Cummings INLINE 6 Diagnostic Adapter for Heavy Duty Truck High Quality
(1) Install the engine on the test bench
① Using an engine overhaul test bench (part number 3375194) and a connecting plate (part number 3376432), install the connecting plate onto the test bench using five bolts with part number 5/8-11x2in. Tighten to a torque of 180 N·m, see Figure 2-43.
② Install two guide pins (part number 3376488) at bolt holes 1 and 2 on the water channel cover. Use a lifting device to install the engine onto the connecting plate on the test bench, see Figure 2-44.
Figure 2-43 shows the connection plate being installed onto the overhaul stand using 5 bolts.
Figure 2-44 shows the engine being mounted onto the connecting plate. 1, 2—bolt holes.
③
Secure the connecting plate to the cylinder block using 8 bolts (part
number 3376434), tightening to a torque of 47 N·m, see Figure 2-45.
④ Remove the lifting lugs from the engine cylinder block, see Figure 2-46.
Figure 2-45 shows the connecting plate being secured to the cylinder block with bolts.
3—Connecting plate
4, 5, 6—Bolt holes
7, 8—Hole
Remove the fan hub bracket, see Figure 2-47.
(2) Fuel system component disassembly
①Remove the fuel supply hose and fuel filter housing, see Figure 2-48.
Figure 2-47 Remove the fan hub bracket
Figure 2-48 Removing the fuel hose and filter housing 1, 2—Hose connectors
② Remove the fuel supply pipe and return pipe from the cylinder head, and remove the fuel gear pump cooling pipe, as shown in Figure 2-49.
③ Remove the actuator wiring harness from the fuel pump fuel cut-off valve and label the wires for easy identification, as shown in Figure 2-50.
Figure 2-49 Removal of fuel supply pipe, return pipe, and gear pump cooling pipe
1 - Supply pipe
2 - Return pipe
3 - Cooling pipe
Figure 2-50 Remove the fuel shut-off valve actuator harness and label it.
④ Remove the four mounting bolts connected to the fuel pump, the fuel pump, the gasket, and the star coupling, as shown in Figure 2-51.
5 Remove the access cover and gasket on the fuel pump side, as shown in Figure 2-52.
Figure 2-51 shows the removal of the fuel pump, gasket, and coupling.
Figure 2-52 shows the removal of the access cover and gasket on the fuel pump side.
(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 wiring harness clamps from positions 1 and 2 on the ECM bracket, loosen the AMP connector mounting bolts on the sensor wiring harness, and remove the actuator wiring harness and sensor wiring harness from the ECM, see Figure 2-54.
③ Remove the ECM mounting bolts, star washers, and the ECM, see Figure 2-55.
④ Remove the four fixing bolts, the ECM cooling plate, and the mounting bracket, see Figure 2-56.
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