More torque for my Power trac?

[SnowRidge]

Do you guys not have parts manuals for VSP pumps. If you do, it will indicate whether you have relief valves.

As far as I can tell there are no Sauer Danfoss parts manuals available anywhere on the web. I have scoured it looking for one. I can't even find a mention of one--for any of their pumps.

I don't see how they could not publish parts manuals, so I am assuming they are only available to their register dealers, wholesalers, and OEMs.

I don't know about the other brands of tram pumps used in the Power Tracs.

 

[J_J]

As far as I can tell there are no Sauer Danfoss parts manuals available anywhere on the web. I have scoured it looking for one. I can't even find a mention of one--for any of their pumps.

I don't see how they could not publish parts manuals, so I am assuming they are only available to their register dealers, wholesalers, and OEMs.

I don't know about the other brands of tram pumps used in the Power Tracs.

I have already call Danfoss technical dept, and they referred me to the distributors. I believe that if you ask nice at the parts desk, they will supply you with a parts list.

I had the parts guy at PT email me a breakdown of my pump awhile back. They might oblige you also. PT should automatically supply owners and parts manual, with an option to buy the factory service manual if there is one.

 

[SnowRidge]

I have already call Danfoss technical dept, and they referred me to the distributors. I believe that if you ask nice at the parts desk, they will supply you with a parts list.

I had the parts guy at PT email me a breakdown of my pump awhile back. They might oblige you also. PT should automatically supply owners and parts manual, with an option to buy the factory service manual if there is one.

I have discovered that Sauer-Danfoss has a repair manual for the series 15 pumps. Apparently, their service manual really isn't a service manual.

The repair manual appears to incorporate the parts manual. Although the repair manual exists as a PDF, it is not available on line. The PDF is almost 15 MB, so it should be a pretty good sized document. It used to be on the Toro web site, since several of the Toro service manuals incorporate it with reference links in their PDFs. However, it has since been pulled from the Toro web site.

I'm beginning to think Sauer-Danfoss is a company to be avoided. They appear to be deliberately limiting end user customer access to critical maintenance documents.

 

[woodlandfarms]

The documents things to be systemic with PT.. Vendors don't give them, PT doesn't. I did get a nice manual with my Deutz, though. Almost car-ish in its design.

Hey Stray, I would not hold my breath on an emailed response. Seems they have the technology, they just don't know how to use it.

Phone call is the only way to go.

 

[stray]

I have gotten this far guys. as soon as Terry replys i will post it.

Craig,
I have forwarded your message to Terry in Service - he will be getting
back with you soon.
Have a great day!
Kristie Asbury

 

[SnowRidge]

OK, I have found an exploded parts diagram of what appears to be my tram pump in a manual covering the Toro Sand Pro & Infield Pro 3040/5040 line. It shows relief valves mounted in the rear housing. They are not discrete valves, but a series of components that use the housing bores as valve bodies. They are topped by hex caps screws.

Based on what I see in the diagram, I am not going to pull those caps off. I am not in a position to risk the downtime if something goes wrong.

The manual also lists the specs for the pump:

Maximum Pump Displacement 0.913 in3/rev (15.0 cm3/rev)
Maximum Pump Flow Rate (98% efficiency @ 3400 RPM) 13.2 GPM (50.0 LPM)
Charge Pump Gerotor Pump in Hydrostat
Charge Pump Displacement 0.33 in3/rev (5.4 cm3/rev)
Charge Pump Flow Rate (60% efficiency @ 3400 RPM) 2.9 GPM (11.0 LPM)
Charge Relief Setting 135 PSI (9.3 bar)
Implement Relief Setting 1100 PSI (75.9 bar)
Traction Relief Setting 3200 PSI (220.7 bar) in Forward Direction

If those same traction reliefs are in the PT-425 pumps, they may be too high to work in that application. They do not appear to be adjustable.

In the meantime, I have spent way too much time on this. It's Spring, the season to trot out the power equipment and try to break it.

 

[J_J]

Well now, who wants to be the first to look and see if there are relief valves installed. According to the diagram, they are on the rear of the pump, about a third from the top. If you look on the the pages in the PDF , pages 26 of 32, you will see. The question is do all 422's and/or 425's have this pump?

 

[SnowRidge]

Well now, who wants to be the first to look and see if there are relief valves installed. According to the diagram, they are on the rear of the pump, about a third from the top. If you look on the the pages in the PDF , pages 26 of 32, you will see. The question is do all 422's and/or 425's have this pump?

Only the 425s as far as I know.

The pump is rotated on at least some of the 425s. Top is a relative term in this case.

 

[Gravy]

FWIW, My 425 has a B&P pump. I've never heard reliefs operating on it. The engine seems to run out of torque first.

 

[J_J]

FWIW, My 425 has a B&P pump. I've never heard reliefs operating on it. The engine seems to run out of torque first.

Gravy, Do you have the parts manual for your pump?