Timing Cover: Service and Repair

Front sealing flange and oil pump drive chain, removing and installing

Removing
- Remove ribbed belt.
- Remove toothed belt.
- Drain engine oil.

Note: Use a separate container to collect the engine oil.





- Remove lower section of oil pan.
- Unbolt cover plate for oil pump sprocket (-2- ).

Note:
^ When loosening bolt -2- securing cover plate, counter-hold at welded nut.
^ When installing, make sure that the plate engages in position -arrows-.





- Unbolt both oil supply pipes -1- and -3 from upper section of oil pan and pull longer of two pipes away downward.





- Unscrew 4 bolts from upper section of oil pan.





- Remove following components before unbolting front sealing flange:
1. Tensioning roller for toothed belt: 20 Nm
2. Idler wheel: 45 Nm
3. Toothed belt tensioner: 10 Nm
4. Lever for toothed belt tensioner: 20 Nm





- Unbolt front sealing flange and take off gasket for front sealing flange M6 bolts: 10 Nm Me collar bolt: 30 Nm.
Replacing oil pump drive chain





- Unscrew bolt securing chain sprocket to oil pump using Torx T45, and pull sprocket off oil pump.





- Remove oil pump together with shorter oil supply pipe.
- Take out oil pump sprocket remover drive chain from crankshaft.
Removing and installing chain sprocket on crankshaft, Refer to Crankshaft Engine, Service and Repair.

Installing
Install in the opposite order to removing. When installing, note the points:
- Remove any residues of sealant on front of oil pan or engine block, if necessary.
- Clean sealing surfaces; ensure that they are free of oil and grease.

Note: The front sealing flange must be installed within 5 minutes of applying silicone sealant D 454 300 A2.

Note: Do not apply any sealant on sealing surface -A- of the cylinder block.





- After fitting gasket on sealing surface -A-, apply a small quantity of sealant to joints between two arrows -left and right-.





- Cut off nozzle of tube at front marking (diameter of nozzle approximately 3 mm).
^ Thickness of sealant bead: 2 ... 3 mm

Note: The bead of sealant must not be thicker than 3 mm, as otherwise excess sealant may enter the oil pan and block the strainer in the oil intake pipe.





- Make sure sealing surface is clean and then apply silicone sealant on sealing surface of front sealing flange, as shown in illustration. (The illustration shows where the bead of sealant is applied)
- Use fitting sleeve 3202/1 to install sealing flange. Locate sealing flange in position immediately and tighten all 4 bolts in oil pan hand-tight initially.
- Tighten bolts securing sealing flange.

Front sealing flange tightening torque:
M6: 10 Nm
M8: 20 Nm
4 bolts in sump: 10 Nm