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Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
D25RE2 Troubleshooting - Part 2
Step 6: Inspect the seal (Part #: J051) and the check valve
assembly (Part #: MPDI122). If they are dirty, you may be able to
soak, brush off, and reinstall. If you see damage or if you don’t
remember the last time you changed these parts, just replace
them now.
Step 5: Then carefully pry the check valve assembly down
and out of the stem. A small at blade screwdriver or pick
(Part #: TOOL02) will make this easier.
Step 4: Remove the check valve seal.
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