Service Manual

Turbocharger Wastegate Actuator ISB, ISBe and QSB (Common Rail [...]
Page 10-62 Section 10 - Air Intake System - Group 10
To buy Cummins Parts and Service Manuals, Training Guides, or Tools go to our website at https://store.cummins.com
CAUTION
Be careful not to bend the control lever.
Air Regulator with Pressure Gauge Part Number 3823799
Disconnect the boost capsule actuator rod end from the
turbocharger wastegate lever. This can be accomplished
by slowly applying regulated air pressure to the boost
capsule until the control rod is activated.
Disconnect the control rod from the turbocharger
wastegate lever pin.
NOTE: If the boost capsule diaphragm material is
ruptured and will not hold air pressure, manually pull the
control rod outward in order to overcome boost capsule
spring tension for removal of the control rod from the
turbocharger wastegate lever pin.
Loosen the boost capsule mounting capscrews,
disconnect the air supply hose, and remove assembly
from the mounting bracket.
Leak Test
NOTE: In some applications, the turbocharger must be
removed in order to test the wastegate actuator. Refer to
Procedure Procedure 010-033
Disconnect the integral boost line from the wastegate
capsule.
Connect clean, regulated air pressure and a pressure
gauge to the capsule. Apply 200 kPa [29 psi] and check
for actuator rod movement.
NOTE: No air should be heard (i.e., leaking noise)
through a functional wastegate capsule.