Mike'sHorseBarn 2,998 #1 Posted June 11, 2022 Dug this out of the guys shed tonight for my final haul. This one is one that I'm keeping as I've always wanted a C-160. Biggest problem is that the transmission is shot and he told me that up front so I have to tear it off and have it rebuilt or find a new rear end. I would have ruined it anyway since the release valve was absolutely seized tight and I had to get it on the trailer so I had to tow it. I think a tractor like this is worth putting the money into. I guess I'll be on the lookout at the big show for hyro rear end options. 3 5 Share this post Link to post Share on other sites
Jeff-C175 7,202 #2 Posted June 11, 2022 Me myself would verify that it really is bad rather than take the po word for it. 5 Share this post Link to post Share on other sites
ebinmaine 67,485 #3 Posted June 11, 2022 9 minutes ago, Jeff-C175 said: verify that it really is bad rather than take the po word for it. Absolutely agreed. Excellent find there Mike !! Looks like a very good start. My own Automatic is a 75. My tow valve is stuck as well. The tractor will move a few inches and stop until the pressure subsides. @daveoman1966 is the auto man. What EXACTLY is "wrong" with it? I've heard of tractors "needing a transmission" because the ignition points were bad. Does it run? 54 minutes ago, Mike'sHorseBarn said: I would have ruined it anyway since the release valve was absolutely seized tight and I had to get it on the trailer so I had to tow it. I'm not so sure that's true on a Sundstrand transmission. Did the rear tires drag or spin? 1 Share this post Link to post Share on other sites
Mike'sHorseBarn 2,998 #4 Posted June 11, 2022 This one doesn't run yet, it was sitting in a shed for 15 years covered in junk until I got it. Previous owner said he bought it from a john deere dealer and brought it home. Once the trans got hot it would quit moving so he parked it and forgot about it. That's why I'm thinking it's actually the trans. 1 Share this post Link to post Share on other sites
daveoman1966 3,751 #5 Posted June 11, 2022 Your comment : "Once the trans got hot it would quit moving" is typical of a Sundstrand that needs rebuild...both the PUMP and the HYD MOTOR. The soft brass internal components (of the pump AND the hyd motor) are scratched or scored and need refinished. When operating temp is reached, oil slips thru these scratches/scorings resulting in loss of oil pressure...leading to loss of power or no motion at all. I have posted here...on RS... a .pdf file instructing what and how to do this rebuild. It is NOT difficult at all...just meticulous care is needed. Here is the file: SUNDSTRAND Piston-Piston PUMP & MOTOR Refurb.pdf 3 4 1 Share this post Link to post Share on other sites
Mike'sHorseBarn 2,998 #6 Posted June 11, 2022 7 hours ago, daveoman1966 said: I have posted here...on RS... a .pdf file instructing what and how to do this rebuild. It is NOT difficult at all...just meticulous care is needed. Here is the file: SUNDSTRAND Piston-Piston PUMP & MOTOR Refurb.pdf 2.6 MB · 4 downloads Thanks! I downloaded this last night and was looking at it. Do you reccomend any particular place for getting the parts? Share this post Link to post Share on other sites
daveoman1966 3,751 #7 Posted June 11, 2022 (edited) Either L J FLUID products : https://l-j-fluid-power.hub.biz/ OR B J HYDRAULICS. https://bjhydraulics.com/ Be sure to specify parts ---Gasket & O-ring Kit---- for a Sundstrand Model 90-1140 (Same as 90-1136, 1137) Edited June 11, 2022 by daveoman1966 1 Share this post Link to post Share on other sites
pfrederi 17,739 #8 Posted June 11, 2022 1 hour ago, Mike'sHorseBarn said: Thanks! I downloaded this last night and was looking at it. Do you reccomend any particular place for getting the parts? Pinned at the top of the transmission page is a listing of most the needed o rings and their commercial dash # s. 1 Share this post Link to post Share on other sites
