Normal driving is a prerequisite for the test drive roller test stand

Start the test drive (roller test stand).

Press the green key until the clear symbol appears on the function display.

Display:

The tester Is now active. If knocking occurs, this will be indicated by the tester, e.g.:

Display;

To restart knock detection, press the green key until the clear symbol appears again.

A knock display of > 5.0 (50) Indicates a fault.

Possible faults:

Defective bucket tappets Connecting rod damage Damage to the crankshaft drive

The function display will change to "r" after 10 000 ignition firings have elapsed.

Display:

Counting is now terminated.

The number of knocks is displayed in "per mil". 23 knocks have been counted in this example.

Knock detection must be carried out until the function display switches over from the clear symbol to the knock detection symbol.

This is always the case after 10 000 ignitions have taken place. All occurring knocks are added up and displayed as the end result.

Press the green and yellow keys simultaneously to leave knock detection mode, until the following display appears.

Display:

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