Contents: Examination ⤓ Adjustment ⤓
Examination
1. Prepare the vehicle for testing (warm up the engine to normal operating coolant temperature).
2. Connect the MUT-II device to the diagnostic connector.
3. Check the engine idle speed, which should be (825±25) min⁻¹.
4. If the measured value does not match the nominal value, adjust according to the following diagram.
Adjustment
5. Loosen the lock nut and then turn the idle speed adjustment screw to adjust it (the speed should correspond to the nominal value).
6. Tighten the idle speed adjustment screw lock nut.
Fig. 4.9. Checking and adjusting the engine crankshaft speed at idle: 1 – fuel injection pump control lever; 2 – idle speed adjustment screw; 3 – limit screw; 4 – flat feeler gauge
7. Install a 4 mm thick flat feeler gauge between the fuel injection pump control lever and its travel limiting screw (Fig. 4.9).
8. Make sure that in this case the idle speed is (1250±100) min⁻¹. If the rotation speed is outside the set limits, adjust it by turning the travel limiter screw of the fuel injection pump control lever.
(The text of the article was taken from the website: «MitsubishiMan.ru»)
9. Tighten the lock nut of the limit screw.
10. Remove the flat dipstick.
11. Check that the idle speed is within the specified range. If the idle speed is outside the specified range, repeat the adjustment operations.
12. Disconnect the MUT-II device.