Mercedes Benz M272 Engine Parts Diagram Online

Components:

Diagram Insight: The water pump’s gasket is often listed as a separate part in the diagram. Do not overlook it when ordering. Mercedes Benz M272 Engine Parts Diagram

Diagram Insight: Look closely at the camshaft adjuster representation in your diagram. If the sprocket teeth appear as a single solid piece with the star wheel, it is the later (revised) version. If the sprocket appears as two separate pieces riveted together, it is the defective early version (engine serial # prior to 2729..30 088933). Components:

This is the most infamous area of the M272. The diagram shows a duplex timing chain running from the crankshaft sprocket up to the camshaft adjusters. However, lurking behind the chain is the balance shaft (part # 272 030 01 05). Diagram Insight: The water pump’s gasket is often

Key parts:

Diagram Insight: The parts diagram will show the balance shaft as an assembly with two eccentric weights. The problematic sprocket is directly behind the timing chain. When ordering parts, later diagrams show a revised shaft with a hardened sprocket (part # 272 030 11 05).

The most striking visual difference between the M112 and the M272 is the cylinder head design. While the M112 used three valves per cylinder (two intake, one exhaust), the M272 went back to a 4-valve per cylinder setup (Double Overhead Camshaft, or DOHC).