Examination
1. Disconnect the ground cable from the battery (refer to Chapter Engine electrical equipment for Scenic models).
Warning: If the car radio in your car is coded, make sure you know the code before disconnecting the battery.
2. Set the handbrake, then jack up the front right corner of the car until the wheel is off the ground. Support the car with axle stands and engage 5th gear. This way, the engine crankshaft can be easily turned by rotating the right wheel. Alternatively, turn the engine crankshaft with a wrench on the crankshaft pulley bolt.
3. Rotate the crankshaft to set piston No.1 to TDC on the compression stroke and insert the dowel pin to check the crankshaft position as described in Chapter Engine repair.
4. Cover the generator with a plastic bag or cloth.
Design of the gear wheel type " MAA"
1 - Central bolt - left-hand thread; 2 - Pulley plate; 3 - Pulley nut*; 4 - Toothed pulley frame; 5 - Injection timing correction ring; 6 - Angle adjustment ring; 7 - Central bolt locking spring; 8 - Pulley hub; A - Counterclockwise movement is the reason for installing the tool; B - Transverse movement of rings; C - Clockwise rotation, manifested on the pump shaft; a - Thread for "d"; b - Straight recesses for guide protrusions "e"; c - Grooves for tool pins; d - Thread for "a"; e - Guide tabs; f - Beveled guides for "h"; h - Beveled guides for "f"
*Non-ferrous metal nut with built-in washer
Models with F8Q engine - Lucas fuel pump
1. Now you will need a micrometer with a dial and a special probe (renault Mot tool. 1079) (refer to the accompanying illustration).
2. Remove the inspection plug from the top of the pump and remove the sealing washer.
3. Insert the probe into the hole so that its tip rests on the mounting protrusion of the rotor (refer to the illustrations).
4. Place the dial micrometer on the fuel pump body. The micrometer should be positioned on the probe so that its plunger is at the middle of the stroke.
5. Remove the dowel pin, then rotate the crankshaft approximately a quarter turn counterclockwise and reset the micrometer to zero. Check that the probe is positioned on the sealing washer surface of the dowel hole.
6. Slowly turn the crankshaft clockwise (returning the engine to TDC), until the locating pin is seated again.
7. Read the micrometer reading, the result obtained should match the value indicated on the label on the pump cover.
8. If the result obtained does not correspond to the data provided, proceed as follows.
9. Unscrew and remove the toothed drive belt cover from the fuel pump toothed wheel.
10. Remove the probe and lock the pump pulley with the special tool Renault Mot. 1200-01 (refer to Section Removal and installation the fuel pump).
11. Fuel pump pulley type "MAA" (Micrometer Angle Adjustment) consists of a hub/plate and a toothed frame, which are fastened together by a central bolt. The plate has three holes for a special tool (Renault Mot. 1358 for the "MAA" pulley and the "HTD" toothed drive belt or Mot. 1358-01 for the "HTD2" toothed drive belt), which is used to rotate the pump shaft. But first the central bolt is loosened using the Renault Mot. 1359 tool (refer to illustration).
12. Install the special tool into the three holes and turn the plate so that the three pins of the tool enter the three grooves in the timing ring (refer to the accompanying illustration).
13. Now rotate the plate tool assembly clockwise until the tool locks. This will set the pulley in position to begin adjustment.
14. Remove the pulley locking tool and rotate the crankshaft 2 turns (setting piston #1 back to TDC) until the tool can be reinserted.
15. Now turn tool Mot. 1358-01 counterclockwise until the correct injection torque is obtained on the micrometer. If the injection torque exceeds the required value during the setting process, turn the tool back 0.7 mm below the value before repeating the adjustment.
16. Remove the special tool, then tighten the center bolt (left hand thread) tightening torque of 20 Nm using tool Mot. 1359.
17. Remove the locating pin.
18. Fit tool Mot. 1200-02 to lock the pulley. Turn the crankshaft manually counterclockwise until the locking tool touches the pulley.
