{"title":"PSS Type B Shaft Seal — Installation Instructions","description":"\u003clink rel=\"stylesheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/om-manual-v2.css\"\u003e\u003cstyle\u003e.mpom .om-tbl.nw td+td{white-space:nowrap}.mpom details.om-dd{position:relative;margin:0}.mpom details.om-dd\u003esummary{list-style:none;cursor:pointer}.mpom details.om-dd\u003esummary::-webkit-details-marker{display:none}.mpom .om-dd-menu{position:absolute;left:0;top:calc(100% + 6px);min-width:100%;width:max-content;max-width:360px;background:#fff;border:1px solid #e3e5e8;border-radius:6px;box-shadow:0 8px 24px rgba(0,0,0,.14);z-index:30;padding:6px}.mpom .om-dd-menu a{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:10px 12px;border-radius:4px;font-size:14px;font-weight:600;color:#2a2b2a!important;text-decoration:none!important}.mpom .om-dd-menu a:hover{background:#f5f6f8}.mpom .om-dd-menu small{font-weight:400;color:#5f6368;white-space:nowrap}\u003c\/style\u003e\u003cdiv class=\"mpom\"\u003e\n\u003cdiv class=\"om-head\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"om-tag\"\u003eINSTALLATION MANUAL\u003c\/span\u003e\u003cp class=\"om-lead\"\u003eInstalling the PSS Type B shaft seal on 4\" to 6\" (100mm to 150mm) shafts: component list, step-by-step installation and bellows compression, water supply, break-in, troubleshooting and inspection intervals.\u003c\/p\u003e\n\u003cdiv class=\"om-box\"\u003e\n\u003cdiv class=\"om-row\"\u003e\n\u003cspan\u003eDocument\u003c\/span\u003e\u003cb\u003ePSS Type B Shaft Seal Installation Instructions\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-row\"\u003e\n\u003cspan\u003eFormat\u003c\/span\u003e\u003cb\u003ePDF · 8 pages · 0.7 MB\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-row\" style=\"border-bottom:0\"\u003e\n\u003cspan\u003eLanguage\u003c\/span\u003e\u003cb\u003eEnglish\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-acts\"\u003e\u003ca class=\"om-btn dl\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/PSS-Type-B-Shaft-Seal-Installation-Instructions.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M12 4v11\"\u003e\u003c\/path\u003e\u003cpath d=\"m7 10 5 5 5-5\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 20h14\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Download PDF\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-toc\"\u003e\n\u003ca href=\"#om-warnings\"\u003eWarnings\u003c\/a\u003e\u003ca href=\"#om-parts\"\u003eComponents\u003c\/a\u003e\u003ca href=\"#om-install\"\u003eInstallation\u003c\/a\u003e\u003ca href=\"#om-breakin\"\u003eBreak-in \u0026amp; Troubleshooting\u003c\/a\u003e\u003ca href=\"#om-maint\"\u003eInspection\u003c\/a\u003e\u003ca href=\"#om-products\"\u003eProducts\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-img\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/PSS-Type-B-Shaft-Seal-Installation-Instructions-Cover.png\" alt=\"PSS Type B Shaft Seal — Installation Instructions\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-warnings\"\u003e\n\u003ch2 class=\"om-h\"\u003eBefore You Start\u003c\/h2\u003e\n\u003cp class=\"om-note\"\u003eThe PSS (Packless Sealing System) is a through-hull fitting. It must be installed by a qualified professional with the boat out of the water.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIf the transmission is removed, or the boat is launched without one, secure the shaft so the PSS stays in its normal compressed mode.\u003c\/li\u003e\n\u003cli\u003eNo oil, grease (petroleum products) or silicone products at any time during installation; lubricate the rotor o-rings with soap and water.\u003c\/li\u003e\n\u003cli\u003eKeep the seal area clean and do not damage or scratch the carbon face or the stainless steel rotor face while unpacking, handling or installing.\u003c\/li\u003e\n\u003cli\u003eDo not over-tighten hose barb fittings; do not use sealant on the bellow-to-stern tube joint or on hose-to-hose barb joints.\u003c\/li\u003e\n\u003cli\u003eDo not slide the aft bellow cuff too far over the stern tube: its leading edge can damage the inner ribs and limit bellow travel.\u003c\/li\u003e\n\u003cli\u003eVent line (boats under 12 knots): no loop at the top end of the hose, which could promote a siphon.\u003c\/li\u003e\n\u003cli\u003eThe shaft should be near centred and run parallel to the shaft log. Do not run the seal dry. Not for submarine vehicles.\u003c\/li\u003e\n\u003cli\u003eKeep petroleum-based liquids and corrosive materials away from the PSS (e.g. during maintenance or winterizing). No ozone generators aboard; sulfuric acid vapours from non-sealed batteries also speed up bellow deterioration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-parts\"\u003e\n\u003ch2 class=\"om-h\"\u003eType B Component List\u003c\/h2\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/PSS-Type-B-Shaft-Seal-Parts-Drawing.png\" alt=\"PSS Type B shaft seal component drawing, items 1 to 9\" style=\"width:100%;height:auto;border:1px solid #e3e5e8;border-radius:6px;margin:0\" loading=\"lazy\"\u003e\u003c\/p\u003e\n\u003cdiv class=\"om-tbl nw\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eNo.\u003c\/th\u003e\n\u003cth\u003eComponent\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003eClamp collar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003eRotor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003eNitrile o-rings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003eSet screws\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003eHose barb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003eCarbon stator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e7\u003c\/td\u003e\n\u003ctd\u003eClamps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003ctd\u003eSteel hoops\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e9\u003c\/td\u003e\n\u003ctd\u003eBellow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-install\"\u003e\n\u003ch2 class=\"om-h\"\u003eInstallation Instructions\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eUnbolt the shaft coupling from the transmission coupling.