Service Manual

Sea Water Pump ISB, ISBe and QSB (Common Rail [...]
Page 8-86 Section 8 - Cooling System - Group 08
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Be sure to note the direction of impeller fins for proper re-
installation. Mark the outer surface.
If the impeller does not have a threaded bore, grasp the
hub of the impeller with pliers and remove the impeller
from the impeller bore.
Inspect for damage such as rips, tears, chunks of material
missing, or wear on the edges of the blades.
Replace as necessary.
Clean the internal pump surfaces.
Lubricate the housing with silicone or glycerine non-
petroleum-based lubricant. Petroleum-based lubricant will
damage the rubber impeller.
If non-petroleum-based lubricant is not readily available,
use soapy water to ease installation.
If the impeller is in good shape and will be reused, install it
in the same direction from which it was removed. See the
mark you made during removal.
If the impeller was not marked and the original rotation or
direction can not be determined, replace the impeller with
a new one.