Left and Right Timing Chain Covers
Left and Right Timing Chain Covers
Special tools, testers and auxiliary items required
• Hand drill with plastic brush attachment
• Protective glasses
• Sealant
Removing
• All cable ties which are opened or cut open when removing, must be replaced in the same position when installing.
- Remove rear engine cover - arrows -.
- Remove front engine cover - arrows -.
Left timing chain cover:
- Remove coolant expansion tank - arrow -.
- Disconnect electrical connection from Engine Coolant Level (ECL) Warning Switch (F66) at bottom of coolant reservoir and set aside coolant reservoir with coolant hoses - 1 - and - 2 - connected.
- Remove electrical harness connectors - 1 - and - 2 - from bracket.
- Free up wiring harness.
- Remove nuts and remove left bracket for harness connectors from bulkhead.
• Place a rag under oil filter housing to catch escaping engine oil.
- Remove cap - arrow - for oil filter housing.
- Remove oil filter element.
CAUTION!
Crankcase ventilation must not be removed.
- Remove left cylinder head cover and lay aside with crankcase ventilation hose connected. Refer to => [ Left Cylinder Head Cover ] Left Cylinder Head Cover.
- Disconnect electrical harness connectors.
1. Camshaft position (CMP) sensor 2 (G163)
2. Camshaft Adjustment Valve 2 (N208)
3. Camshaft Adjustment Valve 2 (exhaust) (N319)
4. Camshaft position (CMP) sensor 4 (G301)
- Remove bolts - arrows - and separate electrical connections at ignition coils.
- Set electrical wiring harness aside.
- Disconnect electrical harness connectors - 1 to 3 -.
- Remove nut - arrow -.
- Remove retainer for connection - 3 -.
- Remove double-bolt lying beneath.
- Remove retainer for connections - 1 - and - 2 -.
- Remove bolts - 1 to 8 - and remove left timing chain cover.
Right timing chain cover:
- Disconnect check valve - 1 - from connection at air duct hose.
- Remove air duct hose, thereby loosening hose clamp - 2 - and opening clips - arrows -.
- Remove pin from spreader clips - arrow -.
- Remove air filter housing.
- Remove nuts and remove right bracket for harness connectors - 1 - and - 2 - from bulkhead.
- Disconnect electrical harness connectors.
1. Camshaft Adjustment Valve 1 (exhaust) (N318)
2. Camshaft Position (CMP) sensor (G40)
3. Intake Manifold Runner Position Sensor (G336 )
4. Camshaft position (CMP) sensor 3 (G300)
- Remove bolts - arrows - and separate electrical connections at ignition coils.
- Set electrical wiring harness aside.
- Separate electrical connector - 1 -.
- Remove bolt - arrow - and remove retainer for connection.
- Remove bolts - 1 to 8 - and remove right timing chain cover.
Installing
• During installation, all cable ties must be re-installed at the same location.
• Secure all hose connections with hose clamps appropriate for the model.
CAUTION!
Wear safety glasses.
- Using e.g. a rotating plastic brush, remove sealant residue on covers for timing chain and on cylinder block and head.
CAUTION!
Make sure that no sealant residue enters the engine.
- Clean sealing surfaces so they are completely free of any oil or grease.
- Cut tube nozzle at front marking (jet dia. approximately 1 mm).
• Covers for timing chain must be installed within 5 minutes after applying sealant.
- Apply sealant bead - arrow -, as shown in illustration, on clean sealing surfaces of left cover for timing chain.
• The groove of sealing surface must be completely filled with sealant.
• The sealant bead must stand 1.5 to 2.0 mm above the sealing surface.
- Position left timing chain cover and tighten bolts in sequence - 1 to 8 -.
- Apply sealant bead - arrow -, as shown in illustration, on clean sealing surfaces of right cover for timing chain.
• The groove of sealing surface must be completely filled with sealant.
• The sealant bead must stand 1.5 to 2.0 mm above the sealing surface.
- Position right timing chain cover and tighten bolts in sequence - 1 to 8 -.
Further installation is in reverse order of removal, noting the following:
- Check oil level.
Tightening Specifications
