How to drain relevant oils and fluids before removing the engine of a Scania Truck 4 Series

                WARNING！ 

Beware of hot oil after driving. Wear protective gloves and goggles.

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1   Drain the engine oil.

2   Remove the oil filter. Also drain the oil  from the centrifugal oil cleaner reservoir.

3   Remove the fuel filter element. Use suction on the filter housing if necessary.

 

Note: The fuel system may be pressurised.

Release the pressure before dismantling.

 

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4   Drain the oil from the compressor by

unscrewing the blanking pieces.

  

5   Drain the oil from the turbocompound unit

by undoing the oil pipe connection.

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How to disassemble the Cummins M11 series engine exhaust manifold and intake manifold

                               www. heavydutydiag.com

 

① The exhaust manifold assembly consists of three sections. To disassemble, remove one bolt from the end of each section, then install two guide pins (part number 3376488). Remove the remaining bolts, then remove the exhaust manifold itself. See Figure 2-25. 

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 ② Remove the intake manifold pressure sensor and temperature sensor wiring connectors from the intake manifold. See Figure 2-26.

 

  ③ Remove the intake manifold connector and gasket from the top of the intake manifold. Remove two mounting bolts, install two guide pins (part number 3376488), remove the remaining bolts, and use four M10x25 bolts to install the lift bracket onto the rocker arm housing. Tighten to a torque of 47 N·m. See Figure 2-27.

 

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How to disassemble the Cummins M11 series engine turbocharger and oil return pipe

                       https://www.heavydutydiag.com/

 

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 Removal of the Turbocharger and Oil Return Pipe of the Cummins M11 Series Engine 4. Removal of the Turbocharger and Oil Return Pipe 

 

 

 

  ① Remove the oil supply pipe and gasket from the top of the turbocharger. Remove the other end of the oil supply pipe from the oil filter housing. Then remove the oil return pipe and gasket from the bottom of the turbocharger. See Figure 2-22. 

② Remove the V-clamp, exhaust elbow, and O-ring from the turbocharger compressor exhaust port. Remove the four mounting nuts. Remove the turbocharger and gasket. Block the turbocharger's oil supply and return ports. See Figure 2-23.

 

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③ Remove the turbocharger oil return pipe connector. See Figure 2-24.