19. Tighten the central bolt to a torque of 90 Nm using tool Mot. 1359.
20. Remove the pulley locking tool, turn the crankshaft 2 revolutions and check the pump injection timing again.
Caution! If the correct injection timing cannot be set, check the adjustment of the camshaft gears and the fuel pump (refer to the illustration "Position of the fuel injection pump gear"). The positioning is considered correct if all timing marks are well aligned and if there are exactly 30 teeth from the mark on the camshaft gear to the mark on the fuel pump gear.
21. Once the injection timing is set correctly, remove the micrometer. Remove the probe from the hole and install the plug with the sealing washer.
22. Connect the injector fuel lines to the pump, securely tightening the union nuts.
23. Remove the plastic bag covering the generator.
24. Lower the vehicle to the ground and connect the ground cable to the battery.
25. Fill and bleed the fuel system (refer to Section Filling and bleeding the fuel system).
26. Check and, if necessary, adjust the idle speed and deceleration speed as described in Section Checking and adjusting idle speed and deceleration speed.
Engine F8Q 620 - Bosch pump
1. You will need a micrometer with a dial, a special probe and a nozzle that screws into the hole at the end of the pump (renault Mot tool. 856) (refer to the accompanying illustration).
2. Loosen the union nuts securing the injector tubes to the high-pressure fuel pump. Close the open unions to prevent dirt from entering.
3. Unscrew the plug on the left side of the fuel pump, between the injector tube connections.
4. Insert the probe and connect it to the micrometer placed directly in front of the hole.
5. Remove the dowel pin and rotate the crankshaft approximately a quarter of a turn counterclockwise, then reset the micrometer reading to zero. To do this, apply the handbrake, then jack up the front right corner of the car until the wheel is off the ground. Support the car with axle stands and engage 5th gear. This way the engine crankshaft can be easily turned by rotating the right wheel. Alternatively, turn the engine crankshaft with a spanner on the crankshaft pulley bolt.
6. Slowly turn the crankshaft clockwise (setting the engine back to TDC), until the locating pin can be reinserted.
7. Read the micrometer reading; the result obtained must correspond to the data given in Specifications. Please note that the injection point is also marked on the pump throttle lever.
8. If the result obtained does not correspond to the data provided, proceed as follows:
9. Loosen the three bolts of the right pump support and the nuts of the left pump support, then slowly rotate the pump body until you find the position where the micrometer shows the value specified in Specifications value. Then tighten the fastening nuts and bolts, watching for any changes in the readings on the micrometer.
10. Remove the dowel pin and rotate the crankshaft one and three-quarter turns clockwise. Make sure the micrometer reads zero.
11. Slowly turn the crankshaft clockwise (setting piston No.1 to TDC) until the timing pin can be reinserted. Recheck the injection timing value.
12. If adjustment is necessary, loosen the pump mounting nuts and bolts and repeat the steps described in the paragraphs above.
13. Having set the injection moment correctly, remove the micrometer, probe and install the plug, clamping it with the given Specifications force. Tighten the three right pump support bolts and the left pump support nuts to the specified Specifications effort.
14. Connect the fuel injector tubes to the pump and tighten the union nuts securely.
15. Remove the plastic bag from the generator.
16. Remove the locating pin.
17. Lower the vehicle to the ground and connect the ground cable to the battery.
18. Fill and bleed the fuel system as described in Section Filling and bleeding the fuel system.
19. Check and, if necessary, adjust the idle speed and deceleration speed as described in Section Checking and adjusting idle speed and deceleration speed.
F9Q Engines - Bosch Pump
Note: To adjust the injection timing on these engines, many special Renault tools are required. Therefore, if you do not have the tools, contact a Renault service center to adjust the injection timing.
1. You will need a micrometer, a special probe and a nozzle that screws into the hole at the end of the pump (renault Mot tool. 856) (refer to illustration).
2. Remove the crankcase ventilation oil separator.
3. Loosen the union nuts securing the injector tubes to the high-pressure fuel pump. Close the open unions to prevent dirt from entering.
