- remove the engine protective cover;
- disconnect the negative battery cable;
Figure 4.99. Preparing to remove the fuel pressure regulator: 1 - fuel filter support; 2, 3 - hoses; 4, 6 - fuel lines; 5 - fuel filter
- disconnect, close with plugs and move aside tubes 4 and 6 (figure 4.99);
- lift and move the fuel filter 5;
- release from the clamps and move aside the lower hoses 2 and 3;
- remove support 1 of the fuel filter;
Figure 4.100. Removing the fuel pressure regulator: 1 - pressure regulator; 2 - connector; 3 - bolts
- disconnect connector 2 (figure 4.100);
- clean and vacuum away dirt around fuel pressure regulator 1;
Caution: Do not use a screwdriver to remove the pressure regulator.
- unscrew the two bolts 3 securing the regulator;
- remove the pressure regulator 1 manually by turning it right and left half a circle and simultaneously pulling it out;
Figure 1.101. Transportation of long loads
- close the resulting hole with a plug 1 (figure 1.101).
Install the high pressure fuel regulator on the high pressure fuel pump in the following order:
Figure 4.101. Installing the plug: 1 - plug
- remove plug 1 (see figure 4.101);
Note: Use a mirror to ensure that the seat where the pressure regulator was located is free of dirt and clean and vacuum if necessary.
- install new bushing and seals on the pressure regulator and lubricate them with Vaseline (or similar composition);
Figure 4.102. Installing the fuel pressure regulator: 1 - device; 2 - bolts; 3 - central bolt; 4 - Teflon disk
- install the pressure regulator in fixture 1 (figure 4.102) and tighten the bolts of the 2 fixtures to the end of the thread;
- insert teflon disc 4 between pressure regulator and device 1;
- tighten the central bolt 3 in such a way as to hold the pressure regulator at the inlet to its seat without damaging the seal;
- press in the pressure regulator using tool 1 until it touches the fuel injection pump body;
- remove fixture 1;
- reinstall bolts 3 (see figure 4.100);
- pre-tighten bolts 3 to a torque of (2.5±0.2) Nm;
- finally tighten the bolts 3 to a torque of (9±1) Nm;
- reconnect connector 2;
- install support 1 (see figure 4.99) fuel filter;
- install hoses 2 and 3 in place;
- install fuel filter 5;
- reconnect fuel lines 4 and 6;
- connect the wire to the negative terminal of the battery;
- turn the ignition on and off (about 3 times);
- start the engine;
- increase engine speed to 4000 min⁻¹;
- make sure there are no fuel leaks in the connections and error codes;
- check the operation of the vehicle components under road conditions by driving at least 30 km, stopping and starting the engine several times, accelerating with the accelerator pedal fully depressed.