Automobile Engineering in ME
The damper fluid leakage typically occur from

Bottom of damper
Coil spring mounting
Upper damper mounting
Clearance between inner and outer tubes of damper

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Automobile Engineering in ME
The purpose of a balancer shaft is to

Increase inertia force of the rotating crankshaft
Reduce vibrations caused by the crankshaft rotation
Balance the timing in the movement of the two groups of pistons
Adjusts the timing of the intake and exhaust valve openings

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