Procedure
When an oil leak is detected, check the areas listed below
Scheme 748
Scheme 749
Scheme 750
Scheme 751
- Oil patch by crankshaft position sensor. Remove the crankshaft position sensor. Clean the sealing surface and fit a new O-ring greased with Petrolatum, Kluber Syntheso Pro AA2. Fit the crankshaft position sensor
- Oil patch by the oil cooler intake and outlet. A banjo screw (part no. 59 58 095) has been developed. This should be used with an aluminium washer (part no. 46 21 413). The new screw is fitted to all engines from engine number B308EE003723200.
- Oil patch by the oil cooler seal with the cylinder block. Remove the oil cooler. Clean the sealing surfaces on the cylinder block and cooler cover and apply TB 1217F (part no. 47 73 594) to the sealing surfaces. This new seal was introduced into production from engine number B308EE003685986. It is difficult to detect the origin of leaks 2 and 3 without using an endoscope, using a tracing agent added to the oil or removing the intake manifold.
- Oil patch by the cover on the cylinder block. Clean the sealing surface, fit a new O-ring (part no. 91 98 615). Use Vaseline, non-acidic to secure the O-ring and ensure it remains in its groove. The new O-ring was introduced as from B308EE002577279. Tighten the cover. Tightening torque 15 Nm (11 lbf ft) Check also that the tightening torque of the threaded pipe is correct. Tightening torque: 20 Nm (15 lbf ft)
- Oil patch by the oil return pipe from the turbo to the oil pan. Two possible areas: The flange at the turbo outlet and the O-ring seal at the oil pan. If there is a leak, the entire oil return pipe must be changed along with the gasket and O-ring (part no. 91 85 455, 91 07 582 and 79 85 708). Check that the oil return pipe mates well with the oil pan. If not, slacken the hose clip, adjust the pipe and tighten the clip. The oil return pipe has been rectified for all cars since MY02. After remedial action, clean the engine from oil and dirt and test drive to check that the leak has been rectified.
Scheme 752
| 9000 | 900 -M93 | 900/9-3 | 9-5 | 9-3 (9440) |
|---|---|---|---|---|
| X | X | X | X | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (PLASTIGAUGE)
Scheme 753
| 9000 | 900 -M93 | 900/9-3 | 9-5 |
|---|---|---|---|
| X | X | X | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (OIL PAN STAND)
Scheme 754
| 9000 | 900 -M93 | 900/9-3 | 9-5 |
|---|---|---|---|
| X | X | X | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (VALVE SEAT CUTTER)
Scheme 755
| 9000 | 900 -M93 | 900/9-3 | 9-5 | 9-3 (9440) |
|---|---|---|---|---|
| X | X | X | X | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (FLOOR STAND)
Scheme 756
| 9000 | 900 -M93 | 900/9-3 | 9-5 |
|---|---|---|---|
| X | X | X | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (AXLE)
Scheme 757
| 9000 | 900 -M93 | 900/9-3 | 9-5 | 9-3 (9440) |
|---|---|---|---|---|
| X | X | X | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (MAGNETIC TOOL)
Scheme 758
| 9000 | 900 -M93 | 900/9-3 | 9-5 |
|---|---|---|---|
| X | X | X | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (LIFTING SLING)
Scheme 759
| 9000 | 900 -M93 | 900/9-3 | 9-5 |
|---|---|---|---|
| X | X | X | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (VALVE STAND)
Scheme 760
| 9000 | 900 -M93 | 900/9-3 | 9-5 |
|---|---|---|---|
| X | X | X | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (VALVE SEAT CUTTERS)
Scheme 761
| 9000 | 900 -M93 | 900/9-3 | 9-5 |
|---|---|---|---|
| X | X | X | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (BELT-TENSION METER)
Scheme 762
| 9000 | 900-M93 | 900/9-3 | 9-5 |
|---|---|---|---|
| X | X | X | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (VALVE GUIDE SEAL PLIERS)
Scheme 763
