View from Front Side Hydraulic Lash Adjuster

Oil Pump Rotors

View from Back Side

Oil Pump Chamber

• The hydraulic lash adjuster, which is located at the fulcrum of the roller rocker arm, consists primarily of a plunger, plunger spring, check ball, and check ball spring.

• The engine oil that is supplied by the cylinder head and the built-in spring actuates the hydraulic lash adjuster. The oil pressure and the spring force that act on the plunger push the roller rocker arm against the cam, in order to adjust the valve clearance that is created during the opening and closing of the valve. As a result, engine noise is reduced.

Plunger

Passage

Check Ball

Check Ball Spring

Plunger Spring

Plunger

Passage

Check Ball

Check Ball Spring

Plunger Spring

Lash Adjuster Toyota

285eg22

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