Fluid question

[presnewt]

Is hydraulic fluid and hydrostatic fluid the same thing? I had to order some hydraulic fluid for my Steiner 440 and the label says "formulated for hydrostatic systems". I was under the belief that the hydrostatic drive system is separate and different from the hydraulic lift system. Please educate me. Thanks.

 

[zmountaineer]

This is the only thing that goes in the ventrac. States on the label used for hydraulic and hydrostatic. At least in the ventrac (not sure about Steiner) it all gets used from the same reservoirs. Rear transaxle is separated from the front.

 

[TNMark1]

Our local dealer didn't stock oil.....

I did a lot of searching (assuming Ventrac doesn't have their own refinery).... I use Amsoil

AMSOIL Synthetic Tractor Hydraulic/Transmission Oil SAE 5W-3

It goes on sale... You don't need much, but have about 2 quarts on hand is plenty unless something breaks...

Mark

 

[prs]

I suspect TN on the right track. My guess is that Ventrac has made a business deal whereby Ventrac oils are re-branded Amsoil. TN, that dealership has changed hands, maybe they stock Ventrac oils now

After warranty, I would not be one worried about using either John Deere's HyGuard or even Kubota's top end similar product. For sure, it would be good to find the original source and model numbers for the two hydraulic filters.

prs

 

[John Joseph McVeigh]

According to the Parts List for the Model HB580 Power Broom, the 25-Micron filter (Ventrac No. 21.0001) on the Power Broom is Zinga No. AE25, which cross references to the Donaldson P551553.

The R05 Parts List for my Model 4500Y Tractor describes the 25-Micron filter (Ventrac No. 21.0122) as, "SYN," which I take to mean that it has a Synteq Synthetic filter medium. Donaldson employs the Synteq medium in some of its spin-on filters.

A quick look at the Donaldson Hydraulic Filtration Product Guide shows that the Donaldson No. P560694 has a ﾟ(x(c)) rating of 23 ｵm and a Synteq filtration medium. However, I do not know if it is an appropriate candidate, as it is rated at a maximum working pressure of 150 PSI. This filter appears on numbered page 32 (page 36 of 320)

The R05 Parts List for my Model 4500Y Tractor describes the 10-Micron filter (Ventrac No. 21.0124) as "CEL," which I take to mean that it has a cellulose filter medium. So far, I have not found an exact replacement for the 10-Micron filter. Also appearing on numbered page 32 of the Donaldson Guide is No. P560693, which is about two inches taller than the Ventrac No. 21.0124, which has a ﾟ(x(c)) rating of 11 ｵm, and which has a Synteq filtration medium. Also appearing on numbered page 32 is No. P565062, which is also about two inches taller than the Ventrac No. 21.0124, which has a ﾟ(x(c)) rating of 10 ｵm, and which has a water-absorbing filtration medium. It looks like there is sufficient clearance on the Model 4500Y to accommodate a filter that is 5.35 inches (136 mm) tall like the No. P560693 or the No. P565062.

I note that, in another thread, which concerns a Steiner No. 21-093 filter, Raw Dodge stated:

[....] The stock steiner filter is a 10 micron...it is a good filter but it's not necessarily the best micron rating. The 10 micron is more restrictive especially in cooler weather, since the pump sucks thru the filter it's very important.The 25 micron filter is less restrictive on the hydraulic pump, and will improve performance and reduce noise slightly. Also 25 microns is what Sunstrand recommends ..So I recommend an aftermarket filter with a 25 micron rating..the only time I use the 10 is right after the system has been open, I would run it a week and switch to a 25.We use Zinga filters.My Ventrac/Steiner dealer is who told me about this many years ago...We use an AE25, it's about 7 bucks...

I assume that by "not the best micron rating" RD means that the more stringent filter medium has a negative effect on the flow rate through the filter. However, I wonder if using a 25-Micron filter in place of the recommended 10-Micron filter would result in increased wear of internal hydraulic components due to the greater number of sub-25-Micron particles that would circulate in the hydraulic fluid because the filter medium would not trap them. I really do not know one way or the other.

 

[prs]

Thank you! Business being what it is, I might speculate that Verntrac would purchase all of their hdraulic filters from same supplier; with seems to be Zinga. Maybe Raw Dodge has some insight regarding fitment of different brands of these filters upon the filter bases. Are there dozens of different base designgs or is more standardized such that getting the micron rating and pressure rating and medial type/quantity is all that is needed?

prs

 

[John Joseph McVeigh]

Thank you! Business being what it is, I might speculate that Verntrac would purchase all of their hdraulic filters from same supplier; with seems to be Zinga. Maybe Raw Dodge has some insight regarding fitment of different brands of these filters upon the filter bases. Are there dozens of different base designgs or is more standardized such that getting the micron rating and pressure rating and medial type/quantity is all that is needed?

prs

You are most welcome.

I suspect that you are correct. I further suspect that we would find that the 10-Micron filter is the AE10S and that the 25-Micron filter is the ZAE-25, the latter with the optional FG03Q Fluorocarbon Gasket.

Geometric compatibility is important, of course. As I see it, the major geometric parameters are the inner and outer diameters of the gasket, and the size and pitch of the mounting thread. These filter appear to have mounting holes that have 1"-12 UN threads. I believe that a taller filter can be used, all other things being equal, if there is sufficient clearance.

As I further see it, the important operational parameters are the Beta rating in Microns and the rated Maximum Operational Pressure.

Please note: in my previous post, I tried to insert the symbol for the Greek capital letter Beta, but the listserve has rendered it as ﾟ... Aa least that is the way that it appears on this computer.

 

[John Joseph McVeigh]

P.S. It appears that, although Zinga does sell some filters factory-direct, certain ones, such as the AE25, are sold in minimum quantities of 12. For this reason, purchasing Zinga filters for our Ventracs and their attachments from a distributor would likely make more sense for most of us.