How to Disassemble the Fuel System and ECM Cooling Plate of Cummins M11 Series Engine

 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.  

 

 

 

 

③ Use 8 bolts (Part No. 3376434) to fix the connecting plate and the cylinder block together. The tightening torque is 47N, see Figure 2-45. ④ Remove the lifting lugs on the engine block, see Figure 2-46.

 

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⑤ Remove the fan hub bracket, see Figure 2-47. (2) Disassembly of fuel system components 

 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.

 

 

3—Cooling Officer 

 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.

  

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  (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.