Service Manual

ISB, ISBe and QSB (Common Rail [...] Sea Water Pump
Section 8 - Cooling System - Group 08 Page 8-85
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CAUTION
If the impeller has failed and pieces are missing, all
pieces must be retrieved. The engine heat exchanger,
gear oil cooler, and sea water aftercooler must be
flushed. Refer to procedures 008-053, 008-041, and
010-005 for flushing these components. Failure to do
so can result in overheating and damage to engine
can occur.
Impeller debris can also drop into the inlet piping. Make
sure all debris is removed before installing a new impeller;
otherwise, additional impeller failures or engine
overheating will occur.
Remove the capscrews. Lift off the cover.
Use a small screwdriver to remove the o-ring (A).
Use a small screwdriver to remove the inner cap (B).
Clean the o-ring groove.
CAUTION
Do not pry against the pump housing to remove the
impeller as this can cause damage to the liner.
Be sure to note the direction of impeller fins for proper re-
installation. Mark the outer surface.
An impeller removal tool is available from Sherwood
Pumps, Part Number 23631.
If the impeller is equipped with a threaded insert, use the
special tool or a ¾-NFT bolt (1) to insert in the impeller to
pull the impeller out.