Perkins — To check and adjust the operation of the waste-gate
Adjustments · Turbocharger waste-gate
From a Perkins service manual — check it applies to your exact model before use.
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Before you start
- Do not apply an air pressure of more than 205 kPa (30 lbf/in2) 2,1 kgf/cm2 to the actuator
Procedure
- Disconnect the boost sensor pipe at the actuator; connect an adjustable air supply with an accurate gauge
- Fasten a dial test indicator with plunger on the end of the actuator rod
- Slowly apply air pressure; check pressure necessary to move the rod 1,00 mm is within limits
- If incorrect, release the lock nut on the actuator arm; remove the clip and rod from the pin
- Rotate the end of the actuator rod in half-turn increments to change rod length
- Refit the rod, clip and lock nut; release the air pressure
- Re-check the pressure to move the rod 1,00 mm
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Rod movement 1,00 mm (0.039 in); pressure per turbocharger part number table
Source: Perkins service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.