For the leakage issue of Agilent 66319D solvent delivery module, here are some common troubleshooting methods (note: since no direct search results were found for this specific model, the following are general effective practices for similar solvent delivery modules):

1. Check all tubing connections and fittings: Ensure they are tightened properly, as loose connections are a common cause of leakage.
2. Inspect seals and gaskets: Focus on pump head seals, injector seals, and solvent inlet/outlet seals—worn or damaged ones need replacement.
3. Examine components for cracks: Check solvent tubing, reservoir caps, and other plastic/glass parts for visible cracks.
4. Monitor pressure readings: Abnormal fluctuations (e.g., sudden drops) often indicate hidden leaks.

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