Service Manual

ISB, ISBe and QSB (Common Rail [...] Turbocharger Coolant Hoses
Section 10 - Air Intake System - Group 10 Page 10-55
To buy Cummins Parts and Service Manuals, Training Guides, or Tools go to our website at https://store.cummins.com
Remove
NOTE: All lines and banjo screws used in the coolant
plumbing have increased annulus ports. Always use the
correct Cummins part number and do not use standard
lines or banjo screws as a substitute.
Remove the supply and return coolant lines that attach to
the variable geometry turbine bearing housing.
Discard the seals.
Disconnect the variable geometry actuator supply and
return coolant lines from the actuator.
NOTE: Three of the connections are banjo fittings. The
connection from the block to the turbocharger at the block
location is a quick-disconnect fitting. Pinch the quick-
disconnect fitting to remove it from the block fitting.
Discard the seals.
Remove the coolant vent line from the top of the
turbocharger turbine housing and the coolant expansion
tank.
Remove the coolant outlet line hose clamps from the
turbocharger turbine housing connection and the coolant
transfer tube. Remove the coolant outlet line.
Remove the hose pipe fittings from the turbocharger
turbine housing and the coolant transfer tube.
Inspect
Inspect for burrs or debris around the banjo fittings.
Inspect for cracks in the lines and connectors. Replace as
necessary.
Inspect the hose fittings and clamps for cracks or other
damage.