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Repairing Mercedes W123 Fuel Door Lock Actuator

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Since the diaphragm was not torn on this actuator the diaphragm was removed, the actuator and diaphragm were cleaned with mild soap and water, and then the diaphragm was greased with synthetic grease such as dielectric.

Removing this diaphragm is very similar to removing the ones on the early style door lock vacuum actuators. Click here to see that guide for some tips on removing the diaphragm.

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