Manual Engine Mercedes Benz Om 444 La Jun 2026

| Symptom | Possible cause | |---------|----------------| | Hard start | Low rail pressure, glow plugs, crank sensor | | White smoke on idle | Injector leak, low compression, timing | | Black smoke | Boost leak, EGR stuck, air filter | | Engine knock | Bad injector, bearing wear | | Oil pressure low | Pump wear, wrong oil, relief valve stuck |

The Mercedes-Benz OM 444 LA engine has been widely used in various applications, including:

The is one of the most powerful V12 industrial diesel engines in the 400 series. It is a 4-stroke, water-cooled engine featuring direct injection, turbocharging, and intercooling (indicated by the "LA" designation). Key Technical Specifications manual engine mercedes benz om 444 la

But the trick is the firing order (1-12-5-8-3-10-6-7-2-11-4-9). The manual provides a "static adjustment chart" that allows you to adjust both valves for a cylinder simultaneously by rotating the crankshaft to TDC of that specific cylinder's compression stroke .

at 2100 rpm. Some industrial variants, such as those used in Liebherr cranes, may reach Maximum Torque: Approximately between 1000–1600 rpm. Dimensions & Weight: Bore x Stroke: 128 mm x 142 mm. Engine Weight (Dry): Approx. 1,216 kg (basic) to 1,250 kg (with fan/starter). Critical Bolt Torque Settings | Symptom | Possible cause | |---------|----------------| |

Maintaining a V12 of this scale requires precision. Official service manuals, such as those available through Agrimanuals or Scribd , detail critical procedures:

The manual specifies a cold valve lash of: The manual provides a "static adjustment chart" that

Official documentation for this engine is typically found in multi-unit workshop manuals covering the OM 441 through OM 444 series.

: Standard oil changes are typically recommended every 250 hours or 3 months.

For maintenance and overhaul, these primary torque values are essential: Barrington Diesel Club Cylinder Head Bolts: