Page 169 - Manual_Polaris_RZR_ProXP-20-21

ENGINE / COOLING SYSTEM

ACTUATOR / WASTEGATE INSPECTION 3. Using the turbine discharge flange as a mounting
The actuator pod, actuator rod/linkage and internal point, fasten a magnetic base dial indicator to the
wastegate flapper components, along with the boost turbine housing, touching the dial indicator plunger to
control solenoid, are responsible for releasing pre-turbine the outer wastegate crank arm q in the axial
exhaust pressure and limiting boost pressure. The direction so that the opening distance of the
actuator is located outside of the turbocharger, wastegate flapper valve is measured by the dial
positioned below the unit with the actuator pod fastened indicator.
to the compressor housing by M6 fasteners.
1. If a condition where little-to-no boost pressure is seen
under wide open throttle, ensure that the actuator rod
is still properly fastened, the flapper arm is still under 3
tension from the actuator pod, and that no
mechanical component failures have occurred.
2. Feel for any free-play on either end of the actuator
rod. Ensure that the actuator crank arm is holding the
internal wastegate disc firmly closed.

IMPORTANT
The location of the dial indicator plunger should be just
below the crank arm upper taper, as close to the axis of
the heim joint as possible.

4. Zero the indicator dial with the flapper in its natural
resting position with no air pressure applied to the
actuator pod.
5. With the use of an air regulator and pressure gauge,
attach an air supply line to the actuator pod pressure
reference port, located on the top of the canister.

9930583 R01 - 2020-2021 RZR PRO XP / XP 4 Service Manual 3.25
© Copyright Polaris Industries Inc.