Mercury Zeus 3000 Series User Manual

Section 5 - Maintenance
90-866938081 MAY 2009 Page 125
Reference Electrode 91‑76675T 1
9188
Senses the electrical current in the water when testing the
MerCathode system. Use to check hull potential.
Contact a Cummins MerCruiser Diesel Authorized Repair Facility for testing or refer to the
appropriate Cummins MerCruiser Diesel Drive Service Manual for testing procedures.
Trim Tab Anode
CHECKING
1. Inspect the trim tab anodes.
2. Replace the anode if eroded 50 percent or more.
41251
Trim tab anodes
REPLACING
IMPORTANT: The trim tab cylinder is equipped with a check valve to avoid the lowering
of the trim tab after shut down. When service is required lower the trim tab before shutting
the engine down.
1. Completely lower the trim tab.
2. Remove the five trim tab anode attaching screws on each anode from the bottom of
the trim tab.
b
a
39660
a
Removing the starboard anode
a - Screw (5)
b - Anode
3. Inspect and replace any trim tab anode mounting screws damaged by corrosion.
4. Remove and discard the trim tab anode.
5. Clean the trim tab anode mounting surfaces to bare metal.
6. Apply adhesive to the threads of the five trim tab anode screws.

Mercury Zeus 3000 Series Specifications

General

Brand	Mercury
Model	Zeus 3000 Series
Category	Engine
Language	English