\u003c\/li\u003e\n\u003cli\u003eRemove the shaft coupling from the shaft.\u003c\/li\u003e\n\u003cli\u003eRemove the old stuffing box and all attached fittings. Attachments vary on these large shafts: confirm the PSS requirement at the stern tube end with your PSS dealer beforehand.\u003c\/li\u003e\n\u003cli\u003eClean the shaft with very fine sand paper or emery paper (400 to 600 grit), especially the keyway, so no burr or sharp edge can tear the o-rings.\u003c\/li\u003e\n\u003cli\u003eSlide the open end of the bellow and two hose clamps over the shaft log. The carbon flange comes attached to the bellow by 2 T-bolt clamps.\u003c\/li\u003e\n\u003cli\u003eSlide the stainless steel rotor onto the shaft using only a water-soluble lubricant such as dish soap (no grease or oil). Check the o-rings sit in the rotor grooves (spare o-rings are provided) and that the locking clamp collar is not tightened to the rotor.\u003c\/li\u003e\n\u003cli\u003eRe-attach the shaft to the coupling and the coupling to the engine per the manufacturer's recommendations.\u003c\/li\u003e\n\u003cli\u003ePosition the bellow on the stern tube with the carbon centred on the shaft. The forward end of the stern tube must not extend beyond the aft cuff of the bellow. Clamp the cuff with the two stainless steel T-bolt hose clamps.\u003c\/li\u003e\n\u003cli\u003eSlide the rotor (side with drilled holes towards the engine) until it just touches the carbon flange, and mark this \"no load\" position on the shaft just in front of the rotor.\u003c\/li\u003e\n\u003cli\u003eSlide the rotor further to compress the bellow 1\" from the no load mark. The bellows are stiff and a special tool may be needed, but it must never touch the seal faces. Bolts (3\/8\" x 16) threaded into the holes on the rotor O.D. make a handle. If the rotor slides back, use the provided set screw in the one hole tapped through to the bore to hold it while fitting the clamp, then back it off once the clamp screws are snug.\u003c\/li\u003e\n\u003cli\u003eAlign the drilled and tapped holes of the clamp assembly with the holes in the face of the rotor.\u003c\/li\u003e\n\u003cli\u003eFit the clamp assembly to the shaft in front of the rotor with the driver screws engaged in the rotor face holes, and secure it.\u003c\/li\u003e\n\u003cli\u003eCheck the rotor runs true with a dial indicator: .002\" is acceptable. Correct with the locking assembly and a mallet.\u003c\/li\u003e\n\u003cli\u003ePlumb water to the two hose barb fittings to cool and lubricate the seal: this flow is required, from the engine raw water system, a pump or a scoop, at a maximum of 10 PSI. With a shaft bearing in the stern tube limiting water exhaust, the second barb may be vented overboard; on twin screws without a stern tube bearing it can serve as a jumper between engines. Follow the rules of underwater plumbing.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp class=\"om-note\"\u003eCompression: 1\" is an average load and may vary with motor mounts and shaft misalignment; up to 1½\" can be applied if necessary.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block om-grid2\" id=\"om-breakin\"\u003e\n\u003cdiv\u003e\n\u003ch2 class=\"om-h\"\u003eBreak-in\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThe carbon flange polishes the mating face of the rotor: on average about one (1) hour of running.\u003c\/li\u003e\n\u003cli\u003eExpect a very fine mist, sometimes with black dust, at high RPM, and possibly a few drops of water.\u003c\/li\u003e\n\u003cli\u003eThe period varies with each installation but should not exceed 100 hours.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch2 class=\"om-h\"\u003eTroubleshooting\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-pitched squeal: the seal may not be getting water; correct the plumbing. If it has run dry, the rotor and carbon faces may be very hot.\u003c\/li\u003e\n\u003cli\u003eSpray or mist at speed after break-in: add ⅛\" more bellow compression with the rotor and repeat until it stops; check the rotor face run out is less than .002.\u003c\/li\u003e\n\u003cli\u003eDripping at rest: foreign material between rotor and carbon. Carefully work a clean rag around between the faces (with the boat afloat some water will come in and flush the faces), remove it and the leak should stop.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-maint\"\u003e\n\u003ch2 class=\"om-h\"\u003eInspection \u0026amp; Maintenance\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eInspect the bellows at least every 6 months for cracks, splits, tears or brittleness, and replace at any sign of deterioration. Replace the bellow at least every eight (8) years regardless of condition.\u003c\/li\u003e\n\u003cli\u003eInspect the stainless steel hose barb fittings every 6 months for corrosion.\u003c\/li\u003e\n\u003cli\u003eIf the boat sits idle for a long time (generally 3 months or more), it may be necessary to move the carbon face back to let a small amount of water in.\u003c\/li\u003e\n\u003cli\u003eLimited warranty: three (3) years from first use or shipment, whichever comes first, to the original purchaser, through an authorized PSS dealer with dated proof of purchase.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp class=\"om-note\"\u003eNeed a part that isn't listed? \u003ca href=\"\/pages\/contact\"\u003eAsk us to source it\u003c\/a\u003e and quote the part number from the PDF.\u003c\/p\u003e\n\u003ch2 class=\"om-h\" id=\"om-products\"\u003eProducts in this Manual\u003c\/h2\u003e\n\u003c\/div\u003e","products":[],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/collections\/PSS-Type-B-Shaft-Seal-Installation-Instructions-Cover.png?v=1792710533","url":"https:\/\/www.mauripro.com\/collections\/owners-manuals-pss-type-b-shaft-seal.oembed","provider":"MAURIPRO Sailing","version":"1.0","type":"link"}