Click here to view, print, or download About High Lifter Water Pump O-Rings.pdf
There are 9 kinds of o-rings in the High Lifter. These are available in 10-1310 O-Ring Assortment for 4.5:1 Pump, or 10-1312, O-Ring Assortment for 9:1 Pump. There is only one kind of o-ring that is replaced in a rebuild, the Spool Valve O-Ring. Most of the o-rings don’t need replacing unless there are visible leaks from the pump. The O-Ring Kits are not rebuild kits because they don’t have any pistons in them. Rebuild Kits with pistons are available from High Lifter Pump Service. Put a little Silicone Grease on all the o-rings to improve sealing and make installation easier, except don’t use it on the Spool Valve O-Rings, it makes them harder to install. |
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This view shows the following o-rings and one rubber washer:
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This view shows the following o-rings: 7. Low Pressure Piston O-Ring, qty 2, 10-1369, 4.5:1 model, or 10-1371, 9:1 Model. Sometimes these pop or break. They are included with all rebuild kits. If it breaks, the pump loses pressure. 8. Head O-Ring qty 2, 10-1355. Sometimes these snap if the Head is carelessly shoved into the Barrel. Major leaks result. 9. Central Tube O-Ring, qty 2, 10-1353. These very rarely wear out, but when they do, the pump loses pressure. 10. Comm Tube O-Ring, qty 1 per Head. 10-1347. If they get stiff, it causes nuisance leaks. 11. Check Valve O-Rings, qty 2 per Head. These last for a very long time. Only replace if there is a problem with the Check Valves. 12. End Washer O-Rings, qty 2, 10-1369, same size o-ring as the Low Pressure Piston 9:1 O-Ring. Older pumps don’t have End Washers with o-rings, but they improve sealing in that area. |
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