. Congratulations! One or two comments. Generally, a hydraulic reservoir should be sized to hold about 1 gallon per gallon of pump displacement for cooling purposes. You do not mention a relief valve in your system, although that may well be incorporated in your valve bank. It would appear that, with the long stroke cylinders that you have, you are going to get a lot of level change in your reservoir as the cylinders stroke. I'm sure you have considered all this, judging by the care you have taken with the installation. One other thought. If you are going to use the loader in dusty conditions, you may wish to change your vented cap on the reservoir to a better filter. As the level changes in the reservoir, air must be expelled or taken in. The taking in can allow dust into the system. I have seen car-type oil filters used for this purpose. Again, congratulations on a really neat installation. DickTN

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Dell (WA)

02-20-2003 08:01:01

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Re: Paulson conversion costs in reply to RayPHX, 02-20-2003 07:30:11

Ray..... ...thanks for sharing your $1640 modification of the modern Paulson Loader for your 8N.

I've always admired the Paulson's physical design, which I think is a great improvement over the junglegym pipe design of the Dearborn. But I never cared for their usage (while clever and works) of the internal N-Hydraulic pump scheme. The N-Pump is a weak sister of about 2 1/2 gpm and 1500 psi which makes for slow hydraulics and weak lifter and gravity dump..... ..Dell

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RayPHX

02-20-2003 08:32:00

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Re: Re: Paulson conversion costs in reply to Dell (WA), 02-20-2003 08:01:01

Don't know if I mentioned this before, but I spoke with the new owner of Paulson Loaders and he was interested in my conversion because they are considering adding an "Option" package to the Lightweight loader for this type of conversion.

If any of you are considering adding a Paulson, call them first about it. They may be ready to offer cylinders, brackets etc. to save you some fabrication, parts hunting and engineering. They are here...Paulson Loaders
Their phone # is listed on the site.
Beside the advantages noted by Dell, you can set a digging angle and "scoop" material with the bucket. The Lightweight loader "as is" isn't worth the $1475 because of the limitations. Then again, "You get what you pay for". All depends on your needs. My total $3200 for a front loader may sound high, but I like to capability and looks of the finished deal.

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