Removal and Replacement

WM 150520 Removing and installing camshafts on V6 DFI engines

Tools





Technical values





Preliminary work

1. Partly remove the engine wire harness. -> 97522100 Removing wire harness for engine (V6) 975219 Removing and installing wire harness for engine
2. Remove bar ignition modules. -> 282020 Removing and installing DFI bar ignition modules Service and Repair
3. Remove intake-air distributor. -> 244619 Removing and installing DFI intake-air distributor - section on "Removing" Removal and Replacement
4. Remove drive belt. -> 137819 Removing and installing drive belt on V6 DFI engines - section on "Removing" Service and Repair
5. Remove belt tensioner. -> 137319 Removing and installing belt tensioner on DFI engines - section on "Removing" Service and Repair





Belt tensioner





6. Remove cylinder head cover (valve cover).-> 158219 Removing and installing cylinder head cover on V6 DFI engines Removal and Replacement
7. Remove upper timing-case cover. -> 153319 Removing and installing timing-case cover on V6 DFI engines - section on "Removing" Service and Repair
8. Set cylinder 1 to compression TDC. -> 150502 Checking the timing on V6 DFI engines Testing and Inspection
9. Remove the timing chain from the camshaft controllers and put it to one side.-> 158419 Removing and installing camshaft controller on V6 DFI engines Service and Repair
10. Remove camshaft controllers. -> 158419 Removing and installing camshaft controller on V6 DFI engines Service and Repair
11. Remove timing chain housing.





Removing timing chain housing





Removing camshafts

Information

- Always counter camshafts at the hexagon because the camshaft guide can break!

Information

- The numbers of the bearing covers on the outlet camshaft B are even numbers, counting from the timing chain.

- The numbers of the bearing covers on the inlet camshaft A are uneven numbers, counting from the timing chain.

- The bearing cover numbers can be read from the inlet side.

- Corners of the bearing covers are facing outwards.

- Bearing covers no. 7 and 8 are thrust bearings and guide bearings.

1. Remove camshafts.





Overview of cylinder head on V6 DFI engine





1.1. Remove intake camshaft. Loosen the hexagon nuts on the bearing covers alternately and crosswise. Note the sequence in which the bearing covers are removed.
1.1.1. Remove bearing covers 1 and 13.
1.1.2. Remove bearing covers 3 and 11.
1.1.3. Remove bearing cover 7.
1.1.4. Remove bearing covers 5 and 9.
1.2. Remove outlet camshaft. Loosen the hexagon nuts on the bearing covers alternately and crosswise. Note the sequence in which the bearing covers are removed.
1.2.1. Remove bearing covers 2 and 14.
1.2.2. Remove bearing covers 4 and 12.
1.2.3. Remove bearing cover 8.
1.2.4. Remove bearing covers 6 and 10.

Installing camshafts

1. Install camshafts.





Overview of cylinder head on V6 DFI engine





1.1. Insert the camshafts into the cylinder head in such a way that the camshaft guide T10068A fits into the slots on the intake and outlet camshafts at the same time.-> 150520 Removing and installing camshafts on V6 DFI engines





Installation position of camshaft









1.2. Install intake camshaft. Note the sequence in which the bearing covers are installed.
1.2.1. First fit bearing covers 5 and 9 and tighten the hexagon nuts alternately and crosswise.
1.2.2. Repeat the process for bearing covers 1 and 13.
1.2.3. Repeat the process for bearing cover 5.
1.2.4. Repeat the process for bearing covers 3 and 11.
1.3. Install outlet camshaft. Note the sequence in which the bearing covers are installed. Use the same torque and torque angle as for the intake camshaft.
1.3.1. First fit bearing covers 6 and 10 and tighten the hexagon nuts alternately and crosswise.
1.3.2. Repeat the process for bearing covers 2 and 14.
1.3.3. Repeat the process for bearing cover 8.
1.3.4. Repeat the process for bearing covers 4 and 12.

Subsequent work

1. Install timing chain housing.





Installing timing chain housing





2. Install camshaft controllers. -> 158419 Removing and installing camshaft controller on V6 DFI engines Service and Repair
3. Fit timing chains. -> 153519 Removing and installing timing chains on V6 DFI engines Service and Repair





Component overview of timing chains





3.1. Install chain tensioner. -> 153619 Removing and installing chain tensioner on V6 DFI engines Service and Repair
4. Check the timing. -> 150502 Checking the timing on V6 DFI engines Testing and Inspection
5. Fit upper timing-case cover. -> 153319 Removing and installing timing-case cover on V6 DFI engines Service and Repair





Removing and installing vacuum pump





6. Install cylinder head cover. -> 158219 Removing and installing cylinder head cover on V6 DFI engines Removal and Replacement





Removing and installing valve cover seal





7. Install belt tensioner. -> 137319 Removing and installing belt tensioner on DFI engines Service and Repair





Belt tensioner





8. Fit and tension the drive belt.
-> 137819 Removing and installing drive belt Service and Repair





Fitting sequence





9. Install bar ignition modules. -> 282020 Removing and installing DFI bar ignition modules Service and Repair





Removing and fitting ignition coils and spark plugs





10. Install intake-air distributor. -> 244619 Removing and installing DFI intake-air distributor Removal and Replacement
11. Fit engine wire harness. -> 97522100 Removing wire harness for engine (V6) 975219 Removing and installing wire harness for engine
11.1. Clip in engine wire harness at the rear engine housing using the retaining clips -arrows-.





Clipping in engine wire harness at the rear





11.2. Connect engine wire harness to the oil/water heat exchanger.





Clipping in engine wire harness at the front left