24 Crafted with CRAFTSMAN MARINE
Maintenance and inspection
8
The rubber impeller of the raw water cooling circuit
must be inspected every year and when the volume of
cooling water coming out of the wet exhaust seems to
be decreasing or the engine cooling seems inadequate.
Check-up of raw water pump impeller
Impeller removal
Re-installation impeller
• Close the seawater inlet cock
• Loosen the screws of the cover
• Remove the cover and use an impeller removal tool
to remove the impeller.
• Inspect the impeller blades for cracks and replace if
necessary.
• When the impeller is damaged, be sure any rubber
residues are removed from the pump housing and
water pipes before replacing the impeller.
• Use a silicone spray to lubricate the impeller before
fitting
• Fit the impeller to the pump shaft
• Fit cover while placing a new gasket
• Open the seawater inlet cock
The rubber impeller should never
run dry! If the water supply has been
blocked (closed seacock, etc) the
impeller may need replacement.
ALWAYS CARRY A SPARE IMPELLER
ON BOARD! (AA.480.90021)
AA.480.90021
Содержание CM4.65
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