How to disassemble the injector and rocker arm housing of a Cummins M11 series engine

① Remove the injector fixing screws and clamps, and use an injector puller (part number 3823579) to remove the injectors from the engine. Mark the cylinder number on each injector, as shown in Figure 2-80.

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 Figure 2-80 shows the fuel injectors being removed using a puller and their cylinder numbers being marked.

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 ② Remove the rocker arm chamber housing and other parts, see Figure 2-81.