Specifications

DISASSEMBLY OF RV STYLE RELIEF VALVE
Refer to the sectional drawing shown in Figure 5.6.
WARNING
DO NOT remove the relief valve cap (24) without reading the instructions without reading the instructions below on
disassembling the valve. The relief valve contains a powerful spring (29) that may cause injury or death if released
suddenly.
• WARNING! Relieve all internal fluid and air pressure inside pump before beginning disassembly.
• WARNING! Take necessary precautions to prevent pump from rotating while working on relief valve.
• WARNING! Fluid may spill out of the pump when the relief valve faceplate (23B) is removed.
Take all necessary precautions to protect yourself, others, and the nearby area from any harm this fluid may do.
1. Turn off pump and lock out energy source to driver.
2. Close inlet and discharge valves.
3. To drain pump, follow the procedure in Section 7, INSTRUCTIONS FOR DRAINING PUMP.
4. Decrease pressure on spring (29) by loosening lock and seal nut (27) and unscrewing adjusting screw (26)
until adjusting screw turns freely.
5. After decreasing pressure on spring (29), remove the relief valve cap (24) by unscrewing it from faceplate
(23B).
6. Remove spring (29), poppet (30), spring washer (32), and spring guide (28).
7. Inspect all parts and replace worn or damaged parts as required.
ASSEMBLY OF RV STYLE RELIEF VALVE
1. Install poppet (30) into faceplate (23B).
2. Install spring (29) into faceplate (23B) making sure that spring is centered on poppet (30) and resting on
spring washer (31).
3. Place pilot of spring guide (28) into I.D. of spring (29).
4. Screw adjusting screw (26) with lock and seal nut (27) assembled into hole in relief valve cap (24).
5. Place small end of adjusting screw (26) in hole in spring guide (28) and screw relief valve cap (24) into
faceplate (23B).
6. Adjust relief valve by following steps shown in how TO ADJUST THE RV STYLE RELIEF VALVE.
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