Removal of the fuel pump of high pressure

Carry out in the following order:

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

remove the air filter and the measuring instrument of a stream of air;

uncover heads of the block of cylinders and casings of a gear belt;

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

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

take off a gear belt from pulleys of the fuel pump 1 (fig. 5.81) and the camshaft;

record a pulley of the fuel pump from a provorachivaniye and unscrew a bolt of fastening of a pulley;

using a stripper, remove a pulley from a shaft of the fuel pump;

using two wrenches, unscrew fuel-supply lines 5 from a back part of the fuel pump and fuel nozzles 16;

unscrew the giving and returnable fuel-supply lines from the fuel pump of high pressure;

remove a returnable fuel hose from a fuel nozzle;

disconnect the electric socket from the electromagnetic valve of a stop of the engine;

on the AAZ engine disconnect a cable of start of the cold engine from the fuel pump;

on the AAZ engine disconnect an accelerator cable from the lever of the fuel pump;

on engines 1Z, AHU and AFN mark and disconnect electric sockets from fuel nozzles and the block of the regulator of amount of fuel;

on all engines, except the AAZ engine (since October, 1994) if the fuel pump is repeatedly installed, using a chertilka, note position of the pump in relation to a forward arm.

The AAZ engine (since October, 1994)

Mark and disconnect electric sockets from the valve of the moment of injection, the sensor of a cycle of injection of the gate-type valve of enrichment and the executive mechanism of turns of idling;

on later models with one multicontact electric socket disconnect the electric socket from an arm and unscrew a bolt of fastening of the tire of grounding;

on cars with the air conditioning system disconnect a vacuum hose from the executive mechanism of increase in turns of idling.

All models

Unscrew a bolt of fastening of a back part of the fuel pump;

unscrew three nuts of fastening of a forward part of the fuel pump and disconnect the fuel pump from the engine.

Installation of the fuel pump of high pressure

You make in the following order:

install the fuel pump on the engine and screw in a bolt of fastening of a back part of the fuel pump, having tightened it the required moment;

screw in bolts of fastening of a forward part of the fuel pump and tighten them the required moment. If the pump is installed repeatedly, before tightening of bolts of fastening of the fuel pump combine the tags put before removal of the pump;

on all engines, except the AAZ engine (since October, 1994) fill in in the fuel pump of high pressure diesel fuel via the union for connection of a returnable fuel pipe;

connect the fuel-supply lines connecting the fuel pump of high pressure and fuel nozzles;

connect the giving and returnable fuel tubes to the fuel pump;

connect to fuel nozzles of a tube of return of fuel;

establish a pulley on a shaft of the fuel pump and fix by a bolt, having tightened it by hand;

combine adjusting openings in a pulley of the fuel pump and an arm of the fuel pump and establish a blocking core;

establish a gear belt, check and if necessary, adjust the moment of injection of the fuel pump;

adjust a tension of a gear belt and tighten a bolt of fastening of a pulley of the fuel pump the required moment;

establish casings of a gear belt and a cover of a head of the block of cylinders;

further installation is made in the sequence, the return to removal.

Engines 1Z, AHU and AFN

Check and, if necessary adjust the dynamic moment of injection of fuel at service station.

AAZ engine

Connect a cable of an accelerator and a cable of start of the cold engine to the fuel pump of high pressure;

on the engines made till October, 1994:

check and if necessary, adjust the static moment of injection of the fuel pump;

check and, if necessary adjust idling turns;

check, and if necessary, adjust the maximum turns of the engine;

check and, if necessary, adjust the increased idling turns.