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12 INFORMATION ON ADJUSTMENTS

12.1 'Waste Gate' opening valve regulation

Important

 Before proceeding with operation, read Par. 3.3.2 .

 Regulation must not be carried out with the engine running.

 During the procedure in point 5 , pay special attention not to bend rod H .

1. Disconnect the hose A from the turbocharger, and connect a pressure gauge B (scale from 0 to 5

bar).

2. Connect the gauge B to the network of compressed air, interposing a pressure reducer C .

3. Position dial gauge D in such a way that feeler F rests onthe Waste Gate rod control valve extremity

H (point E ).

4. By using gradually the reduction gear C send the air to the Waste Gate actuator control L in order to

move rod H forward by 1 mm (value M to check on dial gauge D). Pressure read on gauge B must

be: 1350 mbar for engine model KDI 2504 TCR and 1250 mbar for engine model KDI 1903 TCR.

5. If pressure is less or more than the indicated value, proceed as follows: - Undo lock nut G from rod

- Remove the retainer cotter pin (point E ) and disconnect rod H from the Waste Gate control lever.

- Tighten (to increase) / or loosen (to decrease) pressure of the ring nut of rod H until reaching the corrected

calibration.

- Redo lock nut G .

- Reconnect rod H and assemble the cotter pin point E .

Kohler KDI 1903 TCR Workshop Manual

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