Flush Coolers; Replacing The Serpentine Belt - ILMOR 2011 MV8 User Manual

Flush Coolers

Replacing the
Serpentine Belt
temperature reaches 169 F (76C).
• Top off coolant reservoir as needed.
• Check the coolant concentration level (an anti-freeze hydrometer is recommended).
• Check coolant level after first complete warm-up and cool down cycle. Addi-
tional coolant may need to be added.
Drain heat exchangers of raw water.
• Open cooled systems will have an oil/transmission heat exchanger.
• Remove heat exchanger drain plugs and allow draining.
• Closed cooled systems will have an oil/transmission and engine heat exchanger.
• Remove heat exchanger drain plugs and allow draining.
• Flush fresh water through the coolers from the raw water fittings. An adapter
may be needed. It is better to flush water from one end of the cooler and then
from the other end. This should flush out any foreign particulates.
NOTE: A properly mounted serpentine belt
small amount of "play." Without a small amount of play, the belt will wear out well
earlier than should be expected. Too much play will allow the belt to come off the pul-
ley system. Press your thumb against the belt at several locations along the serpentine
route. The belt should give no more or less than 1/8" to 1/4". When the belt is off, at-
tention should also be given to the quality of wear of the grooves on the underside of
the belt where it makes contact with the pulleys. If you are unsure of the wear pattern,
check against a new belt. If there is any uncertainty, seek assistance from your authorized
ILMOR dealer. If the belt is too loose and comes off or too tight and wears through, it
will cause the electrical system to malfunction. This could occur during an outing and
strand the boaters. T herefore, take this maintenance function very seriously.
• The serpentine belt is located on the front of the engine, except in V -drive
boats where it will be at the back due to the manner in which the engine is
mounted in the boat.
• Using a 15mm socket wrench, remove tension from the belt by moving the ten-
sioner to its maximum travel position.
• Remove the serpentine belt by unwrapping it from each of the pulleys.
• Check the wear on the inside grooves. If this is part of the annual maintenance,
most likely the serpentine belt will need to be replaced.
• To install a new belt or to reinstall the existing belt, wrap the belt around the pulleys
as shown, and use a 15mm socket to rotate the tensioner to its maximum travel. T his
should allow enough slack to slide the belt over the smooth, water pump pulley.
• Ease the tensioner back into place and ensure that the belt is properly wrapped
around all of the pulleys.
• Check that the belt has the proper give.
Locate the engine coolant heat exchanger.
2011 ILMOR MV8 Owner's Manual • Page 35
should have a
It is installed