Perkins — Wastegate - Test
Testing & diagnosis · Turbocharger wastegate
From a Perkins service manual covering: 402D-05, 403D-07, 403D-11, 403D-15, 404D-22, 404D-22T, 404D-22TA. Check it applies to your exact model before use.
Applies to: Perkins 402D-05, Perkins 403D-07, Perkins 403D-11, Perkins 403D-15, Perkins 404D-22, Perkins 404D-22T, Perkins 404D-22TA
Before you start
- Hot engine components can cause injury from burns. Allow the engine to cool.
Procedure
- Remove the heat shield from the turbocharger and the guard for the wastegate.
- Remove the boost line from the wastegate; connect an air supply that can be adjusted accurately.
- Fasten a dial gauge so the end of the actuator rod contacts the plunger.
- Slowly apply air pressure until the actuator rod moves 1.0 mm (0.039 inch).
- Air pressure should be within 52 kPa (7.5 psi).
- Ensure the dial gauge returns to zero when air pressure is released; repeat several times.
- Consult a Perkins dealer or distributor if operation is not correct.
Tools required
- 21825617 Dial Gauge Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- actuator rod movement 1.0 mm (0.039 inch) at 52 kPa (7.5 psi)
Full service-parts list: Perkins 402D-05 →, Perkins 403D-07 →, Perkins 403D-11 →, Perkins 403D-15 →, Perkins 404D-22 →, Perkins 404D-22T →, Perkins 404D-22TA →
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.