c) To check a suspension cylinder, stop its feed pipe by means of a plug and check as bed above. Note the pressure drop on the gauge. The leakage from the cylinder is calculated by taking the difference between the total leakage (noted in paragraph 13 b) when the whole front suspension is under pressure and the leakage of the cylinder alone. It must not bring about a pressure drop exceeding 10 bars ( 150 psi) within three minutes, If it does, the cylinder is faulty.