3.2.5.1.8 Reinstall the filter element, install the sealing gasket and upper cover, and tighten the screws. <br>3.2.5.1.9 Restore the upper cover short section and accessory connection joints. <br>3.2.5.1.10 Remove the minimum pressure valve assembly, check whether the piston, sealing ring, and spring meet the requirements or replace this assembly.
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