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Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
751 Engine removal
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<blockquote data-quote="Fishfiles" data-source="post: 10317" data-attributes="member: 782"><p>The JIC fitting with a straight pipe thread boss oring is what I think you are calling the orb (oring boss) , don't know what they call them but the Jic fitting with the o-ring in the flare tip has been a nightmare for me , only a few years of machines had them , I think it was a two year span , the o-rings are very expensive and the local seal supply gave up trying to get them for me , the small number 6 (3/8) size is like a $1.60 each from the dealer =--------the one I hate the most are excavators swivels with that fitting , they are a pain to change the swivel hoses , it's hard enough getting some of those hoses out and then you have to be careful to not knock the ring out , to me that was a flawed design , the ORS ( oring seal )is a better set up , have seen those hand tight and not leak under full system pressure , they are easier to get the threads started in tight places , one draw back is they will rust around the ferrel nut and the whole hose wants to turn when the nut is wrenched , what I been doing for those when in really tight spots where you can't spin the hose is to use an air saw or grinder and cut the hole off which makes it easy to unscrew the ferrel nut ,the Catapilliar ORS uses a sealing ring unique to Cat ------a quick story on ORS fittings , I unscewed the ferrel nut completely and it was 3/4" away from the threads , the fitting was stuck together at the flat faces , probally some rust , I couldn't break it off with my hand and took the wrench and hit it twice , the second hit it broke free and soaked me with oil , amazing that it held pressure with no nut , thought me to always loosen the nut then hit the fitting at the hose to make sure all pressure is off</p></blockquote><p></p>
[QUOTE="Fishfiles, post: 10317, member: 782"] The JIC fitting with a straight pipe thread boss oring is what I think you are calling the orb (oring boss) , don't know what they call them but the Jic fitting with the o-ring in the flare tip has been a nightmare for me , only a few years of machines had them , I think it was a two year span , the o-rings are very expensive and the local seal supply gave up trying to get them for me , the small number 6 (3/8) size is like a $1.60 each from the dealer =--------the one I hate the most are excavators swivels with that fitting , they are a pain to change the swivel hoses , it's hard enough getting some of those hoses out and then you have to be careful to not knock the ring out , to me that was a flawed design , the ORS ( oring seal )is a better set up , have seen those hand tight and not leak under full system pressure , they are easier to get the threads started in tight places , one draw back is they will rust around the ferrel nut and the whole hose wants to turn when the nut is wrenched , what I been doing for those when in really tight spots where you can't spin the hose is to use an air saw or grinder and cut the hole off which makes it easy to unscrew the ferrel nut ,the Catapilliar ORS uses a sealing ring unique to Cat ------a quick story on ORS fittings , I unscewed the ferrel nut completely and it was 3/4" away from the threads , the fitting was stuck together at the flat faces , probally some rust , I couldn't break it off with my hand and took the wrench and hit it twice , the second hit it broke free and soaked me with oil , amazing that it held pressure with no nut , thought me to always loosen the nut then hit the fitting at the hose to make sure all pressure is off [/QUOTE]
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751 Engine removal
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