5-96 Maintenance Procedures
5. Use the 8-mm Allen wrench to remove the oil filler plug.
6. Use the 8-mm Allen wrench to remove the oil drain plug.
7. Tip the pump toward the drain plug aperture and allow the oil to drain
completely into the container.
8. Dispose of the roughing pump oil in accordance with local environmental
regulations.
9. Ensure that the O-ring on the oil drain plug is clean and properly
seated.
Warning: The roughing pump oil can be contaminated with
biohazardous and/or toxic materials. Ensure that they are
correctly disposed of according to local environmental
regulations.
Caution: Observe these precautions to avoid oil leakage when
fitting the oil drain plug to the roughing pump:
• Ensure that the plug is not cross-threaded.
• Ensure that the O-ring is not pinched.
• Do not overtighten the plug.
Oil filler plug
Oil-level sight glass
Drain plug
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