Corghi A 222 Manuel D'utilisation page 106

Bead breaker cylinder lacks force, fails to break beads and leaks air
Silencer plugged.
➥ Replace the silencer.
Cylinder gaskets worn.
➥ Replace the gaskets.
➥ Replace the bead breaker cylinder.
Bead breaker cylinder leaks air around the rod
Air gaskets worn.
➥ Replace the gaskets.
➥ Replace the bead breaker cylinder.
Turntable will not rotate in either direction
Inverter faulty.
➥ Replace the inverter.
Belt broken.
➥ Replace the belt.
Gear unit clamped.
➥ Replace the gear unit.
Gear unit noisy. The turntable makes 1/3 of a spin and then stops
Gear unit seizing.
➥ Replace the gear unit.
Turntable fails to clamp rims
Turntable does not clamp rim.
➥ Replace the turntable cylinder.
Clamp grippers are worn.
➥ Replace the clamp grippers.
Turntable mounts or demounts wheels with difficulty
Insufficient belt tension.
➥ Adjust belt tension (fig.36) or replace it.
Vertical head does not raise or does it too far from rim
Clamping plate not adjusted.
➥ Adjust the plate.
106 Operator's manual A 222