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.
Oil pump
The engine S63 TOP has a volume flow rate controlled oil pump with pressure stage and compression stage in the same housing. The oil pump is securely screwed onto the upper part of the oil sump.
The oil pump is driven via the sleeve type chain from the crankshaft. The sleeve type chain is kept under tension by a tensioning rail.
A pump is used as a vacuum stage, which delivers the engine oil from the front oil sump area to the rear oil sump area with an additional intake pipe.
The volume flow controlled pendulum slide cell pump is used to supply the engine with oil pressure. The intake snorkel is positioned in the rear area of the oil sump to ensure safe oil supply.
The graphic below shows the oil sump components and their drives.
| Index | Explanation |
|---|---|
| 1 | Return line |
| 2 | O-ring |
| 3 | Drive chain for oil pump |
| 4 | Oil pump output |
| 5 | Pendulum slide cell pump |
| 6 | Oil pump camshaft sprocket |
| 7 | Chain tensioner |
| 8 | Intake pipe for compression stage |
| 9 | Intake pipe for intake stage |
NO RELATED
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.