Sundstrand Hydro Release Plunger Leaking
Posted July 15, 2015 - 08:58 PM
- Dominicmip said thank you
Posted July 16, 2015 - 07:27 AM
Pull them and soak them overnight, or a couple of days, in WD40. Check for any surface rust or corrosion around the protruding stems. If there is some corrosion, put them in a mix of water/rust dissolver solution, then rinse. Replace the O-rings on each release valve and reinstall. Be sure to save plastic backer rings and reinstall as previous. If you need the sizes and/or part #'s, I should have those written down at home. After reassembly, depress protruding stems and look for smooth rebound. If this tractor sits outside, coat the stubs with anti-seize or put some grease around the stem where it protrudes. O-rings have a life too, but they're relatively inexpensive to get something back to par.
- Billy M said thank you
Posted July 16, 2015 - 11:26 AM
Thanks djordge33. I'll take it out and see what I can do with it. I have plenty of O-rings in my shop. I should have some to fit. The tractor did sit outside for a few years before I got it. That's why they originally were corroded and stuck. I'll probably service both plungers while I'm at it.
Posted July 16, 2015 - 11:36 AM
Those cartridge valves are usually good forever, unless the rear deck was propped up and it spent the last 10 years outside. Then you drop $125 a pop for each.