Removing and Installing Oil Extraction Pumps - Engine Installed

Removing and installing oil extraction pumps - Engine installed








Tools

Oil extraction pump on cylinder head 1 - 3 (flywheel side)
Removal

Note;
- The oil extraction pump can only be removed after the cylinder head cover has been taken off.

1. Remove left rear wheel.





2. Remove exhaust manifold.





3. Remove rear muffler. Undo three hexagon nuts.





3.1. Undo clamping sleeve and remove rear muffler.





4. Remove holder for rear muffler.





4.1. Undo upper hexagon-head bolts using a flexible-head socket wrench (wrench size 13). Detach holder.
5. Remove shield of cylinder head cover.





6. Pull off both closure caps of cylinder head 1 - 3 (pulley side).
Diagram shows lower closure cap
6.1. Turn shop-made extractor into centre of piercing point of closure cap and pull off the cap.
7. Remove ignition coils and spark plugs.
8. Pull off oil protection tubes.





9. Fit special tool, holding-down device 9634, on the cylinder head. Fasten holding-down device with a hexagon-head bolt M8 x 30.

Note;
- In order to prevent damage to the camshafts or bearing saddles, the holding-down device must be fit before the cylinder head cover is detached.

10. Separate plug connection of the tensioning element (VarioCam).
11. Unscrew two hexagon-head bolts (M6 x 20) and remove closure cap from the tensioning element (VarioCam).
12. Undo the fastening screws of the oil extraction pump.





13. Remove cylinder head cover. Loosen the hexagon-head bolts from the outside to the inside. Detach the cylinder head cover by knocking it gently with a plastic hammer, and press off carefully.





14. Remove oil extraction pump.

Installation
1. Lightly grease the new sealing ring and lay it in the oil extraction pump.





2. Align oil extraction pump driver and fit oil extraction pump in the correct position. The arrow for the direction of rotation or the marking "1 - 3" must face the crankcase. Insert new micro-encapsulated hexagon-head bolts loosely in the oil extraction pump.
Engine removed in drawing for clearer illustration





3. Prepare cylinder head cover for installation: Clean sealing surface of the cylinder head and cylinder head cover very carefully. Apply a silicone bead to the cylinder head cover.
3.1. Carefully place the cylinder head cover in the correct position so that the sealing bead is not damaged. Screw two studs or centering pins into the corners of the cylinder head as centering aids. Tightening torque for hexagon-head bolts 13 Nm (10 ft. lbs.). Observe tightening sequence. Immediately remove silicone material emerging in the area of the camshaft closure cap.
4. Tighten micro-encapsulated hexagon socket head bolts of oil extraction pump. Tightening torque: 10 Nm (7.5 ft. lbs.)
5. Fit camshaft closure cap dry.
6. Fit closure cap on tensioning element (VarioCam).
Tightening torque: 10 Nm (7.5 ft. lbs.)
7. Fit oil protection tubes, spark plugs, ignition coils, holder for rear muffler and rear muffler.
8. Fit exhaust manifold with new gasket. Fit the gasket in the correct position between the exhaust manifold and cylinder head. The bent-up sheetmetal tab must point upward toward the cylinder head. Tightening torque for hexagon-head bolts 25 Nm (18.5 ft. lbs.)
9. Fit right rear wheel. Tightening torque 130 Nm (96 ft. lbs.).

Oil extraction pump of cylinders 4 - 6 (pulley side)
Removal
1. Unscrew four fastening screws and remove the oil extraction pump.

Installation
1. Lightly grease the new sealing ring and lay it in the oil extraction pump.





2. Align oil extraction pump driver and fit oil extraction pump in the correct position. The arrow for the direction of rotation or the marking "4 - 6" must face the crankcase.
3. Tighten micro-encapsulated hexagon socket head bolts. Tightening torque 10 Nm (7.5 ft. lbs.)