Camshaft: Service and Repair
WM 150520 Removing and installing camshafts
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" Service and Repair
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
6. Remove cylinder head cover.-> 158219 Removing and installing cylinder head cover on V6 DFI engines Service and Repair
7. Remove upper timing-case cover. -> 153319 Removing and installing timing-case cover on V6 DFI engines - section on "Removing"
8. Set cylinder 1 to compression TDC.
9. Remove the timing chain from the camshaft controllers and set it aside. -> 158419 Removing and installing camshaft controllers on V6 DFI engines Service and Repair
10. Remove camshaft controllers. -> 158419 Removing and installing camshaft controllers on V6 DFI engines Service and Repair
11. Remove timing chain housing -2-. Loosen cheese head bolts -1-.
Timing chain housing
Removing camshafts
Component overview
Overview of cylinder head on V6 DFI engine
Removing camshafts
Information
- Always counter camshafts at the hexagon because the camshaft bar can break!
Information
- The numbers of the bearing covers on the outlet camshaft 3 are even numbers, counting from the timing chain.
- The numbers of the bearing covers on the intake camshaft 1 are uneven numbers, counting from the timing chain.
- The bearing cover numbers can be read from the intake side.
- Corners of the bearing covers are facing outwards.
- Bearing covers no. 7 and 8 are thrust bearings and guide bearings.
1. Remove camshafts.
1.1. Remove intake camshaft.
Loosen hexagon nuts on bearing covers in diagonally opposite sequence.
Note the sequence in which 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 hexagon nuts on bearing covers in diagonally opposite sequence.
Note the sequence in which 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 the camshafts.
1.1. Insert the camshafts into the cylinder head in such a way that the camshaft bar T10068A fits into the slots on the intake and outlet camshafts at the same time. -> 150520 Removing and installing camshafts on V6 DFI engines
Counter camshafts at the hexagon -arrows-.
Installation position of camshaft
1,3,5,7,9,11,13 Bearing covers on intake camshaft2,4,6,8,10,12,14Bearing covers on outlet camshaft
1.2. Install intake camshaft.
Note the sequence in which bearing covers are installed.
1.2.1. First fit bearing covers 5 and 9 and tighten the hexagon nuts in diagonally opposite sequence.
1.2.2. Repeat the process for bearing covers 1 and 13.
1.2.3. Repeat the process for bearing cover 7.
1.2.4. Repeat the process for bearing covers 3 and 11.
1.3. Install outlet camshaft.
Note the sequence in which 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 in diagonally opposite sequence.
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
Component overview
Component overview for timing chains
Subsequent work
1. Install timing chain housing -2-. Tighten cheese head bolts -1-.=> Tightening torque: 8 Nm (6 ftlb.)
Timing chain housing
2. Install camshaft controllers. -> 158419 Removing and installing camshaft controller on V6 DFI engines Service and Repair
3. Fit timing chains.
3.1. Install chain tensioner. -> 153619 Removing and installing chain tensioner on V6 DFI engines Service and Repair
4. Check the timing.
5. Fit upper timing-case cover. -> 153319 Removing and installing timing-case cover on V6 DFI engines
6. Install cylinder head cover. -> 158219 Removing and installing cylinder head cover on V6 DFI engines Service and Repair
7. Install belt tensioner. -> 137319 Removing and installing belt tensioner on DFI engines Service and Repair
8. Install drive belt.
-> 137819 Removing and installing drive belt Service and Repair
9. Install bar ignition modules. -> 282020 Removing and installing DFI bar ignition modules Service and Repair
10. Install intake-air distributor. -> 244619 Removing and installing DFI intake-air distributor Service and Repair
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 retaining clips -arrows-.
Clipping in engine wire harness at the rear
11.2. Connect engine wire harness to the oil/water heat exchanger and clip it in -arrows-.
Clipping in engine wire harness at the front left