Regal 53 SC Owner's Manual page 423

ZEUS STERN DRIVE MAINTENANCE
INTERVALS
Maintenance Procedures After the First 25 Hours of Operation
Not to Exceed 30 Hours of Operation
Change the transmission oil (fl uid) and fi lter, including
the transmission oil in the drop box.
Change the gear lube in the drive gearcase and gear lube
monitor. (This procedure can be completed with the ves-
sel in the water).
Every 6 Months
Check the trim tab anodes. Replace the anodes if they are
50% eroded.
Every 250 Hours of Operation or once per year (whichever occurs
fi rst).
Tighten the driveshaft connecting bolts and nuts to speci-
fi cations.
Inspect & lubricate the driveshaft slip joint.
Inspect the driveshaft u-joints; lubricate if equipped with
grease fi ttings.
Change the gear lube in the drive gearcase and gear lube
monitor.
Change the transmission oil (fl uid) and fi lter; including
the transmission oil in the drop box.
Every 500 Hours of Operation or Once a Year (whichever occurs
fi rst).
Lubricate the propeller shaft splines and tighten the pro-
peller nuts to specifi cation.
Inspect the hydraulic system fi ttings and hoses found on
the drive for leaks or damage. Check the hose fi ttings for
tightness.
Check the bonding (continuity) circuit for loose or dam-
aged connections. Test the MerCathode® unit output.
Inspect the electrical system for loose, damaged, or cor-
roded connectors.
Cosmetic Care & Maintenance
Inspect the cooling system components found on the
drive for damage or leaks. Check the hose clamps on the
hoses for tightness.
Check that the water inlet openings on the seawater pick-
up are clean and not obstructed.
Inspect the exhaust system connections on the drive for
damage and leaks. Check the hose clamps on the hoses
for tightness.
Use Mercruy Corrosion Guard to protect the product
from corrosion.
Whenever the Vesselview fault code "Filter Diity Fault", "Filter
Clog Fault" or "Service Steering Filter" is displayed.
Change the hydraulic oil and fi lter for the steering and
trim system. (Refer to the information regarding the
steering actuator and trim hydraulic oil).
Maintenance-Zeus Key Torque Values
Pod rings= 65 ft. lbs.
Coupler bolts= 110 ft. lbs.
Turbo connections= 18 ft. lbs.
Drive exhaust elbow= 18 ft. lbs.
"T" bolt clamps= 30 to 60 inch lbs.
Large prop nut= 100 ft. lbs.
Small prop nut= 60 ft. lbs.
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