Fault Phenomenon: Oil&Steel 4018 scissor lift aerial work platform when the exhaust brake is closed, there is still a sound of air leakage, power drops.

Troubleshooting Process:
– Checked valve seal: seal gasket damaged.
– Checked valve plate: valve plate deformed.
– Checked shaft: shaft worn.
– Checked air pressure: pressure too high.

Root Cause: The exhaust brake valve seal gasket is damaged, causing air leakage.

Required Parts: Exhaust brake valve repair kit.