Drain Raw Water (Sea Water) - ILMOR MV8 Owner's Manual

SECTION 7 ILMOR MV8 OWNER'S MANUAL
7-10
7. Any uncertainty about the condition of the impeller means that it
should be removed and inspected. The impeller fits very snugly and
will require some care in removing and reinstalling or installing a new
one. This ensures proper operation. The use of soap or water-based
petroleum jelly will help with installation. Note that proper placement
on the gear results in a squeeze on the arms. This is the correct
installation.
8. Ensure that the gasket or O-ring surfaces are smooth and clean. Place
a gasket between the housing and the cover. Reinstall with the screws
loosened with the face plate was removed earlier. Do not overtighten
the brass screws as it will cause them to break.

DRAIN RAW WATER (SEA WATER)

See also the instructions for Flush the Raw Water/Sea Pump System on
page 5-1. For closed cooling systems, see Drain the Engine Coolant on
page 7-11 and Fill the Engine Coolant on page 7-11.
NOTE: Filling and air bleeding is automatic when the raw water pump is
operating, i.e., pumping fresh water from the lake or garden hose. There is no
need to leave any caps, drain plugs or hoses open for air bleeding.
For open cooling systems:
1. Drain exhaust manifolds of raw water by removing the two lower
cooling hoses connected to the 90° fittings.
2. Drain engine block of raw water.
For open cooled 5.7L applications: Remove knock sensors/drain
•
plugs from both sides of the engine block.
For all open cooled 6.0L, 6.2L and 7.4L applications: Remove
•
drain plugs from both sides of engine drain hoses.
3. Drain heat exchangers of raw water.
• Open cooled systems will have an oil/transmission heat exchanger.
Remove the drain plug and allow the cooler to completely drain.
• Closed cooled systems will have an oil/transmission and engine
heat exchanger. Remove the drain plug and allow the cooler to
completely drain.
4. Reinstall cooling hoses, engine block drain plugs and heat exchanger
end caps/drain plugs after all the raw water has been drained. Drain
other components that contain raw water, such as the water heater.
5. Torque knock sensor retaining nut to 15 ft-lb (20 N·m).
© 5/2013 Ilmor Marine, LLC, Version 1.0