Lifter / Lash Adjuster: Testing and Inspection

Hydraulic Adjusting Elements, Checking

Special tools, testers and auxiliary items required

• Adapter (T40257) for vehicles with an automatic transmission

• Socket (T40263) for vehicles with an automatic transmission

• Feeler gauge

• The hydraulic adjusting elements cannot be repaired.

• Irregular valve noises are normal while starting the engine.

Procedure

- Start the engine and let it run until the coolant fan switches on once.

- Increase engine speed for about 2 minutes to approximately 2500 RPM, perform road test if necessary.

• If irregular valve noises disappear but return during short drives, oil check valve must be replaced. Oil check valve location, refer to => [ Oil Check Valve and Spray Nozzle Valve Overview ] Oil Check Valve and Spray Nozzle Valve Overview.

- If the hydraulic adjusting elements are still loud, determine which one is faulty as follows:

- Remove the cylinder head cover. Refer to => [ Left Cylinder Head Cover ] Left Cylinder Head Cover, => [ Right Cylinder Head Cover ] Right Cylinder Head Cover.

- Rotate the crankshaft until the lobes on the adjusting element to be checked face upward:

Vehicles with a Manual Transmission:

- Move the vehicle forward with 4th gear engaged and the ignition switched off.

Vehicles with Automatic Transmission:






- Attach the (T40257) to the (T40263).

- Attach the adapter to the bolts on the vibration damper.

• The notch - arrow A - on the (T40257) must face the color dash - arrow B - on the vibration damper.

• Ignore the semi-round countersink on the (T40257).

All Vehicles:






- To determine the play between cam lobes and roller rocker lever, press the lever down - arrow -.

- If a 0.20 mm feeler gauge can slide between the cam lobes and the roller rocker lever, replace the hydraulic adjusting element. Refer to => [ Camshafts ] Service and Repair.

Final Procedures

- Install the cylinder head cover. Refer to => [ Left Cylinder Head Cover ] Left Cylinder Head Cover, => [ Right Cylinder Head Cover ] Right Cylinder Head Cover.