Regal 53 SC Owner's Manual page 234

Overview- Drive Gear Lubricant
Note: The Zeus drive gear lubricant feature break-in
gear lube recognized by the brown color. This break-in
gear lube must be changed at 25 hours and no more than
30 hours. Drain the drive and gear lube monitor of the
break-in lube and fi ll with the specifi ed gear lubricant
which is 80-90 weight Synthetic Merc Oil (Merc # 92-
858064K01).
After break-in continue to use a 80-90 weight Synthetic
Merc Oil (Merc # 92-858064K01). This oil will be recog-
nized by a bluish color.
A few notes concerning the drive gear lubricant monitor
(reservoir).
A monitor switch is featured to detect a low level of gear
lubricant through an audio-visual alarm system.
The following procedures for checking and fi lling are for
situations where the drive gear lubricant level in the mon-
itor is low but still visible. Filling the monitor to the speci-
fi ed level whenever lubricant is still visible in the monitor
is correct.
If gear drive leaks out due to a seal problem an audio or
visual warning should alert the operator to a low lubricant
level. If an alarm sounds and the reservoir is empty do
not fi ll the reservoir monitor. This situation requires a dif-
ferent set of steps. Refer to the Zeus operator's manual
for more information.
Note: The drive gear lubricant on the gear lubricant moni-
tor changes during drive operation; always check the drive
gear lubricant when the engine is "off " and the drive oil
is cool.
Note: If drive lubricant is continually below the
"cold fi ll level" and/or the operator is frequently
adding drive lube to the monitor there may be a drive
seal leak. Contact your Cummins MerCruiser Diesel
Authorized Repair Facility.
Engine & Controls
Checking Drive Gear Lubricant
Follow these steps to fi ll the drive gear monitor (reser-
voir).
1. If necessary remove the top cover.
2. Remove the black cap from the drive gear monitor.
3. Visually inspect the monitor gear lubricant level. It
should be between the "cold fi ll level" (cold full line) and
the "max. operating level" (hot full line).
Note that after running the drive the lubricant expands
and may be up to the "max. operating level".
4. Check to see that the monitor cap gasket is positioned
properly and reinstall cap.
HOT FULL LEVEL
COLD FULL LEVEL
If the level is lower than the "cold full level" (cold full
line), refer to Filling.
45
CAP
MONITOR