Section 5 - Maintenance
Page 92 90-866938081 MAY 2009
3. Inspect the gear lube level in the gear lube monitor. The gear lube level should be
between the "COLD FILL LEVEL" (cold full line) and the "MAX OPERATING
LEVEL" (hot full line).
"COLD FILL LEVEL" (cold full line)
NOTE: After the drive has been operated and the gear lube is hot, the fluid expands and
may be up to the "MAX OPERATING LEVEL" (hot full line).
"MAX OPERATING LEVEL" (hot full line)
IMPORTANT: If any water is visible at the bottom of the gear lube monitor or if the gear
lube appears discolored, contact your Cummins MerCruiser Diesel Authorized Repair
Facility immediately. These conditions may indicate a water leak in the drive.
4. If the level is lower than the "COLD FILL LEVEL" (cold full line), refer to Filling.
NOTE: The Premium Gear Lubricant used during the break‑in period is brown in color. The
color of High Performance Gear Lube, used after break‑in, is blue. Do not mix the gear
lubricants.
5. If the cap was removed, ensure that the gasket for the gear lube monitor cap is properly
positioned and install the cap. Do not overtighten.
a - Gear lube monitor
b - Cap
6. Install the drive cover if removed. Refer to Installing the Drive Cover.
7. If your model is equipped with a drive cover, install the access cover.