Carefully move the lever arm up and down. If the arm
moves freely by hand, then re-check for movement of
actuator rod.
Apply an air pressure of 300 kPa (45 lbf/in
2
) to the
actuator spigot inlet. If the rod does not move, replace
the actuator with a pre-set replacement kit (74).
If the lever arm is seized, the turbine housing will
require replacement. However, it may be possible to
free the lever arm.
HX25/25W/27W Service Repair Manual Component Testing and Replacement
Wastegate Mechanism Check
4:16
Soak wastegate valve and lever mechanism in
penetrating oil.
Some turbine housing options do not have open access
to the wastegate valve but, with care, soaking with
penetrating oil may still be possible.
Clamp a pair of mole (vice) grips to the lever and gently
apply pressure to rotate the lever arm in an arc.
If this process does not free the lever, pin and valve
mechanism, a new turbine housing must be fitted.
Caution
Extra care must be taken when attempting to free the
valve mechanism. Any damage will result in the
replacement of the turbine housing.
Warning
Always wear safety glasses.
To Next Page
Loading...