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Bobcat Skidsteer Forums
General Bobcat Skidsteer Forum
New member with 1995 853
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<blockquote data-quote="wateka" data-source="post: 133074" data-attributes="member: 21519"><p>O-ring TLDR: </p><p>use the backup o-rings. Don't double o-ring it. Details below.</p><p></p><p>Hydraulic tank sock filter: </p><p>order a new one or find a washer/machine bushing with an ID that will fit the sock and an OD that will keep it from falling into the tank but allow the fill cap to screw on, and solder the sock to the washer. </p><p></p><p>The groove: if you are referring to that triangular shaped raw metal in your picture, is likely from the neutral return spring rubbing against the housing. </p><p></p><p>The servo spool fix kit you mentioned is what I think is a replacement control sleeve and, if so, is covered in the below attached Service Letter dated 12/14/1995.</p><p></p><p>O-ring details:</p><p>I'm not an engineer, but I did just rebuild my entire 853 hydraulic and hydrostatic system and replaced every o-ring and backup o-ring in there. Part of my learning curve required reading about o-rings to make sure I was ordering the correct size (the "dash number") and material. After learning the function of the backup o-ring, it makes perfect sense as to why they are included, and how the double o-ring idea is not going to achieve the same outcome.</p><p></p><p>More details at the link and a PDF (of the same link) below:</p><p></p><p>[URL unfurl="true"]https://www.globaloring.com/backup-rings/[/URL]</p><p></p><p>[ATTACH=full]5693[/ATTACH]</p><p>[ATTACH=full]5694[/ATTACH]</p></blockquote><p></p>
[QUOTE="wateka, post: 133074, member: 21519"] O-ring TLDR: use the backup o-rings. Don’t double o-ring it. Details below. Hydraulic tank sock filter: order a new one or find a washer/machine bushing with an ID that will fit the sock and an OD that will keep it from falling into the tank but allow the fill cap to screw on, and solder the sock to the washer. The groove: if you are referring to that triangular shaped raw metal in your picture, is likely from the neutral return spring rubbing against the housing. The servo spool fix kit you mentioned is what I think is a replacement control sleeve and, if so, is covered in the below attached Service Letter dated 12/14/1995. O-ring details: I’m not an engineer, but I did just rebuild my entire 853 hydraulic and hydrostatic system and replaced every o-ring and backup o-ring in there. Part of my learning curve required reading about o-rings to make sure I was ordering the correct size (the “dash number”) and material. After learning the function of the backup o-ring, it makes perfect sense as to why they are included, and how the double o-ring idea is not going to achieve the same outcome. More details at the link and a PDF (of the same link) below: [URL unfurl="true"]https://www.globaloring.com/backup-rings/[/URL] [ATTACH type="full"]5693[/ATTACH] [ATTACH type="full"]5694[/ATTACH] [/QUOTE]
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General Bobcat Skidsteer Forum
New member with 1995 853
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