Ignition Timing: Adjustments

Setting the timing on V6 DFI engines

Preliminary work

Information:
^ Always check all components, such as timing chains, sprockets, locking pins and chamfers for wear or damage. Always replace faulty components.
^ Always replace all fastening screws for the sprockets.
^ Before removing the timing chains, mark the running direction with a colored pen.
^ Maintain the same timing chain running direction during re-installation.
^ Never use a prick punch or file for marking.

Information:
Fix camshaft in place
^ To loosen the fastening screws on the camshaft controller, counter the relevant camshaft with an open ended wrench (a/f 27).
^ To prevent damage, remove the camshaft guide.

1. Remove all engine compartment covers.
2. Remove engine.
3. Remove transmission.
3.1. For vehicles with automatic transmission, refer to Removing and Installing Transmission.
3.1.1. Remove flywheel.
3.2. For vehicles with automatic transmission, refer to Removing and Installing Transmission.
3.2.1. Remove drive plate for torque converter.
4. Remove intake-air distributor.
5. Remove cylinder head cover.
6. Remove the timing-case cover at the top and bottom.
7. Set crankshaft to compression TDC for cylinder 1.
8. Remove camshaft controllers.
9. Remove timing chain -3-.
10. Remove drive chain -17-.

Information

Component overview





Component overview of timing chains

1 - Timing chain housing
2 - Fastening screw
3 - Timing chain
4 - Outlet camshaft controller
5 - Sealing ring
6 - Oil pump
7 - Fastening screw
8 - Tensioning rail
9 - Chain tensioner for timing chain
10 - Sealing ring
11 - Pin
12 - Sprocket for drive chain
13 - Drive wheel for timing chain
14 - Fastening screw
15 - Chain tensioner for drive chain
16 - Drive wheel for drive chain
17 - Drive chain
18 - Guide rail for drive chain
19 - Bolt
20 - Fastening screw for timing-chain guide rail
21 - Fastening screw for timing-chain guide rail
22 - Fastening screws for camshaft controllers
23 - Guide rail for timing chain
24 - Drive gearwheel for high-pressure pump
25 - Intake camshaft controller
26 - Valve for outlet camshaft controller
27 - Valve for intake camshaft controller
28 - Guide rail

Setting the timing

1. Set the timing
1.1. Position the oil pump shaft -1- with the flat side up so that it is horizontal to the marking -2-





Oil pump

2. Install sprocket for oil pump
3. Install drive chain.
4. Install drive wheel for timing chain.
5. Install timing chain.
6. After you have fitted the timing chain, turn the crankshaft twice and check the timing.

Subsequent work

Information:
Fix camshaft in place
^ To loosen the fastening screws on the camshaft controller, counter the relevant camshaft with an open ended wrench (a/f 27).
^ To prevent damage, remove the camshaft guide.

1. Install the cylinder head cover.
2. Install intake-air distributor.
3. Install transmission.
3.1. For vehicles with manual transmission, refer to Removing and installing transmission
3.1.1. Install flywheel.
3.2. For vehicles with automatic transmission, refer to Removing and installing transmission
3.2.1. Remove drive plate for torque converter.
4. Install engine.
5. Install all engine compartment covers.