Volkswagen Polo 3 with 1994 for 2001 of release.
1. The general data
2. The engine
3. Greasing system
4. Cooling system
5. Systems of injection of fuel
5.1. Measures on cleanliness maintenance at works on injection system
5.2. Security measures at works with injection system
5.3. Adjustment of idling and the maintenance WITH
5.4. Check of details of system of injection Mono-Motronic
5.4.1. Check of the device of heating of let in air
5.5. A cable of management throttle заслонкой
5.6. System of catching of steams of fuel
5.7. Check and replacement of the fuel pump
5.8. The fuel filter
5.9. System of injection of design Magnetti–Marelli 1 AV (since 1996)
5.10. System of injection of fuel Motronic МР 9.0 (since 1996)
6. Ignition system
7. Coupling
8. A mechanical transmission
9. A drive of wheels
10. A steering without the amplifier
11. A steering with the hydraulic amplifier
12. A forward suspension bracket
13. A back suspension bracket
14. Brake system
15. An electric equipment
16. Heating and ventilation system
17. An automatic transmission
18. Appendices
 











5-4-proverka-detalejj-sistemy-vpryska-mono-motronic.html

5.4. Check of details of system of injection Mono-Motronic





Fig. 112. Details of the air filter and details adjoining to it: 1 — the case of the air filter; 2 — a bolt / a nut, 10 Нм; 3 — the temperature gauge (the metal highway with a notch incorporates to an air collector 7); 4 — a lining, (always to replace); 5 — a clamp of angular position; 6 — a hose of warm air; 7 — an air collector with the regulating valve; 8 — a vacuum hose; 9 — a connecting hose; 10 — to an injector; 11 — a rubber tip; 12 — the return valve




Fig. 117. Explanatories to check of heating of let in air: 1 — position regulating заслонки during overlapping of a stream of warm air; 2 — position заслонки at temperature of external air from–20 to + 22 With




On fig. 111, 112, 113, 114, 115, 116, 117 the arrangement of separate details is shown.
At check of details of system of injection Mono-Motronic it is necessary to pay attention to the following:

Fig. 111. The air filter with details adjoining to it: 1 — the air filter; 2 — a bolt / a nut, 10 Нм; 3 — the thermostat; 4 — a safety spring clip; 5 — the thermostat case; 6 — a sealing ring of round section; 7 — the overheat gauge; 8 — a contact socket; 9 — the central tip; 10 — the block of management of system Mono-Motronic; 11 — an assembly frame; 12 — a hose of an admission of air; 13 — a hose of heating of air; 14 — насечные pins; 15 — an air inlet with the regulating valve; 16 — a hairpin, 15 Нм; 17 — a hose of giving of fuel; 18 — a fuel hose рециркуляции; 19 — the ljambda-gauge; 20 — a wire; 21 — a contact socket with four contacts; 22 — a lining; 23 — bolts, 25 Нм; 24 — an inlet collector; 25 — a vacuum hose; 26 — a water hose; 27 — an injector




- The thermostat 3 (fig. 111 see) serves for adjustment of heating of let in air;
- At input of a clip with a wire safety lock in the case 5 thermostats to check up reliability of its fastening;
- Always it is necessary to replace a sealing ring 6 round sections if the gauge 7 overheats was taken;
- The gauge 7 пререгрева is connected to the remote thermometer on the panel of devices (on the electric scheme it is designated as G2). If it is necessary for taking out, it is necessary to open cautiously a cover of a broad tank, if the engine still warm enough;
- The central tip 9 to take out only after ignition deenergizing. Before a tip detachment to wring out a clip;
- The block of 10 managements is established on the right party about a face wall of a motor compartment on a frame 11;
- The hose of 12 givings of warm air connects the case of an air inlet 15 to the air filter;
- The hose 13 heatings of an air inlet is connected to a collector of warm air on a final collector in the muffler;
- насечные pins 14 serve for fastening of a wire 20;
- The case of an air inlet 15 has regulating заслонку to warm up let in air;
- The hose of 17 givings of fuel fastens collars with spring clips. The hose has white marks and is connected on other end to the fuel filter;
- The hose 18 рециркуляции fuel is fixed by collars with spring clips. The hose has blue marks and is placed in a fuel tank;
- The ljambda-gauge 19 designated on electric schemes as G39, is established in a forward exhaust pipe. If it was taken out, at installation it is necessary to grease a carving with special plastic lubricant G5 and so that to exclude its hit in grooves on the gauge case. The inhaling moment makes 55 Нм. The gauge has electric heating. The reliable control of heating is possible only in the conditions of a workshop. A safety lock № 18 and relays for the fuel pump should work reliably to provide gauge functioning.
For check of a supply of pressure it is necessary to execute the following:
- To take out a two-port socket 21 and to check up it by means of connected on the accumulator between conclusions 1 and 2 (fig. 113 see) voltmeter pressure after engine start-up. The indication should make not less than 11 V.Pri absence of pressure to check up connection of wires. Again to switch off ignition and to insert a socket;

Fig. 113. Check of a socket of the ljambda-gauge: And — a socket; 1, 2 — voltmeter conclusions




