Place the turbocharger on a suitable workbench. Using
a small flat screwdriver, carefully remove the hose clip
(75) and discard. Pull the flexible hose from the
actuator spigot.
HX25/25W/27W Service Repair Manual Component Testing and Replacement
Wastegate Actuator Checks
4:14
Connect and secure the hose from a regulated
compressed air supply to the actuator spigot.
Carefully apply pressure to the actuator from the
regulated compressed air supply Max 300 kPa
(45 lbf/in
2
) and check for actuator movement.
If movement is confirmed when using remote air supply
check that turbocharger hose assembly is not
damaged. If damage is found, replace with new hose
and clips.
Seized Actuator Check
If rod does not move check wastegate actuator for air
leaks. If no air leak is found and rod does not move,
check valve mechanism for seizure according to
procedure defined in Wastegate Mechanism Check.
Warning
Wear safety glasses at all times during the
disassembly process.
Caution
Do not remove turbocharger from engine unless an
actuator check is impractical due to space or access
limitations or where an on-engine check has shown a
problem exists.
Warning
Avoid touching the wastegate rod end area as finger
injury may result from sudden movement of the
assembly when air pressure is applied.
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