Service Manual

ISB, ISBe and QSB (Common Rail [...] Sea Water Pump
Section 8 - Cooling System - Group 08 Page 8-87
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An oil filter strap wrench or even plastic wire straps can be
used as an installation aid to hold the vanes.
Guide the impeller into the housing, twisting it
counterclockwise as it is advanced so that the vanes will
be deflected in the proper direction.
Continue to turn the impeller while pushing it into the
housing. It will slide all the way in when the keyway lines
up with the key.
Insert the new o-ring into the impeller housing. Use a little
silicone grease to hold it in place.
Install the rubber impeller cap into the center hub of the
impeller.