(4) Check supply advance angle
General Oil Spill Act can be used to check supply advance angle, will be a high-pressure pump tubing joints loosened, will be connected to the injector end of the connector removed the tubing to the horizontal position, and then fastening the pump high-pressure tubing joints, throttle Rafah the greatest location, open decompression shake cars until the high-pressure pipeline exports out a few drops of diesel. Wiped off the milk tubing exit diesel, then slowly rotating flywheel. At the same time attention to the observation of the high-pressure pipeline export of oil, in its start moving moment on the immediate cessation of rotating flywheel. At this point, the body of water or line should be engraved on the flywheel at the only point in the first 16 ~ 20 �� between. If the two are in alignment before the oil spill, the oil advance angle too premature supply; only if more than oil spills, the supply advance angle is low, supply is too late.
It should be noted that, for multi-cylinder diesel engine, to install a special glass tube and indicators, measuring cylinder compression on the first point and only started when oil on the fan belt pulley arc between the two marks to determine supply advance angle is correct. At the same time, every single pump dispensing checks whether the same batch, if different, adjustable Tappet plunger and the clearance between the oil pump and the body or between the gasket thickness, the intermittent supply reach consensus.
When supply advance angle is too small or too large to be adjusted, different models of supply advance angle adjustment method different. 195 and 190 new diesel engine, fuel pump and changes through the body between the copper pads to adjust the angle of injection advance. Increase supply gaskets night time change, otherwise early. 190-1, and 1105 diesel engine, fuel pump to adjust the dynamic column with the adjustment screw to adjust the angle of injection advance to the Lane (outside) the supply screw fastening time variable night (early). 4115 diesel engine by adjusting the spline is set to fuel pump drive gear with the relative position to change the angle of supply in advance, Spline fuel pump with the then-Spline bushings clockwise rotation a hole, the increase in supply ahead of 3 �� angle so that the oil supply early Instead, a hole anti-clockwise rotation, the supply advance angle decreased 3 �� to supply night time change.
After more than the early transfer, check-cylinder exhaust temperature is consistent, if it can not resume the normal work of the engine, the cylinder pressure measurement should be whether or not within the scope of the permit and, if necessary, replace the valve piston ring or grinding, inspection Injector the spray conditions and opening pressure is normal.