4. Unscrew the plug on the left side of the fuel pump, between the injector tube connections.
5. Insert the probe and connect it to the micrometer placed directly in front of the hole.
(Source is located on the website: RenaultBook)
6. Remove the dowel pin and rotate the crankshaft approximately a quarter of a turn counterclockwise, then reset the micrometer reading to zero. To do this, apply the handbrake, then jack up the front right corner of the car until the wheel is off the ground. Support the car with axle stands and engage 5th gear. This way the engine crankshaft can be easily turned by rotating the right wheel. Alternatively, turn the engine crankshaft with a spanner on the crankshaft pulley bolt.
7. Slowly turn the crankshaft clockwise (setting the engine back to TDC), until the locating pin can be reinserted.
8. Read the micrometer reading; the result obtained must correspond to the data given in Specifications. Please note that the injection point is also marked on the pump throttle lever.
9. If the result obtained does not correspond to the data provided, proceed as follows:
10. Disconnect the ground cable from the battery (refer to Chapter Engine electrical equipment for Scenic models), disconnect the wiring connector of the electronic control module, then unscrew and remove the module from the bracket.
11. Disconnect the two fuel hoses from the top of the fuel filter.
12. Disconnect the pump wiring harness at the main connector attached to the ECM bracket. Release the wiring from the mounting brackets and move it to the side.
13. Disconnect the electrical connector from the fuel heater on the filter.
14. Unscrew and remove the fuel filter assembly and the electronic control module bracket.
15. Unscrew and remove the fuel pump gear cover.
16. Install the fuel pump sprocket holding tool (Renault Mot. 1200) (refer to Section Removal and installation the fuel pump).
17. Fuel pump pulley type "MAA" (Micrometer Angle Adjustment) consists of a hub/plate and a gear rim which are secured together by a central bolt (left hand thread) (refer to the illustration "Design of the MAA type gear"). The plate has three holes for a special tool (Renault Mot. 1358-01), which is used to rotate the pump shaft. But first the central bolt is loosened using the Renault Mot. 1359 tool (refer to illustration).
18a. Install the special tool in the three holes and turn the plate so that the three pins of the tool enter the three grooves in the timing ring (refer to illustration).
18b. Please note that if tool Mot. 1358-01 is not available, tool Mot. 1358 can be converted by filing down three pins by 1.5 mm (refer to the accompanying illustration).
19. Now rotate the tool/plate assembly clockwise until the tool locks. This will set the pulley to the position to begin adjustment.
20. Remove the pulley locking tool and rotate the crankshaft 2 turns (setting piston #1 back to TDC) until the tool can be inserted again.
21. Now turn tool Mot. 1358-01 counterclockwise until the correct injection torque is obtained on the micrometer. If the injection torque exceeds the required value during the installation process, turn the tool back 0.7 mm below the value before repeating the adjustment.
22. Remove the special tool, then tighten the center bolt (left hand thread) tightening torque of 20 Nm using tool Mot. 1359.
23. Remove the locating pin.
24. Fit tool Mot. 1200-02 to lock the pulley. Turn the crankshaft manually counterclockwise until the locking tool touches the pulley.
25. Tighten the central bolt to a torque of 90 Nm using tool Mot. 1359.
26. Remove the pulley locking tool, turn the crankshaft 2 revolutions and check the pump injection timing again.
Caution! If the correct injection timing cannot be established, check the adjustment of the camshaft gears and the fuel pump (refer to the illustration "Position of the fuel injection pump gear"). The positioning is considered correct if all timing marks are well aligned and if there are exactly 30 teeth from the mark on the camshaft gear to the mark on the fuel pump gear.
27. Once the injection timing is set correctly, remove the micrometer. Remove the probe from the hole and install the plug with the sealing washer.
28. Install and connect the injector fuel lines and tighten the couplings.
29. Install the crankcase ventilation oil separator.
30. Install the timing belt cover onto the fuel pump timing belt.
31. Install the fuel filter and ECM bracket.
32. Connect the fuel supply and return pipes and hoses and the fuel filter heating system wiring.
33. Install the electronic control module and connect all electrical wiring to the pump.
34. Lower the vehicle to the ground and connect the ground cable to the battery.
35. Fill and bleed the fuel system as described in Section Filling and bleeding the fuel system.