This is a instruction guide on how to remove injection timing for Kubota U48-4 U55-4 excavator.
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Procedures:
1.Make sure of matching the injection timing align mark (1) of the injection pump unit and the flywheel housing, as shown in the illustration.
2.Remove the injection pipes.
3.Remove the stop solenoid.
4.Set the fuel control rack fixing tool (3) to fix injection pump control rack as shown in the illustration.
5.Turn the flywheel counterclockwise (viewed from flywheel side) until the fuel fills up to the hole of the delivery valve holder (4) for No.1 cylinder.
6.After the fuel fills up to the hole of the delivery valve holder (4) for No.1 cylinder, turn back (clockwise) the flywheel around 1.6 rad (90
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