Farmtrac 665 DTC

   / Farmtrac 665 DTC #1  

I Piddle

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May 31, 2020
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70
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Western Maryland
Tractor
Farmtrac 665 DTC
I bought a 2004 Farmtrac 665. Frequently in a tight spot, the power steering quits working. I haven't figured out where the power steering reservoir is if there is one. Where do I fill the reservoir? And does it require Power Steering fluid or just hydraulic fluid? Thanks for any replies. It seems like a very good tractor otherwise, starts in cold weather without preheater or ether and runs at an idle with just a brief second twist on the key. That part really amazes me at how easy it is to start. It has an escort engine.
 
   / Farmtrac 665 DTC #2  
On a FarmTrac 60 here is the location for power steering fluid; it does take the fluid. If your hydraulic cylinder shaft is wet/damp you need to have the cylinder repacked. I had the same problem you have described.

I once damaged the shaft by running up on a rock outcrop. In that instance I last power steering immediately and had to have the shaft replaced.

If you are like me you will be amazed at how much better having good power steering is.



1642736998006.png
 
   / Farmtrac 665 DTC
  • Thread Starter
#3  
Thanks for the reply. I thought that might be where to add fluid but didn't want to just dump some in there without knowing for sure. My cylinder doesn't leak, but I had a FEL cylinder on another tractor a while back that worked very slow and was very weak. It had an O ring or seal that was letting it backflow inside the barrel. That was a cheap fix. Just took a little time to figure out how to get the cylinder apart. Not much to it after you get one apart. I thought there might be all kinds of pieces in there. Just a few o rings and seals.

Hopefully, I can get this working correctly with a cheap fix.

Thanks again.
 
   / Farmtrac 665 DTC #4  
Wow. Did they build those from old Ford Tractor parts? The similarity is astounding. o_O

New Paint-3.jpg
 
   / Farmtrac 665 DTC
  • Thread Starter
#7  
Yeah, they made the Fords. Then it was branded Farmtrac, Montana, Long, LS. These tractors are made overseas and rebranded. I have an old Long that was made by Zetor and also branded John Deere with some cosmetic changes.
 
   / Farmtrac 665 DTC #8  
Why, because it's a similar color???

SR
Look again. It's not just the color. They are identical except for the alternator cover and external hydraulic pump. Both of which Ford did use but are not on my 1986 Ford. You can even see the cover plate on mine where the pump would be mounted. (Right behind the oil filter.) Even the sheet metal looks the same.
 
   / Farmtrac 665 DTC #9  
I wish Ford still mfg tractors. They were a solid tractor.
I sure like mine. That's why it got a new coat of paint and some additions. (y)
 
   / Farmtrac 665 DTC #10  
I bought a 2004 Farmtrac 665. Frequently in a tight spot, the power steering quits working. I haven't figured out where the power steering reservoir is if there is one. Where do I fill the reservoir? And does it require Power Steering fluid or just hydraulic fluid? Thanks for any replies. It seems like a very good tractor otherwise, starts in cold weather without preheater or ether and runs at an idle with just a brief second twist on the key. That part really amazes me at how easy it is to start. It has an escort engine.

In case you haven't figured it out already, the 665 steering system shares fluid with the transmission/hydraulics which is filled at the back of the tractor. 80W-90 gear oil.
 
   / Farmtrac 665 DTC
  • Thread Starter
#11  
Yeah, thanks for the reply. Wish you had seen this post earlier. It took me quite a long time to figure that out. I was very apprehensive about what oil went in which place. I got an owner's manual but it was still hard to be certain about some things as the photos didn't look like on the tractor. If the photos would have covered a larger area for perspective would have been much better. Such as where to put motor oil in. It looked more like a place to put steering fluid in or lubrication for the injectors. So when I changed the oil I removed the breather off the valve cover and dumped the oil in there. At least I knew it would get to the crankcase. It still doesn't look like a place to install motor oil as it has a screen under the cap, but that is what it is. I haven't put any oil in it yet as the oil level has been okay since the oil change.

