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Proper protection, such as gloves, eye wear, and aprons, are recommended when disassembling a Dosatron.
Step 12:
To change the plunger seal, pinch and roll it off
the plunger.
Step 11:
Take a close look at the plunger seal for nicks, scratches,
or wear. If you see damage or don’t remember the last time you
changed the plunger seal, just replace it now (Part #: JDI121).
D8RE2 Troubleshooting - Part 1
Step 10:
Pull the injection stem straight out from the body of the
injector.