Disassembly and Inspection
- Remove the End Caps on the Valve Body.
- Remove the Spool, check for excessive wear. If the new o-rings slide off the spool when it is held upright, the spool is worn out. HLPS part 1317.
- Using an angled pick, remove the Spool Valve O-rings. Check for wear, usually the center ones will be the most worn.
- Clean the spool area and especially the o-ring grooves, with a toothbrush.
Assembly and Testing
- Install the new Spool Valve O-Rings using an angled tip tool. See picture of install tool. Do not use a sharp pick to install these o-rings, they will likely be damaged that way.
- You can use the spool as a support to make it easier to install the o-rings. Insert the spool into the valve body so the top end of the spool is level with the lower edge of the center o-ring groove. This willgive you something for the o-ring to push against as you are trying to get it in its groove.
- Install the Spool and End Caps.
- Apply water pressure to test the pump.
- You may have to push on the Buttons on the Valve Body to purge the air out of the pump.
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Spool O-Ring removal tool. This is a pick tool available at hardware stores. Never re-use o-rings after they have been picked by this tool, they will fall apart. |
Spool O-Ring installation tool. This is a dental tool that has a small spoon shape on it, and the spoon has been bent at a 45° angle. Don’t use anything sharp to install o-rings. |
The Spool end gives a surface to push against so the o-ring can seat in its groove easily. Use a tool with a small bent spoon shape to push the o-ring into position. |
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