Do you still have that manual? I am going to install on on my 1200, it does not really look to bad to do. I would love to have a look at that manual!
Posts by Ragnian
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Do you still have that manual? I am going to install on on my 1200, it does not really look to bad to do. I would love to have a look at that manual!
Trev, interesting...the manual even calls out using a plow and says max speed plowing is 25km/hr. I am going to use it for snow-blowing anyway which it should be really good at as you said.
The hydraulic pump and motor do not look that big compared to the size of the truck, say vs the hydrostat in my 30hp tractor or my 110hp forklift. Yet the manual also mentions a front loader with the hydrostat.
There is a temp sensor that must be respected (a light comes on when the oil is 90C), I wonder if the fellow with the U2100 has a bad temp sensor and is overheating them. Really seems strange that he is having that issue.
The hydraulic pump and motor do not look that big compared to the size of the truck, say vs the hydrostat in my 30hp tractor or my 110hp forklift. Yet the manual also mentions a front loader with the hydrostat.
There is a temp sensor that must be respected (a light comes on when the oil is 90C), I wonder if the fellow with the U2100 has a bad temp sensor and is overheating them. Really seems strange that he is having that issue.
I agree, 90C seems high it is what the owners manual says, I will look a the repair manual and see if it is different.
Pump and motor sizes are different like you were thinking, it looks like everything else is the same. In other words putting the bigger pump/motor just adds weight and cost but from a fitment perspective it looks the same to me so far.
Pump and motor sizes are different like you were thinking, it looks like everything else is the same. In other words putting the bigger pump/motor just adds weight and cost but from a fitment perspective it looks the same to me so far.
Trev and Ben got me thinking, thanks gents. As a result of your questions and concerns I think I have a better understanding of the limits of this system.
I converted the specs in the manual to GPM and PSI so I could better understand what I am looking at:
The pressures are the same for both versions of the hydrostat I have in my manual, the small hydrostat goes in the U1000, U1200, U1250 and U1250L the larger hysdrostat goes in the U1300 and U1500. I am sure there are other versions but those are the only ones listed in my maintenance manual.
The pressures are: (same for both units)
Max: 7100psi
Max operating: 6100psi
Working: 3620psi
The smaller hydrostat fluid flows are:
Pump 40GPM at 3000RPM [email protected] max flow rate
Motor “absorption volume” 53GPM at 4000RPM [email protected] max flow rate
The larger hydrostat fluid flows are:
Pump 56GPM at 3000RPM [email protected] max flow rate
Motor “absorption volume” 73GPM at 3700RPM [email protected] max flow rate
The 90C temp sensor is in the bottom of the reservoir, I think I will add a gauge to mine. To your point Ben that just seems crazy hot, the fluid called for is SAE HLP/HLP D46. The Mobil version of that oil is 250$ for 5 gallons…and has a max operating temperature of 150C. Maybe I should run the oil cooler into the cab for winter ops…. 😊 …I would roast myself out of the cab….
I am pretty sure I am getting is the larger one, since I have a U1200 the smaller one would work as well. The unit I am getting was listed as being able to go into any truck from U1000 to U2400, I will verify but that should mean it is the heavier duty unit. I need to know what it came out of specifically anyway in case I need any parts later.
Trev, I am very interested to know what component is failing on the unit you mentioned, pump, motor or something else.
I am not installing this thing until the spring so I have lots of time to get smart on it.
I converted the specs in the manual to GPM and PSI so I could better understand what I am looking at:
The pressures are the same for both versions of the hydrostat I have in my manual, the small hydrostat goes in the U1000, U1200, U1250 and U1250L the larger hysdrostat goes in the U1300 and U1500. I am sure there are other versions but those are the only ones listed in my maintenance manual.
The pressures are: (same for both units)
Max: 7100psi
Max operating: 6100psi
Working: 3620psi
The smaller hydrostat fluid flows are:
Pump 40GPM at 3000RPM [email protected] max flow rate
Motor “absorption volume” 53GPM at 4000RPM [email protected] max flow rate
The larger hydrostat fluid flows are:
Pump 56GPM at 3000RPM [email protected] max flow rate
Motor “absorption volume” 73GPM at 3700RPM [email protected] max flow rate
The 90C temp sensor is in the bottom of the reservoir, I think I will add a gauge to mine. To your point Ben that just seems crazy hot, the fluid called for is SAE HLP/HLP D46. The Mobil version of that oil is 250$ for 5 gallons…and has a max operating temperature of 150C. Maybe I should run the oil cooler into the cab for winter ops…. 😊 …I would roast myself out of the cab….
I am pretty sure I am getting is the larger one, since I have a U1200 the smaller one would work as well. The unit I am getting was listed as being able to go into any truck from U1000 to U2400, I will verify but that should mean it is the heavier duty unit. I need to know what it came out of specifically anyway in case I need any parts later.
Trev, I am very interested to know what component is failing on the unit you mentioned, pump, motor or something else.
I am not installing this thing until the spring so I have lots of time to get smart on it.
Talking with MEREX and Schussler I have learned a few more bits of information.
The experience in Germany is that these units are very reliable, they are not super common and the electronics are the hardest parts to come by, pumps and motors are around here and there.
The unit I am getting is out of a U1600 and has been completely rebuilt including transmission with working and crawler gears. MB installed the smaller unit in the U1600s even thought they have a higher HP than the U1300 which specs the bigger motor and pump.
Also interesting, at least to me, is that the only difference between the units is the pump and motor, so you could swap those parts out if you needed to. I don't think that would be necessary, but I suppose if I were to have issues with the output of the unit I am getting I could look into that as an option.
The transmission should be here middle of January, I need the truck to be up and running until the snow is gone so I won't be doing the swap until the spring...lots of time to really get to understand everything and perhaps install some of the ancillary equipment related to the hydrostat first.
The experience in Germany is that these units are very reliable, they are not super common and the electronics are the hardest parts to come by, pumps and motors are around here and there.
The unit I am getting is out of a U1600 and has been completely rebuilt including transmission with working and crawler gears. MB installed the smaller unit in the U1600s even thought they have a higher HP than the U1300 which specs the bigger motor and pump.
Also interesting, at least to me, is that the only difference between the units is the pump and motor, so you could swap those parts out if you needed to. I don't think that would be necessary, but I suppose if I were to have issues with the output of the unit I am getting I could look into that as an option.
The transmission should be here middle of January, I need the truck to be up and running until the snow is gone so I won't be doing the swap until the spring...lots of time to really get to understand everything and perhaps install some of the ancillary equipment related to the hydrostat first.
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