This article mainly introduces how to disassemble the Cummins M11 series engine fuel system and ECM cooling plate

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(1) Install the engine on the bench 

 ①Use the engine overhaul bench (Part No. 3375194) and the connecting plate (Part No. 3376432), and install the connecting disk to the overhaul bench with 5 bolts with a part number of 5/8-11 ?in. The tightening torque is 180N. , see Figure 2-43. 

 ② Install two guide pins (part number 3376488) at the screw holes 1 and 2 of the water channel cover, and use a lifting device to install the engine on the connecting plate of the bench, see Figure 2-44.  

 

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 ① Remove the fuel supply hose and fuel filter seat, see Figure 2-48.

② Remove the fuel supply pipe and return pipe from the cylinder head, and remove the fuel gear pump cooling pipe, see Figure 2-49. 

 ③ Remove the actuator wiring harness from the fuel pump fuel cut-off valve and label the wires for easy identification, see Figure 2-50.

 ④ Remove the 4 mounting bolts, fuel pump, sealing gasket and star coupling connected to the fuel pump, see Figure 2-51. 

 ⑤ Remove the inspection hole cover and sealing gasket on the fuel pump side, see Figure 2-52.

  (3) Removal of ECM and ECM cooling plate  

① If an atmospheric pressure sensor is installed on the engine, remove the atmospheric pressure sensor and connecting wires from the front bracket of the ECM, see Figure 2-53. 

 ② Remove the wire harness clamps from positions 1 and 2 on the ECM bracket, loosen the AMP connector mounting bolts on the sensor wire harness, and remove the actuator wire harness and sensor wire harness from the ECM, see Figure 2-54. 

 ③ Remove the ECM mounting bolts, star washer and ECM, see Figure 2-55. 

 ④ Remove the 4 fixing bolts, ECM cooling plate and mounting bracket, see Figure 2-56.