By the way, do you happen to have a loader that the hydraulics for the front-end loader is connected to the rear remotes? For some reason to get the controls on the loader to work, I have to connect the hoses to the two and four ports, instead of the one and two ports. I have dual remotes. Where the one and three ports are on top and the two and four are the bottom ports. As it is connected I am connected to different remotes. The hoses should be connect to just one remote. Either to the one and two ports on the first remote or to the three and four ports on the second remote. It has me baffled, but as usual, there is some reason beyond my comprehension.
 
   / Farmtrac 665 DTC #12  
Sorry, I don't get on the forum much.

No, I don't have a loader on mine. I actually have never used my auxiliary rear remotes with any attachment. Do you have the double acting joystick behind the seat? I assume you do since you have 4 ports. I think the two upper ports are together and the bottom two ports are together, but that's about all I know.
 
   / Farmtrac 665 DTC #13  
before u reply i have all the manuals from the dealer and brochure papers from the day we got are o6 665dtc. known the dealer all my life. Do not put any 80-90 in a farmtrac transmission. they use standard hydrolic fluid in the trans. were using the black premium bucket from tsc. only thing that gets 80-90gear oil is the 4wd front axel and the front hubs. u can pull the screen out were the engine oil is spose to be pored in. curently over 1800 hrs on ares so far. every 2 year fuel tank needs flushed out. plugs with rust and dust. are loader was factory mounted
 
   / Farmtrac 665 DTC #14  
yes the top 2 ports in the outlet go together. same with the bottom set. we put fluid in the back tires and 3 set of wheights. is scary what u can push or lift. 36 bags of 60 pnd bags of concrete. if u put 3 bottom plows on picks up more but u cant tillt the pallet forks.
IMG_20250402_095642.jpg
 
   / Farmtrac 665 DTC #15  
before u reply i have all the manuals from the dealer and brochure papers from the day we got are o6 665dtc. known the dealer all my life. Do not put any 80-90 in a farmtrac transmission. they use standard hydrolic fluid in the trans. were using the black premium bucket from tsc. only thing that gets 80-90gear oil is the 4wd front axel and the front hubs. u can pull the screen out were the engine oil is spose to be pored in. curently over 1800 hrs on ares so far. every 2 year fuel tank needs flushed out. plugs with rust and dust. are loader was factory mounted
I would be interested in seeing the snippet from the manual. You'd know better than me. I don't have an OM.

But I do have the service manual and for the ft-70 it recommends 80W90 for the transmission/steering.
For what it's worth, I've been using the heavier oil in mine for 15 years with no issues.
 
   / Farmtrac 665 DTC
  • Thread Starter
#16  
I have a Farmtrac 665 DTC 4x4 I use 80w90. Here is what I found on the net. I also have a manual that specifies 80x90. As soon as I find my manual, I will send you a PDF copy.


For a Farmtrac 665 DTC, you'll need to consider engine oil, transmission/hydraulic oil, and potentially other fluids. Engine oil should be 15W-40 or 10W-30. For the transmission and hydraulic system, use a multi-purpose 80w/90 GL4 or GL5 limited slip oil, or a UTTO tractor transmission fluid. Additionally, you may need a specific tractor transmission fluid, or a universal trans-hydraulic fluid meeting the tractor manufacturer's specifications.

Here's a more detailed breakdown:

1. Engine Oil:
  • Recommended Viscosity: 15W-40 or 10W-30.

  • Considerations: Multigrade oils (like 15W-40) are designed to perform across a range of temperatures.
2. Transmission/Hydraulic Oil:
  • UTTO Tractor Transmission Fluid: Viscosity 147, for hydro/trans.

  • Multi-Purpose Oil: 80w/90 GL4 or GL5 (limited slip).

  • Considerations: Tractor transmission fluid lubricates moving parts and hydraulic oil transfers power. Ensure the chosen fluid meets your tractor's specific requirements.

  • Universal Trans-Hydraulic Fluid: A good option if it meets the Farmtrac 665 DTC's specifications, according to Blain's Farm & Fleet.
3. Other Fluids:
 

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