Check of the moment of injection of fuel of the fuel pump of high pressure of the AAZ engine it is carried out in the following order:

PREVENTION On engines 1Z, AHU and AFN the moment of injection of the fuel pump of high pressure can be checked and adjusted with use of the special equipment at service station.

disconnect a wire from a negative conclusion of the rechargeable battery;

install the piston of the first cylinder in the top dead point;

check installation of pulleys of the fuel pump and camshaft and adjust if necessary;

Fig. 5.81. Fuel pump of high pressure: 1 – pulley; 2 – segment spline; 3 – fuel pump of high pressure; 4 – stopper; 5 – fuel-supply lines; 6 – heat-shielding washer; 7 – nozzle case; 8 – needle; 9 – adjusting washer; 10 – spring; 11 – valve; 12 – engine stop mechanism

unscrew a carving stopper 4 (see fig. 5.81 ) which is in a back part of the pump between unions of pipelines of high pressure;

in a carving opening screw in an adapter of the indicator of hour type so that the measuring tip of an adapter acted on 2,5 mm;

slowly turn a bent shaft in the direction opposite to the worker until the arrow of the indicator does not stop, and install the indicator of hour type on zero;

turn a bent shaft of the engine clockwise and install the piston of the first cylinder in the top dead point. At the same time the indicator of hour type has to show value from 0,83 to 0,97 mm;

if the value shown by the indicator is in norm limits, remove an adapter with the indicator of hour type from the pump and screw in a carving stopper.

Adjustment of the moment of injection of fuel of the fuel pump of high pressure of the AAZ engine

Carry out in the following order:

weaken bolts of fastening of the fuel pump of high pressure to forward and back an arm;

turn the case of the fuel pump of high pressure until the indicator of hour type does not show value of 0,92 mm;

in this position of the pump tighten bolts of fastening of the fuel pump.