Timing chain drive diagram (timing) and steps of the valve timing setting procedure.
Installation position of camshafts «40°after TDC of the piston of the first cylinder». All four copper plates of the chain line up with the sprocket marks at the same time.
1 - Groove in the camshaft; 2 - Mark on the right camshaft sprocket; 3 - Mark on the left camshaft sprocket; 4 - Mark on the balancing shaft sprocket; 5 - Groove in the crankshaft; 6 - Copper plate
Special tools:
- Cover for fixing the camshaft - No. 112589054000.
- Key for fixing the camshaft - No. 112589000100.
- The key for the camshaft sprocket bolt is No. 112589010300.
- Tool for fixing the left camshaft - No. 112589013200.
- Tool for fixing the right camshaft - No. 112589003200.
- Tool for fixing the crankshaft pulley - No. 112589004000.
- Flywheel locking tool - No. 112589034000.
- Set for separating the links of the gas distribution chain - No. 602589024000.
- Timing chain separator (element 1) - № 602589023300.
- Timing chain separator (element 2) - № 602589056300.
- Timing chain separator (element 3) - № 602589056301.
- Attachment for docking chain links - No. 602589003900.
- A set of dies for joining chain links - No. 103589016300.
- Tool box - No. 602589009800.
- Devices for fixing the chain on the camshaft sprockets - No. 112589044000.
- Viscous clutch pulley holder - No. 113589004000.
- The key for fixing the viscous coupling is No. 113589000100.
General Precautions
1. Disconnect the negative cable from the battery.
2. Turn out spark plugs for the purpose of simplification of cranking of the engine.
3. Unless otherwise noted, turn the engine in the normal direction.
4. Familiarize yourself with the torque requirements for threaded connections.
5. If equipped, mark the position of the CKP sensor before removing it.
6. Do not rotate the crankshaft using camshaft drive sprockets or devices.
7. Do not turn the crankshaft or camshaft with the timing chain removed.
Valve Timing Procedures
1. Bring the piston of the first cylinder [1] to position 40°after TDC.
2. Make sure that the parallel grooves of both camshafts are correctly aligned with the cut of the cylinder head [2].
3. Install locking devices [3] on the camshafts.
4. Check that the alignment marks on the balancing shaft [4] are correctly positioned.
5. Before proceeding with the repair procedures, remove the tensioner assembly [5].
Note. By setting the No. 1 piston to 40°after TDC, the camshafts can rotate without the risk of the valves coming into contact with the piston crowns.
6. When assembling, bring the piston of the first cylinder to a position of 40°after TDC and achieve the alignment of the copper-plated chain links with:
- Alignment marks of sprockets of both camshafts [6];
- With alignment mark on the balancing shaft sprocket [7];
- With key and crankshaft alignment mark [8].
Note. Upon completion of the installation, the alignment of the copper-plated chain links should occur every fourteenth turn.
Replacing the gas distribution chain
1. Remove the right camshaft rocker shaft assembly with bearing caps;
2. Loosely install the camshaft fixing cover [9] (tool no. 112589054000);
3. Install the chain fixing devices on the camshaft sprockets (tool no. 112589044000);
4. Using the tools from the above list, connect the new chain to the old one on the right row of cylinders, - to put the chain on the sprockets, turn the crankshaft.
Note. Bolts of fastening of assemblies of axes of yokes (M7 x 84 mm) are not reusable and must be replaced.
The balancing shaft is removed in the following order:
1. Insert a suitable locking rod into the counterweight on the rear stud of the shaft [11];
2. Turn out a fixing bolt and remove a counterbalance;
3. Remove the balance shaft from the front;
4. Upon completion of repair work, install the tensioner.
5. Be sure to lubricate the crankshaft pulley center bolt during assembly.
Note. Do not block the flywheel/drive plate when removing/installing the crankshaft pulley bolt.