JamesC-120 204 #1 Posted October 12, 2013 How much would it cost to rebuild a c-120 hydro drive? Is it worth rebuilding? How hard is it to rebuild? Thanks Share this post Link to post Share on other sites
daveoman1966 3,841 #2 Posted October 13, 2013 I have rebuilt a number of these...Sundstrand 90-1136, 1137, 1140 etc . You can't just rebuild the pump...that's only 1/2 the system. You also need to rebuild the hyd motor...the section bolted to the gearbox. It has many parts near identical to the pump internals and if one goes bad, so does the other. I have a rebuilt one in my shop at this moment....overhauled it last summer. If you want to pursue this, send me a pm and we'll go from there. I am in n/w PA at zip 16433 1 Share this post Link to post Share on other sites
