AHS 1,443 #1 Posted November 16 Hello there, new to me C120. Im planning on using it for plow duties this winter! I have got the cylinder rebuilt by wheelhorsepartsandmore, and got 101422 and 101423 hoses for the hydro lift. I messed up the o rings on one of them! What o rings go on them? Can i just get them at a regular store? Im curious! Thanks! Share this post Link to post Share on other sites
953 nut 55,734 #2 Posted November 16 (edited) You should be able to match them up at ACE or any other good hardware store. The proper amount of torque applied to these "O" Ring fittings is very important. Your fittings are ORB. JIC ORB Size SAE Thread Torque Size SAE Thread Torque 4 7/16-20 140 In/Lb 4 7/16-20 220 In/Lb 5 ½-20 180 In/Lb 5 ½-20 260 In/Lb 6 9/16-18 250 In/Lb 6 9/16-18 320 In/Lb 8 ¾-16 550 In/Lb 8 3/4 -16 560 In/Lb Edited November 16 by 953 nut 2 Share this post Link to post Share on other sites
AHS 1,443 #3 Posted November 16 @953 nut 560 in/lbs / 12 = ft/lbs? Math is stumpin me! Share this post Link to post Share on other sites
AHS 1,443 #4 Posted November 16 Hold on, 11/16’ wrench (open end) is all be able to get on there. Hmmm. Share this post Link to post Share on other sites
953 nut 55,734 #5 Posted November 16 We aren't talking about wrench size here, we are talking about bolt thread size. A common 7/16-20 bolt will have a 1/2" hex head that the wrench goes onto. Here you go, just plug in your numbers and it will tell you what you need to know. I don't think any fittings on a Wheel Horse are 3/4-16 thread but if they were then would be about 47 foot pounds of torque. https://www.thecalculatorsite.com/conversions/common/inch-pounds-foot-pounds.php 2 Share this post Link to post Share on other sites
Handy Don 12,436 #6 Posted November 16 (edited) 2 hours ago, AHS said: What o rings go on them? I’m not sure I’d count on hardware store o-rings for the ORB fittings. ORBs typically need a high-durometer Buna rubber. Try this place. I’ve bought fittings from them but never just the rings. Edited November 16 by Handy Don Share this post Link to post Share on other sites
ri702bill 8,479 #7 Posted November 16 3 hours ago, AHS said: What o rings go on them? Can i just get them at a regular store? Im curious! Thanks! Regular Buna-n may not be compatible with hot hydraulic fluid. Perhaps either Viton or HNBR may be a better choice. Share this post Link to post Share on other sites
oliver2-44 9,847 #8 Posted November 16 Just take it to a Hydraulic shop. hey have drawers and drawers of O-rings, it what they do every day. 5 Share this post Link to post Share on other sites
pfrederi 17,856 #9 Posted November 16 SAE ORB #5 use Dash # 905 O rings SAE ORB #6 use Dash # 906 O rings. When you figure which ones you need PM me your address i will send you a couple 1 1 Share this post Link to post Share on other sites
ebinmaine 68,205 #10 Posted November 16 34 minutes ago, oliver2-44 said: Hydraulic @AHS You'll likely be able to get the correct fittings at a place that makes hoses for loggers or other equipment up there. Take the numbers above and show them. Share this post Link to post Share on other sites
pfrederi 17,856 #11 Posted November 16 26 minutes ago, ebinmaine said: @AHS You'll likely be able to get the correct fittings at a place that makes hoses for loggers or other equipment up there. Take the numbers above and show them. As far a the fittings themselves you are correct if they are SAE ORB#6...the # 5 are much harder to find... 2 Share this post Link to post Share on other sites
ebinmaine 68,205 #12 Posted November 16 2 hours ago, pfrederi said: As far a the fittings themselves you are correct if they are SAE ORB#6...the # 5 are much harder to find... Quite true. The shop I went to down here hadn't seen the size 5 in a looooong time. 1 Share this post Link to post Share on other sites
AHS 1,443 #13 Posted November 16 On 11/10/2024 at 8:06 AM, lynnmor said: And then decide to never buy or accept a free Onan again that was left in the weather. 9 hours ago, 953 nut said: We aren't talking about wrench size here, we are talking about bolt thread size. A common 7/16-20 bolt will have a 1/2" hex head that the wrench goes onto. Here you go, just plug in your numbers and it will tell you what you need to know. I don't think any fittings on a Wheel Horse are 3/4-16 thread but if they were then would be about 47 foot pounds of torque. https://www.thecalculatorsite.com/conversions/common/inch-pounds-foot-pounds.php Duh! It is bigger than 1/4 20. I think 9/16. I will have to look! Share this post Link to post Share on other sites
AHS 1,443 #14 Posted November 16 3 hours ago, ebinmaine said: Quite true. The shop I went to down here hadn't seen the size 5 in a looooong time. I have a shop in bangor that might be the ticket!😀 Thank guys! 1 Share this post Link to post Share on other sites