| 9000 | 900 -M93 | 900/9-3 | 9-5 |
|---|---|---|---|
| X | X | X | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (COMPRESSED AIR ADAPTER)
Scheme 764
| 9000 | 900 -M93 | 900/9-3 | 9-5 | 9-3 (9440) |
|---|---|---|---|---|
| M94 | X | X | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (ENGINE HOLDER)
Scheme 765
Group: Engine, Manual gearbox
| 9000 | 900 -M93 | 900/9-3 | 9-5 | 9-3 (9440) |
|---|---|---|---|---|
| X | X | X | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (LIFTING BEAM)
Scheme 766
| 9000 | 900 -M93 | 900/9-3 | 9-5 | 9-3 (9440) |
|---|---|---|---|---|
| X | X | X | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (FLYWHEEL LOCKING ATTACHMENT)
Scheme 767
| 9000 | 900 -M93 | 900/9-3 | 9-5 | 9-3 (9440) |
|---|---|---|---|---|
| M95 | 900 | X | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (REAR CRANKSHAFT SEAL FITTING KIT)
Scheme 768
| 9000 | 900 -M93 | 900/9-3 | 9-5 |
|---|---|---|---|
| M95 | 900 | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (FRONT CRANKSHAFT SEAL ASSEMBLY TOOL)
Scheme 769
| 9000 | 900 -M93 | 900/9-3 | 9-5 |
|---|---|---|---|
| M95 | 900 | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (CAMSHAFT SEAL ASSEMBLY TOOL)
Scheme 770
| 9000 | 900 -M93 | 900/9-3 | 9-5 |
|---|---|---|---|
| M95 | 900 | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (REAR CRANKSHAFT SEAL ASSEMBLY TOOL)
Scheme 771
| 9000 | 900-M93 | 900/9-3 | 9-5 | 9-3 (9440) |
|---|---|---|---|---|
| M95 | 900 | X | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (REAR CRANKSHAFT SEAL FITTING TOOLS)
Scheme 772
| 9000 | 900 -M93 | 900/9-3 | 9-5 |
|---|---|---|---|
| M95 | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (CAMSHAFT BELT ADJUSTING WRENCH)
Scheme 773
| 9000 | 900-M93 | 900/9-3 | 9-5 |
|---|---|---|---|
| M95 | 900 | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (CAMSHAFT SPROCKETS AND DRIVE BELT ASSEMBLY KIT)
Scheme 774
| 9000 | 900-M93 | 900/9-3 | 9-5 |
|---|---|---|---|
| X | 900 | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (PROTECTIVE COLLAR)
Quantity: 12
Scheme 775
| 9000 | 900 -M93 | 900/9-3 | 9-5 |
|---|---|---|---|
| X | 900 | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (CYLINDER HEAD FIXTURE)
Scheme 776
| 9000 | 900-M93 | 900/9-3 | 9-5 |
|---|---|---|---|
| M95 | 900 | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (CRANKSHAFT BELT PULLEY COUNTERSTAY)
Scheme 777
| 9000 | 900-M93 | 900/9-3 | 9-5 |
|---|---|---|---|
| X | X | X | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (VALVE STEM GASKET FITTING TOOL)
Scheme 778
| 9000 | 900-M93 | 900/9-3 | 9-5 |
|---|---|---|---|
| X | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (VALVE GUIDE REAMER)
Scheme 779
| 9000 | 900 -M93 | 900/9-3 | 9-5 |
|---|---|---|---|
| X | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (VALVE SEAT CUTTER)
Scheme 780
| 9000 | 900 -M93 | 900/9-3 | 9-5 |
|---|---|---|---|
| X | X | X | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (VALVE SEAT CUTTER - 31MM)
Scheme 781
| 9000 | 900 -M93 | 900/9-3 | 9-5 |
|---|---|---|---|
| M95 | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (PISTON FITTING TOOL)
Scheme 782
| 9000 | 900 -M93 | 900/9-3 | 9-5 | 9-3 (9440) |
|---|---|---|---|---|
| X | X | X | X | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (STRAP)
Scheme 783
| 9000 | 900 -M93 | 900/9-3 | 9-5 | 9-3 (9440) |
|---|---|---|---|---|
| X | X | X | X | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (WEDGE)
Scheme 784
| 9000 | 900 -M93 | 900/9-3 | 9-5 |
|---|---|---|---|
| X | X | X | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (VALVE SPRING COMPRESSOR)
Scheme 785
| 9000 | 900 -M93 | 900/9-3 | 9-5 | 9-3 (9440) |
|---|---|---|---|---|
| X | X | X | X |
SPECIAL TOOL COMPATIBILITY DESCRIPTIONS (HOLDER)