Leak test

If the valve is attached to the tool, remove it . Use the fork-shaped tool (4080 1114 00) and turn it clockwise.

Insert the valve in the connector (1) of the test tool and tighten it to 0.7 Nm. See the figure below.

Connect an air hose to the connector (2).

Press the tool lever two to three times to supply the air pressure of 6.3 bar (90 psi).

Measure the leakage with a leakage meter. Air leakage during 10 seconds must be less than 0.3 l/min.

If the result of the test is unsatisfactory, replace the valve. If the test shows no fault, continue the procedure.

Install the valve in the original position and tighten it with the fork-shaped tool to 0.7 Nm.