Renault Magnum engine. Manual — part 102

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Check the clearance between the valve yoke and the exhaust rocker arm piston. Turn the piston to ensure that it is properly seated in its housing.

Use a feeler gauge corresponding to the recommended clearance.

See pages .

In the event of rocker arm play or sticking, make the check with a thicker or thinner feeler gauge in order to determine the thickness of the new adjusting

shim.

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In the event of incorrect clearances.

Remove bolt.

Remove adjusting shim .

Hold the caliper in place when unbolting.

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Note down the thickness

X engraved on adjusting shim.

Determine the thickness of the new adjustment shim, in order to obtain the recommended clearance.

See pages .

You can superimpose a maximum of 2 adjusting shims, provided that they have the same thickness. Adjusting shims are available with thicknesses of

0.05 by0.05 mm.

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Fit shim.

Fit bolt.

Tighten to torque.

See pages .

Hold the caliper in place when tightening.

Again check the clearance between the valve yoke and the arm piston.

Make a mark on the rocker arm when adjustment is finished.

Perform the same operation on all the other cylinders.