Description

INGCO S-DE-RAS-186F Rocker Arm Assy

The INGCO S-DE-RAS-186F Rocker Arm Assembly is a crucial component in an internal combustion engine’s valvetrain system. Let’s delve into what a rocker arm is and its significance:

1. Rocker Arm Overview:
   • A rocker arm serves as a link between the camshaft and the engine valve.
   • It converts the rotational motion of the camshaft into linear motion, allowing the valve to open and close at the right time.
   • The camshaft’s lobes push against the rocker arm, causing it to pivot on a fulcrum
2. Function and Operation:
   • In a typical overhead valve (pushrod) engine:
     • The camshaft pushes the pushrod upwards.
     • The top of the pushrod presses on one side of the rocker arm (located at the top of the engine).
     • This rotation causes the other end of the rocker arm to press downwards on the valve, opening it by moving it downwards.
   • Some rocker arms include a bearing (roller rockers) at the contact point to reduce wear and friction.
   • Roller rockers can also be used in overhead cam engines, with the roller at the point where the cam lobe contacts the rocker
3. Signs of a Bad Rocker Arm:
   • Clicking or Ticking Noises: If you hear these noises when starting the engine, a worn rocker arm might be the issue.
     1. • Misfires or Stalling: A malfunctioning rocker arm affects valve timing, leading to performance issues.
        • Check Engine Light: Reduced engine performance can trigger the check engine light.
        • Visual Inspection: Excessive wear, cracks, or bending in the rocker arm indicate problems.
     2. Diagnosis and Verification:
        • To confirm a broken or worn rocker arm, remove the valve covers and inspect the components.
        • Look for excessive play or metal underneath the rocker arm.

Remember that addressing rocker arm issues promptly is essential to prevent further engine damage.

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