CUMMIN Rocker Arm



MODEL: HITACHI, KOMATSU, SUMITOMO, KOBELCO, VOLVO, DOOSAN, CATERPILLAR, HYUNDAI ISUZU: 4BD1T, 4BG1T, 6BD1T, 6RB1T, 6SD1T, 6BG1T, 6WG1T,6HK1T, 4HK1T, 4JJ1T HINO: H06CT, EP100T, J05E, J08E MITSUBISHI:: 6D22T, 6D31T, 6D15T, 4D31T, 6D14T,6D22T KOMATSU: S6D95, S6D108 CUMMIN: 6BT, 6CT, S6D102, S6D105, S6D107E, S6D114, S6D125 DOOSAN: D1146, D2366, DB58 VOLVO: D8K, D4D, D4E, D12D, D5E, D6E >>Whatsapp us 011-11623216 to confirm the model and size. FREE catalogue on our website:

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if a rocker arm develops a problem, it can lead to several issues that affect the performance, efficiency, and reliability of the engine. Rocker arms are critical components in the valvetrain of an engine, responsible for transmitting the motion from the camshaft to the valves. Here are some potential problems that can arise from issues with rocker arms:

Valve Train Noise: One of the most common symptoms of rocker arm problems is excessive valve train noise. If a rocker arm becomes worn, damaged, or improperly adjusted, it may produce tapping, clicking, or rattling noises as it moves against the valve stem or pushrod. Excessive valve train noise can indicate wear or misalignment of the rocker arm and may lead to further damage if not addressed promptly.

Valve Train Wear: Rocker arm problems can lead to accelerated wear of the valve train components. If a rocker arm is worn, damaged, or improperly adjusted, it may not provide proper support and motion to the valves, leading to increased friction and wear on the valve stems, valve guides, pushrods, and camshaft lobes. Excessive wear can cause premature failure of these components and may require costly repairs or replacements.

Valve Train Misalignment: Improperly adjusted or damaged rocker arms can cause misalignment of the valve train components. Misaligned rocker arms may not apply the correct amount of force to the valves, leading to uneven wear and operation of the valves. Valve train misalignment can result in poor engine performance, decreased fuel efficiency, and increased emissions.

Valve Timing Issues: Rocker arm problems can also lead to valve timing issues. The rocker arms play a crucial role in opening and closing the engine's valves at the correct times to facilitate intake and exhaust processes. If a rocker arm is worn, damaged, or improperly adjusted, it may not actuate the valves correctly, leading to timing inaccuracies. Valve timing issues can result in engine misfires, loss of power, and poor fuel economy.

Engine Noise and Performance: Rocker arm problems can affect engine noise levels and performance. Excessive valve train noise due to worn or damaged rocker arms can detract from the driving experience and indicate underlying issues with the engine. Additionally, if rocker arm problems lead to valve timing issues or misalignment, it can result in poor engine performance, reduced power output, and rough idling.

Risk of Engine Damage: Ultimately, rocker arm problems can lead to severe engine damage if left unaddressed. Worn or damaged rocker arms can cause valve train components to fail prematurely, leading to catastrophic engine failure. Valve train components that fail due to rocker arm problems can cause bent valves, damaged pistons, or interference between moving parts, resulting in costly repairs or engine replacement.

In summary, rocker arm problems can lead to excessive valve train noise, accelerated wear of valve train components, valve train misalignment, valve timing issues, engine noise and performance issues, and the risk of engine damage. Prompt detection and repair or replacement of worn, damaged, or improperly adjusted rocker arms are essential to ensure the reliable and efficient operation of the engine. Regular inspection and maintenance of the valvetrain can help prevent issues and prolong the life of the engine. 


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