Home

Timing Pulley?

Aug 20, 2007 by JsneedUSMC99 | Posted in Maintenance & Repairs

I have been trying for 4 days now to get a timing belt pulley wheel on the bottom of the engine off. There is a 18mm bolt on the pulley that is stubborn and wont come off. I have used a ratchet set with a 24 inch extender bar. I have used a Torque wrench,

Did you not think we'd like to know what kind of vehicle you're working on?

60 tooth timing pulley high res

60 tooth timing pulley high res

4th Axis Timing Pulley Test

using the 4th axis to make a 16 tooth timing pulley

New V-Engine Generation from Mercedes-Benz Feature 3rd Generation Gasoline Direct Injection and New Operating Modes for More Power and Torque and Lower Fuel Consumption

Both the new V6 and the new V8 from Mercedes-Benz have aluminium crankcases, pistons and cylinder heads. The crankshaft, connecting rods and valves are of special forged steel. The technology package in the new engine generation includes a number of new developments:

In combination with multi-spark ignition, a further developed, third-generation gasoline direct injection system with spray-guided combustion and piezo-electric injectors offers further possibilities for fuel savings—in the V8 by means of an improved, homogeneous combustion process, and in the V6 by a new, stratified combustion process with a considerably extended characteristic map and fuel-efficient lean-burn technology.

In conjunction with start/stop technology, shift point adjustment and specific friction-reducing measures, improvements in day-to-day fuel consumption by more than 20% are possible.

Power consumption by ancillary units has been reduced. These include an optimized water pump with 2 -generation thermal management, a demand-controlled oil pump, a volume-controlled high-pressure fuel pump and an intelligent generator management system.

Lightweight construction techniques and detailed improvements have also reduced in-engine friction considerably compared to the previous engine.

Direct injection system . The system pressure is up to 200 bar, the pressure being variably optimized according to the engine’s characteristic map. Completely newly developed piezo-electric injectors allow up to five injections per intake stroke for optimal mixture formation.

The piezo-electric injector has a response time of 0.1 milliseconds, allowing the fuel injection to be very sensitively and precisely adjusted to the current load and engine speed, with a beneficial effect on emissions, fuel consumption and combustion noise.

The multiple injections even in tiny quantities made possible with piezo-electric injection technology were used by Mercedes-Benz engineers to control a wider characteristic map with the efficient lean-burn process, and to provide the conditions for further functions.

Read more...