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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSBMW2011335I 2D CONVERTIBLE, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCEENGINE CONTROL SYSTEMSENGINE - REPAIR - E93CYLINDER HEAD AND CYLINDER HEAD COVER11 12 100 REMOVING AND INSTALLING CYLINDER HEAD (N55)
2011 BMW 335i 2D Convertible, Automatic
11 12 100 Removing and installing cylinder head (N55)
2011 BMW 335i 2D Convertible, AutomaticSECTION 11 12 100 Removing and installing cylinder head (N55)
Special tools required:
IMPORTANT:
Fit new cylinder head bolts.
Do not wash off bolt coating.
Lightly oil washer on the contact surfaces (both sides).
There must be no coolant, water or engine oil in the blind holes.
Risk of cracking and corrosion!
Do not wash off bolt coating.
Lightly oil washer on the contact surfaces (both sides).
There must be no coolant, water or engine oil in the blind holes.
Risk of cracking and corrosion!
Necessary preliminary tasks
- Remove EXHAUST SYSTEM .
- Drain COOLANT .
- Drain ENGINE OIL .
- Remove ENGINE .
- Mount engine on ASSEMBLY STAND .
- Remove intake PLENUM .
- Remove EXHAUST TURBOCHARGER with integrated exhaust manifold.
- Detach coolant hoses from cylinder head.
- Remove INTAKE AND EXHAUST CAMSHAFT ADJUSTERS .
IMPORTANT:
If the timing chain is stowed in the gear case, the crankshaft must no longer be rotated.
Release screws (1).
Unclip timing chain module (2) at separation point (3) and remove towards top.
Set down timing chain.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.