- In need of dismantle of a wire 20 (fig. 111 see) it is necessary to take out насечные pins. For this purpose it is possible to screw the self-cut screw and to take out pins by means of a grip.
At heavy repair carrying out it is necessary to dismantle a plait of wires of the engine. For the help at repeated installation and connection fig. 114 on which the lining of a plait of the wires attached to the engine is shown is applied;

Fig. 114. A lining of a plait of wires on the engine at installation of system of injection Mono-Motronic: 1 — a junction with "weight"; 2 — spring clips; 3 — the gauge of pressure of oil (F22); 4 — an injector (N181) and the gauge of temperature of air (G42); 5 — the plug-in clip, is established on a plait of wires; 6 — a servomotor throttle заслонки (V60) c the idling switch (F60); 7 — a potentiometer of position throttle заслонки (G69); 8 — a place of connection for heating of an inlet collector (N51); 9 — the detonation gauge; 10 — the central contact socket; 11 — the gauge of temperature of a cooling liquid (G62); 12 — the Hall gauge (G40)




- The socket 21 (fig. 111 see) is connected to the ljambda-gauge and the device of heating of the ljambda-gauge. It is in the holder on a transmission;
- Always it is necessary to replace a lining 22;
- The vacuum hose being under depression 25 passes between an inlet collector and the amplifier of a brake drive;
- The water hose 26 is connected to the thermostat case. It brings the cooling liquid necessary for heating of fuel.

Fig. 115. Details of the top part of system of injection Mono-Motronic: 1 — the top part of an injector; 2 — a regulator of pressure of fuel; 3 — a sealing ring of round section; 4 — a safety washer; 5 — a lining; 6 — a bolt, 5 Нм; 7 — knot of fastening of an injector and the temperature gauge; 8 — an injector; 9 — fuel giving; 10 — a lining; 11 — fuel return; 12 — a sealing ring; 13 — a connecting detail




On fig. 115 fastening of the top part of an injector is shown. Works can be spent on the basis of the given drawing as follows:
- Bolt 6 (fig. 115) to tighten the moment 5 Нм. At installation to grease carving coils контровочным with means D6 from самоотворачивания carving connections;
- The detail 7 keeps the top part of 1 injector, the gauge of temperature of let in air is inserted into it. It is noted in electric schemes as G42;
- Sealing rings 3 round sections always are subject to replacement at replacement of an injector 8. Last is underlined in electric schemes as N181;
- At removal of a lining 10 it is necessary to remember its exact position for the subsequent installation. At damage устанавить a new lining;
- The regulator of 2 pressure of fuel corrects pressure of fuel in system. At a detachment топливопроводов it is necessary to operate cautiously as fuel emission is possible;
- The safety washer 4 should be removed to establish a new sealing ring of round section;
- To a junction 9 it is connected топливопровод the fuel givings, designated for descriptive reasons by an arrow;
- To a detail 13 it is connected топливопровод return of fuel which too is designated by an arrow.
If it is necessary to dismantle the bottom part of system of injection it is necessary to consider following recommendations:

Fig. 116. Details of the bottom part of system of injection: 1 — a servomotor throttle заслонки (V60); 2 — a bolt, 6 Нм; 3 — the idling switch (F60); 4 — a countersupport of deduction of a cable throttle заслонки; 5 — the bottom part of system; 6 — the restrictive screw; 7 — a bolt, 3 Нм; 8 — a fixing detail; 9 — connection of a vacuum hose for system with the filter of the activated coal; 10 — connection of a vacuum hose for system of heating of let in air; 11 — a sealing ring of round section to (replace); 12 — a potentiometer of position throttle заслонки




- The servomotor 1 (116) throttle заслонки regulates fig. opening and closing throttle заслонки, the idling switch is built in it (on electric schemes — V60). At installation it is necessary to remember that the idling switch is put in action only by means of a plastic plate of the switch with the restrictive screw;
- The switch 3 idlings supervised by system of diagnostics, regulates position throttle заслонки (in electric schemes it is designated F60). At switch replacement it is necessary to replace also and a servomotor of 1 moving throttle заслонки. The switch pusher is established with a certain backlash concerning the terminator by which it is possible to measure only at use of the special adapter reducing pressure of the accumulator to 6 V.Vykljuchatel is about fastening of a cable of management throttle заслонкой;
- The countersupport 4 holds a cable throttle заслонки. The cable is regulated by moving fixing хомутика on a countersupport. To adjust a cable follows so that the lever of the platen throttle заслонки provided its full opening. As much as possible admissible backlash on the lever of the platen throttle заслонки makes 1,0 mm;
- The restrictive screw 6 serves for adjustment of a potentiometer 12 throttle заслонки (it is work should be spent in automobile repair shop). The restrictive screw is adjusted and sealed up on manufacturer. The screw in no event it is impossible to turn on;
- In a junction 9 the hose going to an absorber joins. At connection dismantle it is necessary to replace a sealing ring being behind it 11 round sections;
- Connection 10 is connected through a hose with the device of heating of let in air;
- The potentiometer 12 throttle заслонки (a designation on electric schemes — G69) is not subject to adjustment. If it began to work unreliably it is necessary to replace the bottom part of an injector of system of injection.



Back on page
5.3. Adjustment of idling and the maintenance WITH
On the following page
5.4.1. Check of the device of heating of let in air