If they are not Bennett tabs you might look at http://www.arcomarine.com/
They manufacture a few different types of pumps used for trim tabs.

"MANSFI" wrote in message
...
Can someone assist? I have a 22' Grady center console. The boat has
hydralic
trim tabs. I have sarched everywhere and cannot locate any fill tubes or
caps
to allow for topping off the fluids?