Barcokid 0 #1 Posted 18 hours ago I am restoring a 1976 Wheel Horse D250 equipped with an HY-2 hydraulic pump. While the tractor runs and drives—and lifts perfectly when the control rod is pulled back—the hydraulic lift pressure refuses to release when I push the rod forward. Currently, I can only release the pressure manually, either by pressing down directly on the control arm or by removing the cylinder's top bolt cap and pushing the cylinder down. It feels as though the mechanism is misaligned or lacking sufficient downward travel. Does anyone have a diagram of this setup or guidance on what to check? I could probably rig the guide to force more downward pressure, but I prefer to fix it the right way. Thanks in advance for any advice! Share this post Link to post Share on other sites
gwest_ca-(File Mod) 12,463 #2 Posted 16 hours ago Service manual help? Share this post Link to post Share on other sites
Barcokid 0 #3 Posted 6 hours ago Thank you, I did already have this PDF. It seems to focus more on the pump and not so much the control valve. I do appreciate the post and I'll take another pass thru this to see if it helps. The pics are horrible in this file and same for the service manual! Maybe because they are all scans of the original? Take care... Share this post Link to post Share on other sites
Barcokid 0 #4 Posted 3 hours ago The service manual says the cylinder—which they call the shift shaft—can be removed. Unless anyone has a better suggestion, I’m planning to pull it out this weekend to take a look. Stay tuned! Share this post Link to post Share on other sites
