Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Necessary preliminary work
- Remove ENGINE
- Mount engine on assembly stand
- Remove cylinder head. See LEFT CYLINDER HEAD and RIGHT CYLINDER HEAD .
- Remove HUB FOR VIBRATION DAMPER
- Removing LOWER TIMING CASE COVER
- Removing oil pan See 1113020 REMOVING AND INSTALLING/REPLACING LOWER OIL SUMP SECTION (N63) and 1113010 REMOVING AND INSTALLING/REPLACING UPPER OIL SUMP SECTION (N63)
- Remove OIL PUMP
- Removing PISTON
- Remove FLYWHEEL
- Remove radial shaft seals. See RADIAL SHAFT SEAL IN LOWER TIMING CASE COVER and CRANKSHAFT RADIAL SEAL ON TRANSMISSION SIDE
- Remove TIMING CHAINS
Installation note:
Layout of main bearing caps.
All numbers must be read from the cylinder bank (5 to 8) (see arrows).
Main bearing caps (1 to 5) opposite the output end on the timing chain drive.
Release oil pump spacer bolts (1) with special tool 13 5 020 .
Release main bearing taper screw connection (1).
Release oil pump spacer pins (2).
Release all threaded support sleeves (1).
Release collar bolts (M8) in sequence 10 to 1.
Release collar bolts (M11) in sequence 10 to 1.
Remove main bearing caps 1 to 5.
Lift out crankshaft and set down safely (secure against turning).
Release screw for oil nozzle (1).
Tightening torque: 11 11 8 AZ .
Installation note:
Check oil nozzle (1) for clear passage with compressed air.
Observe fastening on oil nozzle.
Installation note:
Observe fastening in crankcase.
Replace CRANKSHAFT MAIN BEARING SHELLS .
Installation note:
Observe arrangement of main bearing caps.
All numbers must be read from the cylinder bank (5 to 8) (see arrows).
Main bearing caps (1) is opposite the output end on the timing chain drive.
Turn back all threaded support sleeves hand-tight.
Installation note:
Coat all bearing positions with engine oil.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.